The document discusses composite materials for use in machine tool beds to reduce vibrations during machining operations. It presents an experimental study comparing the vibration response of machining two composite materials - glass fibre epoxy and glass fibre polyester. The results show that with an optimum number of composite layers, vibrations can be decreased significantly. However, more than the optimum number of layers causes an abrupt increase in vibrations. Effective damping is achieved when the composites are properly fixed to the bed and workpiece to avoid additional slip vibrations. Damping ability is higher when the matrix phase density is lower for the same fibre phase.
Axial Crushing of Aluminum Honey Comb Under Dynamic Loading ConditionIRJET Journal
The document summarizes research on the axial crushing of aluminum honeycomb structures under dynamic loading conditions. Experiments were conducted using both semi-static and dynamic testing methods. Specifically, honeycomb samples measuring 75x75x35mm were tested in a universal testing machine and a drop weight machine. The testing aimed to study the deformation and energy absorption of honeycomb under compressive loads. Finite element analysis was also conducted using LS-Dyna software to simulate honeycomb crushing. The results provide valuable insights into manufacturing materials with high energy absorption capacity.
Experimental investigation of fiberglass reinforced mono composite leaf springIAEME Publication
The document discusses experimental investigation of fiberglass reinforced mono-composite leaf springs. Two composite leaf spring samples were fabricated - one with 60% epoxy and 40% fiberglass, and another with 50% of each. Physical tests were performed on the samples and compared to steel leaf springs. Tensile, flexural, dynamic mechanical and heat deflection tests were conducted. The tensile test results showed the 50% composite sample had higher tensile stress and strain values than the 60% sample. In general, the study aims to compare composite and steel leaf springs under different testing conditions.
Dry sliding studies of porosity on sintered cu based brake materialsIAEME Publication
This document summarizes a study on the effect of sintering temperature and porosity on the dry sliding wear behavior of copper-based brake materials. Samples were sintered at temperatures of 850, 900, and 950°C and tested. Scanning electron microscopy revealed that the highest sintering temperature of 950°C resulted in the lowest porosity of 14.04% and lowest wear rate, with a smooth surface formed by iron particles. Higher porosity samples exhibited higher wear rates, with abrasive scratches and delamination flakes observed. The optimal porosity and wear resistance was obtained at 950°C.
Effect of cold swaging on the mechanical and microstructure characteristics o...eSAT Journals
Abstract In this experimental investigation, the post sintering mechanical treatment was implemented by cold swaging the produced tungsten alloy rods with composition (90W-7Ni-3Fe %wt) by cold isostatic press with 300 MPa, and appling different reductions of cross sectional area varying from 10% up to 50%. On the mechanical and microstructure properties of the tungsten heavy alloy (89.97W-7Ni-3Fe-0.03 Y2O3 %wt). Elemental powders were mixed for 120 min. Green compacted by cold isostatic press with 300 MPa, and Finally the specimens were sintered at 1480ºC for 90 min under vacuum atmosphere. It was found that the ultimate tensile strength and hardness were remarkably increased by about 39% and 45% respectively, by the application of 50% area reduction by swaging, relative to the sintered specimens. On the other hand, ductility and impact resistance were deeply decreased by about 75% and 53% respectively, by also, the application of 50% area reduction by swaging. Keywords: Cold Swaging, Liquid Phase Sintering, Tungsten Heavy Alloy, Powder Metallurgy.
The document describes a study that fabricated Al-10% Al2O3-10% ZrO2 nanocomposite powders using high-energy ball milling. The powders were milled for various time periods up to 45 hours. Characterization of the milled powders found that milling resulted in a uniform distribution of the Al2O3 and ZrO2 reinforcements in the Al matrix. X-ray diffraction analysis showed increased peak broadening with longer milling times, indicating reduced crystallite size and increased lattice strain. Crystallite size measurements found sizes decreased to around 25 nm after 45 hours of milling. Scanning electron microscopy images confirmed the uniform distribution of reinforcements and decreasing particle size
EXPERIMENTAL INVESTIGATION AND MATERIAL CHARACTERIZATION OF A356 BASED COMPO...sathish sak
Recently friction stir processing (FSP) has emerged as an effective tool for enhancing sheet metal properties through microstructure modification. Significant grain refinement and homogenization can be achieved in a single FSP pass leading to improved formability, especially at elevated temperatures.
FSP is a solid-state process where the material within the processed zone undergoes intense plastic deformation resulting in dynamically recrystallized grain structure.
Most of the research conducted on FSP focuses on aluminum alloys. Despite the potential weight reduction that can be achieved using Titanium dioxide(B4C) alloys.
In this work, we examine the possibility of using FSP to modify the microstructure and properties of commercial A356-B4C alloy particles. The effect of various process parameters on thermal histories, resulting microstructure and properties to be investigated.
Investigation into the effects of process parameters on delamination 2IAEME Publication
This document summarizes a study that investigated the effects of drilling process parameters on delamination in drilling bidirectional carbon fiber reinforced polymer (BD-CFRP) composite laminate. The study used Taguchi design of experiments to evaluate the effects of spindle speed, feed rate, drill diameter, and point angle on delamination factor. Response surface methodology and analysis of variance were used to analyze the results. The study found that drill diameter and spindle speed were the main parameters that influenced delamination, while feed rate and point angle were less sensitive factors for delamination when drilling BD-CFRP composites with high speed steel drills. Experimental results agreed well with predicted results from the mathematical model.
Experimental and fea analysis of composite leaf spring by varying thicknesseSAT Journals
Abstract
The work is carried out on composite leaf spring of a commercial vehicle. The objective of this work is to carryout design and analysis of composite leaf spring with experimental design consideration and loading condition. The material of leaf spring is E-GFRC (Glass Fiber reinforced composite). The GFRC leaf springs are manufactured by hand lay-up method which were evaluated and study. The model of composite leaf spring is prepared and analyzed using ANSYS14.5 for the deflection and stresses under defined loading condition. The experimental and FEA result compared for validation. The dimension of conventional leaf spring is taken with varying thickness for evaluation of result and Static analysis is performed
Keywords: E-glass/epoxy composite, ANSYS14.5, Static Analysis.
Axial Crushing of Aluminum Honey Comb Under Dynamic Loading ConditionIRJET Journal
The document summarizes research on the axial crushing of aluminum honeycomb structures under dynamic loading conditions. Experiments were conducted using both semi-static and dynamic testing methods. Specifically, honeycomb samples measuring 75x75x35mm were tested in a universal testing machine and a drop weight machine. The testing aimed to study the deformation and energy absorption of honeycomb under compressive loads. Finite element analysis was also conducted using LS-Dyna software to simulate honeycomb crushing. The results provide valuable insights into manufacturing materials with high energy absorption capacity.
Experimental investigation of fiberglass reinforced mono composite leaf springIAEME Publication
The document discusses experimental investigation of fiberglass reinforced mono-composite leaf springs. Two composite leaf spring samples were fabricated - one with 60% epoxy and 40% fiberglass, and another with 50% of each. Physical tests were performed on the samples and compared to steel leaf springs. Tensile, flexural, dynamic mechanical and heat deflection tests were conducted. The tensile test results showed the 50% composite sample had higher tensile stress and strain values than the 60% sample. In general, the study aims to compare composite and steel leaf springs under different testing conditions.
Dry sliding studies of porosity on sintered cu based brake materialsIAEME Publication
This document summarizes a study on the effect of sintering temperature and porosity on the dry sliding wear behavior of copper-based brake materials. Samples were sintered at temperatures of 850, 900, and 950°C and tested. Scanning electron microscopy revealed that the highest sintering temperature of 950°C resulted in the lowest porosity of 14.04% and lowest wear rate, with a smooth surface formed by iron particles. Higher porosity samples exhibited higher wear rates, with abrasive scratches and delamination flakes observed. The optimal porosity and wear resistance was obtained at 950°C.
Effect of cold swaging on the mechanical and microstructure characteristics o...eSAT Journals
Abstract In this experimental investigation, the post sintering mechanical treatment was implemented by cold swaging the produced tungsten alloy rods with composition (90W-7Ni-3Fe %wt) by cold isostatic press with 300 MPa, and appling different reductions of cross sectional area varying from 10% up to 50%. On the mechanical and microstructure properties of the tungsten heavy alloy (89.97W-7Ni-3Fe-0.03 Y2O3 %wt). Elemental powders were mixed for 120 min. Green compacted by cold isostatic press with 300 MPa, and Finally the specimens were sintered at 1480ºC for 90 min under vacuum atmosphere. It was found that the ultimate tensile strength and hardness were remarkably increased by about 39% and 45% respectively, by the application of 50% area reduction by swaging, relative to the sintered specimens. On the other hand, ductility and impact resistance were deeply decreased by about 75% and 53% respectively, by also, the application of 50% area reduction by swaging. Keywords: Cold Swaging, Liquid Phase Sintering, Tungsten Heavy Alloy, Powder Metallurgy.
The document describes a study that fabricated Al-10% Al2O3-10% ZrO2 nanocomposite powders using high-energy ball milling. The powders were milled for various time periods up to 45 hours. Characterization of the milled powders found that milling resulted in a uniform distribution of the Al2O3 and ZrO2 reinforcements in the Al matrix. X-ray diffraction analysis showed increased peak broadening with longer milling times, indicating reduced crystallite size and increased lattice strain. Crystallite size measurements found sizes decreased to around 25 nm after 45 hours of milling. Scanning electron microscopy images confirmed the uniform distribution of reinforcements and decreasing particle size
EXPERIMENTAL INVESTIGATION AND MATERIAL CHARACTERIZATION OF A356 BASED COMPO...sathish sak
Recently friction stir processing (FSP) has emerged as an effective tool for enhancing sheet metal properties through microstructure modification. Significant grain refinement and homogenization can be achieved in a single FSP pass leading to improved formability, especially at elevated temperatures.
FSP is a solid-state process where the material within the processed zone undergoes intense plastic deformation resulting in dynamically recrystallized grain structure.
Most of the research conducted on FSP focuses on aluminum alloys. Despite the potential weight reduction that can be achieved using Titanium dioxide(B4C) alloys.
In this work, we examine the possibility of using FSP to modify the microstructure and properties of commercial A356-B4C alloy particles. The effect of various process parameters on thermal histories, resulting microstructure and properties to be investigated.
Investigation into the effects of process parameters on delamination 2IAEME Publication
This document summarizes a study that investigated the effects of drilling process parameters on delamination in drilling bidirectional carbon fiber reinforced polymer (BD-CFRP) composite laminate. The study used Taguchi design of experiments to evaluate the effects of spindle speed, feed rate, drill diameter, and point angle on delamination factor. Response surface methodology and analysis of variance were used to analyze the results. The study found that drill diameter and spindle speed were the main parameters that influenced delamination, while feed rate and point angle were less sensitive factors for delamination when drilling BD-CFRP composites with high speed steel drills. Experimental results agreed well with predicted results from the mathematical model.
Experimental and fea analysis of composite leaf spring by varying thicknesseSAT Journals
Abstract
The work is carried out on composite leaf spring of a commercial vehicle. The objective of this work is to carryout design and analysis of composite leaf spring with experimental design consideration and loading condition. The material of leaf spring is E-GFRC (Glass Fiber reinforced composite). The GFRC leaf springs are manufactured by hand lay-up method which were evaluated and study. The model of composite leaf spring is prepared and analyzed using ANSYS14.5 for the deflection and stresses under defined loading condition. The experimental and FEA result compared for validation. The dimension of conventional leaf spring is taken with varying thickness for evaluation of result and Static analysis is performed
Keywords: E-glass/epoxy composite, ANSYS14.5, Static Analysis.
The document summarizes research on the design and fabrication of hybrid composite springs. Five different types of springs were created using epoxy, glass fiber, and silk at varying volume fractions. Mechanical tests were conducted to evaluate the springs' performance. Literature on composite leaf springs, natural fiber composites, and fatigue testing of helical springs is also reviewed. The research aims to reduce vehicle weight through replacing traditional steel springs with lighter composite alternatives.
IRJET- Review on Tribological Modeling of Worm GearIRJET Journal
This document reviews various tribological modeling techniques for analyzing wear in worm gears. It discusses Archard's wear model, which is commonly used to predict wear by calculating the wear of each point on the wheel tooth surface over multiple wear steps while modifying the geometry. Finite element analysis can be used to simulate similar conditions and validated experimentally using tribometers. The document also summarizes several research papers on topics like stochastic wear modeling, modeling lubrication and contact conditions in worm gears, determining allowable wear limits, and developing models to calculate locally varying friction coefficients and analyze the effect of surface asperities on wear.
Partially Lateritised Khondalite (PLK) rocks are the bauxite mining waste materials
generated during mining and dumped at the mining site, create environmental pollution. These waste
rocks can be utilized as filler materials for different industrial applications after grinding to suitable
mesh size. Thermal shock treatment on ore is used for grain boundary breakage and size reduction,
due to thermal shock treatment the surface adsorbed gangue minerals also releases and expose new
surface area in the ore. Comminution study is used after this treatment for further reduction in size.
In comminution study, ball mill has good selective grinding performance. This paper deals with the
effect of thermal shock treatment on grinding characteristics of PLK rock and the overall energy
savings achieved. Alumina based filler/ceramic materials were used in different industries. Thermal
shock of the samples was evaluated using water quench test. Surface deterioration level of samples
was monitored by image analysis before and after quenching. A total energy saving of the order of
52.8 % could be achieved when a sample preheated at 1123 K for 60 minutes followed by coldwater
quenching and grinding.
This document summarizes research on 3D printing hollow compounds of different shapes. It discusses how 3D printing allows for more optimized geometries compared to traditional manufacturing and can produce hollow turbine blades, gears, and disc brakes with properties similar to solid compounds. Finite element analysis was performed on hollow and solid shapes of different cross-sections, finding equivalent stresses were approximately the same. 3D printing reduces material costs and makes manufacturing hollow compounds easier compared to traditional methods. The document concludes 3D printing technologies provide design flexibility while creating parts with layer-by-layer printing instead of traditional manufacturing approaches.
This research was a part of my Dual Degree Thesis and presented at The Minerals Metals and Materials Society Annual Meeting and Conference held at Seattle, WA in 2010.
The document discusses the design of a forging die for a planetary gear blank. It begins with an introduction to forging as a metalworking process and advantages it provides over other manufacturing methods. It then outlines the objectives and methodology for the die design project. The methodology involves designing the final gear part geometry, determining stock size requirements, and designing the forging die. Key die design considerations discussed include parting line selection, drafting angles, fillet and corner radii, flash and gutter design, and shrinkage allowance. The document concludes with CAD drawings of the designed forging die.
ANALYSIS AND SIZE OPTIMIZATION OF COMPOSITE LEAF SPRING USING FEAAmit Kotadiya
This document analyzes and compares steel and composite leaf springs using finite element analysis. It describes modeling a steel leaf spring and performing static analysis in ANSYS to calculate stress and deflection. The results are compared to analytical calculations, with a 5-10% difference. A composite multi-leaf spring is then modeled using carbon/epoxy laminates. Static analysis shows the composite leaf spring has an 80% reduced weight compared to steel, with improved load capacity and stiffness. Size optimization of a composite mono-leaf spring further reduces weight by 88.57% and thickness by 1mm.
EXPERIMENTAL ANALYSIS AND MODELLING OF GRINDING AISI D3 STEELijmech
Grinding of hardened steels for the realisation of better surface quality of the workpiece is an essentiality
of high productivity environments. The surface grinding of high carbon high chromium steels like AISI D3
with a production level grinding wheel used in the industry is the driver of the present research article. The
experimentation is done in dry as well as pool cooling conditions to ascertain the better of the two
conditions in providing a better set of cutting forces and surface finish. A mathematical model for
evaluating the forces generated during grinding is evolved and on comparison of the results obtained from
the model with the ones from experimentation is found to be correlating. The usage of production level
vitrified grinding wheel has shown good results in terms of lower forces generated and good surface finish
during surface grinding. The results are optimised and the set of inputs which yield good surface finish and
low forces are given. Dry grinding of AISI D13 yields good surface finish than wet grinding. Surface finish
of 0.14 microns is achievable using dry grinding.
IRJET- Experimental and Computational Simulation of CUZN37 Brass Alloy Proces...IRJET Journal
1) The document presents experimental and computational simulation of severe plastic deformation of CuZn37 brass alloy sheet using constrained groove pressing (CGP) with flat groove corrugated dies.
2) Both experimental and simulation results using AFDEX software showed that the effective strain and Brinell hardness of the alloy increased with increasing number of CGP passes up to the fourth pass, then slightly decreased in the fifth pass.
3) Microstructural analysis revealed that CGP led to the formation of non-uniform subgrains and refined the initial coarse grain structure of the alloy, resulting from dislocation behavior and the development of a deformed substructure.
Effect of machining parameters on surface roughness for 6063 al tic (5 & 10 %...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Characterization of al sic metal matrix by stir-castingIAEME Publication
This document summarizes research on the production and characterization of Aluminum-Silicon Carbide (AlSiC) metal matrix composites fabricated using stir casting. Samples of AlSiC composites with 5-30% SiC by weight were produced. Testing showed that hardness and impact strength increased with higher SiC content, with maximum values at 25% SiC. Microstructure examination found increasing homogeneous dispersion of SiC particles with methods using mechanical stirring during production. The study demonstrated that stir casting can produce AlSiC composites with improved mechanical properties for engineering applications.
The document describes a study that uses finite element analysis and Taguchi's method to optimize the preform shape of a connecting rod forging. The goal is to minimize forging load and produce defect-free forgings. Finite element software was used to simulate hot forging of the connecting rod under different preform design parameters, including flash thickness, width, and radii. Taguchi's method was then applied to design parameter combinations to determine the most influential parameters. Through several optimization iterations, the optimal preform shape that gave minimum forging load and complete die filling was obtained. The approach aims to reduce design time and costs compared to traditional trial and error methods.
This document summarizes research on the frictional and wear characteristics of non-asbestos brake pads tested using a link chase machine. It provides background on the use of asbestos in brake pads and the need to find alternatives. The link chase machine test procedure and parameters are described, including baseline, fade, recovery, and wear tests at different temperatures. Previous studies investigating the friction and wear of various non-asbestos composite materials are reviewed. The document concludes by outlining the scope for future research to further improve the stability and performance of non-asbestos brake pads.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
IRJET-Experimental Investigation of Microstructure and Mechanical Characteris...IRJET Journal
This document summarizes an experimental investigation into the microstructure and mechanical properties of Aluminum 5083 composites reinforced with different weight percentages of fly ash. The composites were fabricated using stir casting and tested for hardness, tensile strength, and wear resistance. Key results include that incorporating up to 15% fly ash led to improvements in Al alloy resistance without affecting tensile strength or hardness significantly. Microstructure analysis found uniform fly ash distribution and good particle-matrix bonding. The 5% fly ash composite exhibited the highest tensile strength and lowest wear coefficient.
Structural Health Monitoring of Fibre Reinforced Polymer Composite Leaf Springpaperpublications3
Abstract: The Structural Health Monitoring (SHM) has gained wide acceptance in the recent years as a means to monitor a structure and provide an early warning of an unsafe condition using real time data. Many researchers have shown that, Fiber Reinforced Polymer (FRP) composite leaf springs can be successfully used for suspension systems. This paper emphasizes on developing the SHM system for E-Glass/Epoxy FRP composite leaf springs based on strain sensing.
Keywords: Structural health monitoring, Fiber reinforced polymer, Strain-gauge sensors, Composite leaf spring, E-Glass/Epoxy.
Ben Shafer Asa San Diego2011 Tues Aft 2p Aa V7otishobbes
This is an invited presentation given at the San Diego ASA meeting, 2011, on the uses and application of constrained-layer damping in building noise control and future research in this regard.
Modelling and Analysis of Hybrid Composite Joint Using Fem in AnsysIOSR Journals
Abstract: Composite materials are widely used in the various Fields. Due to the high strength they are widely
used in the low weight constructions and also used as a suitable alternative to metals. In various applications
and also for joining various composite parts together, they are fastened together using adhesives or Mechanical
fasteners. Modeling and static analysis of 3-D Models of joints such as bonded, riveted and hybrid. The results
were found in terms of vonmises stress, shear stress, and normal stress for stress distribution. ANSYS FEA tool
has been used for stress distribution characteristics of various configurations of double riveted single lap joint
with three joining methods namely bonded, riveted and hybrid the present study deals with the analysis of single
lap joint subjected to the given tensile load and the stress distribution in the members under various design
conditions are found.
Effect of alkali treatment on vibration characteristics and mechanical proper...Libo Yan
In this article, the effect of alkali treatment (with 5 wt. % sodium hydroxide solution for 30 min) on the compressive,
in-plane shear, impact properties and vibration characteristics of flax- and linen-fabric reinforced epoxy composites was
investigated. Test results show that alkali treatment enhanced the compressive strength and compressive modulus,
in-plane shear strength and shear modulus, and specific impact strength of both flax- and linen-epoxy composites.
However, after the treatment, the impact strength and damping ratio of the flax and linen composites decreased. The
reduction in impact strength and damping ratio is believed to be attributed to the improved fibre/matrix interfacial
adhesion, as analysed by scanning electron microscope.
Investigation on Dynamic Behaviour of Hybrid Sisal/Bagasse Fiber Reinforced E...AM Publications
The present study deals with transverse vibration analysis of hybrid sisal-bagasse fabric reinforced epoxy
composites. The hybrid sisal-bagasse composite are prepared by hand lay-up technique using treated sisal and bagasse
as reinforced materials and commercially available epoxy resin as a matrix material. Hybrid sisal-bagasse fabric
reinforced epoxy composite having aspect ratio of 0.83 with 5 layers of cloth for hybrid sisal-bagasse composite with
fiber direction orientation at [+90°/+45°/0°/-45°/-90°] composite is prepared. In the analysis, a frequency domain
model is used along with Frequency Response Function (FRF) measurements obtained from the plate. These
measurements are made using a Fast Fourier Technique (FFT) based spectrum analyzer. Natural frequency,
damping factor and mode shapes are obtained from the composites.
Modelling and Analysis of Hybrid Composite Joint Using Fem in ANSYSIJMER
Composite materials are widely used in the various Fields. Due to the high strength they
arewidelyusedinthelowweightconstructionsandalsousedasasuitablealternativetometals.Invariousapplicat
ionsAnd also for joining various composite parts together, they are fastened together using adhesives or
Mechanical fasteners. Modelling and static analysis of 3-D Models of joints such as bonded, riveted and
hybrid. The results were found in terms of von-mises stress, shear stress and normal stress for stress
distribution. ANSYS FEA tool has been used for stress distribution characteristics of various
configurations of double riveted single lap joint with three joining methods namely bonded, riveted and
hybrid the present study deals with the analysis of single lap joint subjected to the given tensile load and
the stress distribution in the members under various design conditions are found
The document summarizes research on the design and fabrication of hybrid composite springs. Five different types of springs were created using epoxy, glass fiber, and silk at varying volume fractions. Mechanical tests were conducted to evaluate the springs' performance. Literature on composite leaf springs, natural fiber composites, and fatigue testing of helical springs is also reviewed. The research aims to reduce vehicle weight through replacing traditional steel springs with lighter composite alternatives.
IRJET- Review on Tribological Modeling of Worm GearIRJET Journal
This document reviews various tribological modeling techniques for analyzing wear in worm gears. It discusses Archard's wear model, which is commonly used to predict wear by calculating the wear of each point on the wheel tooth surface over multiple wear steps while modifying the geometry. Finite element analysis can be used to simulate similar conditions and validated experimentally using tribometers. The document also summarizes several research papers on topics like stochastic wear modeling, modeling lubrication and contact conditions in worm gears, determining allowable wear limits, and developing models to calculate locally varying friction coefficients and analyze the effect of surface asperities on wear.
Partially Lateritised Khondalite (PLK) rocks are the bauxite mining waste materials
generated during mining and dumped at the mining site, create environmental pollution. These waste
rocks can be utilized as filler materials for different industrial applications after grinding to suitable
mesh size. Thermal shock treatment on ore is used for grain boundary breakage and size reduction,
due to thermal shock treatment the surface adsorbed gangue minerals also releases and expose new
surface area in the ore. Comminution study is used after this treatment for further reduction in size.
In comminution study, ball mill has good selective grinding performance. This paper deals with the
effect of thermal shock treatment on grinding characteristics of PLK rock and the overall energy
savings achieved. Alumina based filler/ceramic materials were used in different industries. Thermal
shock of the samples was evaluated using water quench test. Surface deterioration level of samples
was monitored by image analysis before and after quenching. A total energy saving of the order of
52.8 % could be achieved when a sample preheated at 1123 K for 60 minutes followed by coldwater
quenching and grinding.
This document summarizes research on 3D printing hollow compounds of different shapes. It discusses how 3D printing allows for more optimized geometries compared to traditional manufacturing and can produce hollow turbine blades, gears, and disc brakes with properties similar to solid compounds. Finite element analysis was performed on hollow and solid shapes of different cross-sections, finding equivalent stresses were approximately the same. 3D printing reduces material costs and makes manufacturing hollow compounds easier compared to traditional methods. The document concludes 3D printing technologies provide design flexibility while creating parts with layer-by-layer printing instead of traditional manufacturing approaches.
This research was a part of my Dual Degree Thesis and presented at The Minerals Metals and Materials Society Annual Meeting and Conference held at Seattle, WA in 2010.
The document discusses the design of a forging die for a planetary gear blank. It begins with an introduction to forging as a metalworking process and advantages it provides over other manufacturing methods. It then outlines the objectives and methodology for the die design project. The methodology involves designing the final gear part geometry, determining stock size requirements, and designing the forging die. Key die design considerations discussed include parting line selection, drafting angles, fillet and corner radii, flash and gutter design, and shrinkage allowance. The document concludes with CAD drawings of the designed forging die.
ANALYSIS AND SIZE OPTIMIZATION OF COMPOSITE LEAF SPRING USING FEAAmit Kotadiya
This document analyzes and compares steel and composite leaf springs using finite element analysis. It describes modeling a steel leaf spring and performing static analysis in ANSYS to calculate stress and deflection. The results are compared to analytical calculations, with a 5-10% difference. A composite multi-leaf spring is then modeled using carbon/epoxy laminates. Static analysis shows the composite leaf spring has an 80% reduced weight compared to steel, with improved load capacity and stiffness. Size optimization of a composite mono-leaf spring further reduces weight by 88.57% and thickness by 1mm.
EXPERIMENTAL ANALYSIS AND MODELLING OF GRINDING AISI D3 STEELijmech
Grinding of hardened steels for the realisation of better surface quality of the workpiece is an essentiality
of high productivity environments. The surface grinding of high carbon high chromium steels like AISI D3
with a production level grinding wheel used in the industry is the driver of the present research article. The
experimentation is done in dry as well as pool cooling conditions to ascertain the better of the two
conditions in providing a better set of cutting forces and surface finish. A mathematical model for
evaluating the forces generated during grinding is evolved and on comparison of the results obtained from
the model with the ones from experimentation is found to be correlating. The usage of production level
vitrified grinding wheel has shown good results in terms of lower forces generated and good surface finish
during surface grinding. The results are optimised and the set of inputs which yield good surface finish and
low forces are given. Dry grinding of AISI D13 yields good surface finish than wet grinding. Surface finish
of 0.14 microns is achievable using dry grinding.
IRJET- Experimental and Computational Simulation of CUZN37 Brass Alloy Proces...IRJET Journal
1) The document presents experimental and computational simulation of severe plastic deformation of CuZn37 brass alloy sheet using constrained groove pressing (CGP) with flat groove corrugated dies.
2) Both experimental and simulation results using AFDEX software showed that the effective strain and Brinell hardness of the alloy increased with increasing number of CGP passes up to the fourth pass, then slightly decreased in the fifth pass.
3) Microstructural analysis revealed that CGP led to the formation of non-uniform subgrains and refined the initial coarse grain structure of the alloy, resulting from dislocation behavior and the development of a deformed substructure.
Effect of machining parameters on surface roughness for 6063 al tic (5 & 10 %...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Characterization of al sic metal matrix by stir-castingIAEME Publication
This document summarizes research on the production and characterization of Aluminum-Silicon Carbide (AlSiC) metal matrix composites fabricated using stir casting. Samples of AlSiC composites with 5-30% SiC by weight were produced. Testing showed that hardness and impact strength increased with higher SiC content, with maximum values at 25% SiC. Microstructure examination found increasing homogeneous dispersion of SiC particles with methods using mechanical stirring during production. The study demonstrated that stir casting can produce AlSiC composites with improved mechanical properties for engineering applications.
The document describes a study that uses finite element analysis and Taguchi's method to optimize the preform shape of a connecting rod forging. The goal is to minimize forging load and produce defect-free forgings. Finite element software was used to simulate hot forging of the connecting rod under different preform design parameters, including flash thickness, width, and radii. Taguchi's method was then applied to design parameter combinations to determine the most influential parameters. Through several optimization iterations, the optimal preform shape that gave minimum forging load and complete die filling was obtained. The approach aims to reduce design time and costs compared to traditional trial and error methods.
This document summarizes research on the frictional and wear characteristics of non-asbestos brake pads tested using a link chase machine. It provides background on the use of asbestos in brake pads and the need to find alternatives. The link chase machine test procedure and parameters are described, including baseline, fade, recovery, and wear tests at different temperatures. Previous studies investigating the friction and wear of various non-asbestos composite materials are reviewed. The document concludes by outlining the scope for future research to further improve the stability and performance of non-asbestos brake pads.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
IRJET-Experimental Investigation of Microstructure and Mechanical Characteris...IRJET Journal
This document summarizes an experimental investigation into the microstructure and mechanical properties of Aluminum 5083 composites reinforced with different weight percentages of fly ash. The composites were fabricated using stir casting and tested for hardness, tensile strength, and wear resistance. Key results include that incorporating up to 15% fly ash led to improvements in Al alloy resistance without affecting tensile strength or hardness significantly. Microstructure analysis found uniform fly ash distribution and good particle-matrix bonding. The 5% fly ash composite exhibited the highest tensile strength and lowest wear coefficient.
Structural Health Monitoring of Fibre Reinforced Polymer Composite Leaf Springpaperpublications3
Abstract: The Structural Health Monitoring (SHM) has gained wide acceptance in the recent years as a means to monitor a structure and provide an early warning of an unsafe condition using real time data. Many researchers have shown that, Fiber Reinforced Polymer (FRP) composite leaf springs can be successfully used for suspension systems. This paper emphasizes on developing the SHM system for E-Glass/Epoxy FRP composite leaf springs based on strain sensing.
Keywords: Structural health monitoring, Fiber reinforced polymer, Strain-gauge sensors, Composite leaf spring, E-Glass/Epoxy.
Ben Shafer Asa San Diego2011 Tues Aft 2p Aa V7otishobbes
This is an invited presentation given at the San Diego ASA meeting, 2011, on the uses and application of constrained-layer damping in building noise control and future research in this regard.
Modelling and Analysis of Hybrid Composite Joint Using Fem in AnsysIOSR Journals
Abstract: Composite materials are widely used in the various Fields. Due to the high strength they are widely
used in the low weight constructions and also used as a suitable alternative to metals. In various applications
and also for joining various composite parts together, they are fastened together using adhesives or Mechanical
fasteners. Modeling and static analysis of 3-D Models of joints such as bonded, riveted and hybrid. The results
were found in terms of vonmises stress, shear stress, and normal stress for stress distribution. ANSYS FEA tool
has been used for stress distribution characteristics of various configurations of double riveted single lap joint
with three joining methods namely bonded, riveted and hybrid the present study deals with the analysis of single
lap joint subjected to the given tensile load and the stress distribution in the members under various design
conditions are found.
Effect of alkali treatment on vibration characteristics and mechanical proper...Libo Yan
In this article, the effect of alkali treatment (with 5 wt. % sodium hydroxide solution for 30 min) on the compressive,
in-plane shear, impact properties and vibration characteristics of flax- and linen-fabric reinforced epoxy composites was
investigated. Test results show that alkali treatment enhanced the compressive strength and compressive modulus,
in-plane shear strength and shear modulus, and specific impact strength of both flax- and linen-epoxy composites.
However, after the treatment, the impact strength and damping ratio of the flax and linen composites decreased. The
reduction in impact strength and damping ratio is believed to be attributed to the improved fibre/matrix interfacial
adhesion, as analysed by scanning electron microscope.
Investigation on Dynamic Behaviour of Hybrid Sisal/Bagasse Fiber Reinforced E...AM Publications
The present study deals with transverse vibration analysis of hybrid sisal-bagasse fabric reinforced epoxy
composites. The hybrid sisal-bagasse composite are prepared by hand lay-up technique using treated sisal and bagasse
as reinforced materials and commercially available epoxy resin as a matrix material. Hybrid sisal-bagasse fabric
reinforced epoxy composite having aspect ratio of 0.83 with 5 layers of cloth for hybrid sisal-bagasse composite with
fiber direction orientation at [+90°/+45°/0°/-45°/-90°] composite is prepared. In the analysis, a frequency domain
model is used along with Frequency Response Function (FRF) measurements obtained from the plate. These
measurements are made using a Fast Fourier Technique (FFT) based spectrum analyzer. Natural frequency,
damping factor and mode shapes are obtained from the composites.
Modelling and Analysis of Hybrid Composite Joint Using Fem in ANSYSIJMER
Composite materials are widely used in the various Fields. Due to the high strength they
arewidelyusedinthelowweightconstructionsandalsousedasasuitablealternativetometals.Invariousapplicat
ionsAnd also for joining various composite parts together, they are fastened together using adhesives or
Mechanical fasteners. Modelling and static analysis of 3-D Models of joints such as bonded, riveted and
hybrid. The results were found in terms of von-mises stress, shear stress and normal stress for stress
distribution. ANSYS FEA tool has been used for stress distribution characteristics of various
configurations of double riveted single lap joint with three joining methods namely bonded, riveted and
hybrid the present study deals with the analysis of single lap joint subjected to the given tensile load and
the stress distribution in the members under various design conditions are found
Damping Of Composite Material Structures with Riveted JointsIJMER
Vibration and noise reduction are crucial in maintaining high performance level and
prolonging the useful life of machinery, automobiles, aerodynamic and spacecraft structures. It is
observed that damping in materials occur due to energy release due to micro-slips along frictional
interfaces and due to varying strain regions and interaction between the metals. But it was found
that the damping effect in metals is quite small that it can be neglected. Damping in metals is due to
the micro-slips along frictional interfaces. Composites, however, have better damping properties
than structural metals and cannot be neglected. Typically, the range of composite damping begins
where the best damped metal stops.In the present work, theoretical analysis was done on various
polymer matrix composite (glass fibre polyesters) with riveted joints by varying initial conditions.
Strain energy loss was calculated to calculate the damping in composites. Using FEA model, load
variation w.r.t time was observed and the strain energy loss calculated was utilised in finding the
material damping for Carbon fibre epoxy with riveted joints. Various simulations were performed in
ANSYS and these results were utilised to calculate the loss factor, Rayleigh‘s damping constants
and logarithmic decrement.
This thesis investigates the fabrication and damping behavior of particulate barium titanate ceramic reinforced copper matrix composites. Barium titanate powders of different particle sizes were characterized to study the effect of particle size on their tetragonality. Copper-barium titanate composites with 40% volume fraction of 209μm, 66μm and 2μm barium titanate particles were fabricated. Dynamic mechanical analysis showed the composites had higher damping capacity than unreinforced copper, with the damping dependent on temperature up to the Curie point of barium titanate. However, the small drop in damping above the Curie point indicated ferroelectricity contributed little to overall damping in the composites
This document introduces viscoelastic materials and classical damping models including the Maxwell, Kelvin-Voigt, and Zener models. It examines the creep, relaxation, and dynamic properties of each model. The Maxwell model describes the material as a spring and dashpot in series. The Kelvin-Voigt model uses a spring and dashpot in parallel. The Zener model combines features of the Maxwell and Kelvin-Voigt models. Graphs show how the storage modulus and loss factor vary with frequency for each model.
This document discusses the viscoelastic properties of biological materials like bone and ligament, noting that the elastic modulus and strength of bone increases as the strain rate increases from slow walking to fast running. It also explains that bone is composed of mineralized collagen fibrils, giving it viscoplastic behavior where it will continue to deform under constant stress over time without fracturing. Graphs are presented showing the relationship between bone strain over time and increases in modulus and strength with higher loading rates.
The document discusses research done at the University of New Orleans on developing multifunctional composite materials with properties of energy absorption, blast protection, and durability. The research applied nanotechnology by utilizing nanomaterials to dissipate shock and blast energy through mechanisms like friction and slip-stick motion. Experiments were conducted using nano-particle filled composites under impact loading and CNT reinforced composites for vibration damping. The research proved that energy absorption can be achieved through nanoparticle interfaces providing large energy sinks.
This presentation is given at Santa Clara Ansys Conference in 2014, where we have presented the viscoelastic modelling capabilities in Ansys and the basic requirements for such modelling. The presentation is simple and a good starting point to understand viscoelastic modeling in Ansys.
What is viscoelastic damping?
What are the classical models?
What is creep?
What is Relaxation?
What is complex modulus?
#WikiCourses
http://wikicourses.wikispaces.com/Topic01+Viscoelastic+Materials
Toward overcoming the concept of effective stiffness and damping in the dynam...Alessandro Palmeri
In the current state-of-practice, the time-domain dynamic analysis of structures incorporating viscoelastic members is generally carried out through the Modal Strain Energy (MSE) method, or other procedures somehow based on the quite simplistic idea of substituting the actual viscoelastically damped structure with an equivalent system featuring a pure viscous damping.
This crude approximation in civil engineering applications is very often encouraged by manufacturers of the viscoelastic devices themselves, whose interest is to simplify as much as possible the design procedures for structures embedding their products. As an example, elastomeric seismic isolators are generally advertised and sold with a table listing the equivalent values of elastic stiffness and viscous damping ratio for different amplitudes of vibration. Unfortunately, many experimental and analytical studies confirm that the real dynamic behaviour of such devices is much more complicated, and cannot be bend to the interests of manufacturers and designers.
Despite the advances in the field made in the last two decades, two well-established beliefs continue to underpin use and abuse of the concepts of effective stiffness and damping for viscoelastically damped structures: first, MSE method and similar procedures are unconditionally assumed to provide good approximations, which are acceptable for design purposes; second, the implementation of more refined approaches is thought to be computationally too expensive, and hence suitable just for a few very important constructions.
In this presentation, as a further contribution to overcome these popular beliefs, a novel time-domain numerical scheme of dynamic analysis is proposed and numerically validated. After a brief review of the LPA (Laguerre’s Polynomial Approximation) technique for one-dimensional viscoelastic members of known relaxation function, the state-space equations of motion for linear structures with viscoelastic components are derived in the modal space. Aimed at making the proposed approach more general, the distribution of the viscoelastic components is allowed to be non-proportional to mass and elastic stiffness, in so removing the most severe limitation of previous formulations. Then, a cascade scheme is derived by decoupling in each time step traditional state variables (i.e. modal displacements and velocities) and additional internal variables. The joint use of modal analysis and improved cascade scheme permits to reduce the size of the problem and to keep low the computational burden. The illustrative application to the small-amplitude vibration of a cable beam made of different viscoelastic materials demonstrates the versatility of the proposed approach. The numerical results confirm a superior accuracy with respect to the classical MSE method, whose underestimate in the low-frequency range can be as large as 75%.
Vibrations and fatigue- vibration interactions of laminated composites.Padmanabhan Krishnan
This slide show describes the vibrations and fatigue vibrations characteristics of laminated composites like glass/epoxy, carbon/epoxy and their hybrids.
This document discusses replacing traditional leaf springs in vehicles with composite leaf springs made of fiberglass-reinforced plastic. It begins by introducing composite materials and their benefits of lighter weight, stiffness, and corrosion resistance. Leaf springs are then described as flat plates commonly used in heavy vehicles for suspension. Analysis was performed in ANSYS to compare the stress, strain, bending stress, and deformation of traditional steel leaf springs and composite leaf springs under different loads. The results show the composite leaf springs can reduce weight by around 60% while increasing fatigue life and providing benefits like better damping and corrosion resistance over steel springs.
This document summarizes information about vibration analysis and damping in structures. It discusses causes and effects of structural vibration, methods for reducing vibration, and analyzing structural vibration through modeling and solving equations of motion. Specific topics covered include free and forced vibration of structures with one degree of freedom, damping methods like viscous, dry friction and hysteretic, vibration isolation, shock excitation, and wind-excited oscillation. Sources of damping in structures and methods for adding damping like dampers and absorbers are also summarized.
Metal matrix composites (MMCs) possess significantly improved properties including highspecific strength; specific modulus, damping capacity and good wear resistance compared to unreinforced alloys. There has been an increasing interest in composites containing low density and low cost reinforcements. Among various discontinuous dispersoids used, fly ash is one of the most inexpensive and low density reinforcement available in large quantities as solid waste by-product during combustion of coal in thermal power plants. Hence, composites with fly ash as reinforcement are likely to overcome the cost barrier for wide spread applications in automotive and small engine applications.
This presentation gives the information about 'vibration measuring instruments' covering syllabus of Unit-5 of Theory of vibrations or mechanical vibrations for BE course under VTU, Belgaum. This presentation is prepared by Hareesha N G, Asst. Prof, Dept of Aerospace, DSCE, B'Lore-78.
ANN Model Based Calculation of Tensile of Friction Surfaced Tool Steelijtsrd
Friction surface treatment is well established solid technology and is used for deposition, abrasion and corrosion protection coatings on rigid materials. This novel process has wide range of industrial applications, particularly in the field of reclamation and repair of damaged and worn engineering components. In this paper, present the prediction of tensile of friction surface treated tool steel using ANN for simulated results of friction surface treatment. This experiment was carried out to obtain tool steel coatings of low carbon steel parts by changing input process parameters such as friction pressure, rotational speed and welding speed. The simulation is performed by a 33 factor design that takes into account the maximum and minimum limits of the experimental work performed by the 23 factor design. Neural network structures, such as the Feed Forward Neural Network FFNN , were used to predict tensile tool steel sediments caused by friction. V. Pitchi Raju "ANN Model Based Calculation of Tensile of Friction Surfaced Tool Steel" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29169.pdf Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/29169/ann-model-based-calculation-of-tensile-of-friction-surfaced-tool-steel/v-pitchi-raju
The bended boards are utilized as a part of present day basic framework, in light of the fact that the shape control of structures accomplishes the sought execution. The static and element shakiness conduct of bended boards made of cutting edge composite materials are of extraordinary significance to originators, in the journey to deliver proficient light weight structures because of their high solidness to weight and quality to weight properties. A portion of the auxiliary parts of air ship, rocket and marine structures can be romanticized as bended boards. The composite bended boards are widely utilized as a part of aviation, common, mechanical, car and other building applications. The major normal recurrence of composite bended boards very relies on upon the employ introductions, geometries, edge powers. So the investigation of element conduct of bended boards subjected to out-plane static and occasional edge loadings are critical in research and application perspective. This work exhibits a reproduction investigation of free vibration of bended boards. An examination was made amongst isotropic and orthotropic bended boards in perspective of lessening the heaviness of the isotropic bended boards. The modular qualities of isotropic (Aluminium) and orthotropic (carbon-epoxy composite) bended boards with cantilever limit condition (one end is settled and another end is free) has been broke down. The attributes of composite material fluctuates relying upon the kind of the connected material, amount, fibre introduction edge and so on. The characteristic recurrence and mode state of the boards has been gotten utilizing ANSYS. Midline eight-hub isoperimetric layered shell components (SHELL 99) are utilized in the demonstrating for depicting the bowing vibrations of these bended boards. The impact of fibre headings and stacking courses of action of covers on out-of-plane vibrations were explored. The bended board re-enactment consequences of the isotropic materials are contrasted and the orthotropic materials under cantilever plate limit conditions with different fibre point introduction and stacking grouping. It is likewise acquired that the regular frequencies change with the change of introduction edge.
IRJET - Experimental Investigation of Carbon Fiber Reinforcement T-Stiffe...IRJET Journal
This document presents an experimental investigation comparing the structural performance of a T-stiffened composite panel with aluminum reinforcement to an existing T-stiffened aluminum panel. A finite element analysis was conducted to analyze the stress, strain, and reaction force of each panel under tensile loading. It was found that reinforcing the composite panel with carbon fiber layers improved its maximum reaction force from 23 kN to 81 kN compared to the aluminum-only panel. The composite reinforcement enhanced the panel's strength and stiffness.
This document reviews the analysis and design of bullet resistant jackets through ballistic analysis. It discusses the use of composite materials like Kevlar, nylon, and aramids in bullet proof vests and how they deform and absorb impact when struck by bullets through simulations using ANSYS. It examines the properties of different materials, how they perform under high velocity impacts, and which materials absorb the most energy and deformation like Kevlar and nylon to better protect the wearer.
On account of cutting gadget holder preoccupation, cutting force affects the
dimensional precision. The troublesome of equipment holder redirection is attempted
routinely in a course of action of building surface things, and to accomplish this point
uninvolved strategy can be utilized. In this unassuming work, a refreshed hypothetical
momentous cutting force appear for end getting ready is open, utilizing confined part
approach. The model be committed to variable data sources, pick the kind of the end
procedure holder, in the event that it is straight or discontinuous. The cutting
parameters are given for getting a perfect preparing instrument redirection dispersing
and rehash an area examination. The expansion results demonstrate that the
instrument evading impacts the dimensional precision of the completed part. The
essential structures of pulled back technique for distraction mask of mechanical
frameworks are quickly exhibited. It depends upon the hypothesis of dynamic
redirection. For handling forces and gadget holder redirection, two sorts of instability
show yields are shown identifying with cutting force parameters
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Modelling and Analysis of CNC Milling Machine Bed with Composite Materialijsrd.com
Structural materials used in a machine tool have a decisive role in determining the productivity and accuracy of the part manufactured in it. The conventional structural materials used in precision machine tools such as cast iron and steel at high operating speeds develop positional errors due to the vibrations transferred into the structure. Faster cutting speeds can be acquired only by structure which has high stiffness and good damping characteristics. Clearly the life of a machine is inversely proportional to the levels of vibration that the machine is subjected. The further process is carried out to undergo the deformation, natural frequency and displacement using Static analysis, Modal analysis and Harmonic analysis respectively. Since the bed in machine tool plays a critical role in ensuring the precision and accuracy in components. It is one of the most important tool structures which tend to absorb the vibrations resulting from the cutting operation. To analyze the bed for possible material changes that could increase stiffness, reduce weight, improve damping characteristics and isolate natural frequency from the operating range. This was the main motivation behind the idea to go in for a composite model involving High Modulus Carbon Fiber Reinforced Polymer Composite Material (HM CFRP). Though carbon has good strength and stiffness properties but it lacks in damping requirements. On the other hand polymer, though it lacks in strength but it has good damping characteristics and it is used to hold the carbon fibers. This makes it ideal to combine these materials in a proper manner. In this work, a machine bed is selected for the analysis static loads. Then investigation is carried out to reduce the weight of the machine bed without deteriorating its structural rigidity. The 3D CAD model of the bed has been created by using commercial 3D modelling software and analyses were carried out using ANSYS.
Experimental & Numerical Analysis of Composites with DelaminationsIRJET Journal
This document summarizes research on analyzing the effect of delaminations on the vibration characteristics of composite materials. It presents both experimental and numerical (ANSYS) analysis of a composite beam with varying percentages of delamination (0-40%). The results show that natural frequency decreases with increasing delamination size, as delamination reduces structural stiffness. Experimentally measured natural frequencies closely matched those from numerical analysis. The research demonstrates that vibration testing can successfully detect internal delaminations and monitor damage in composite structures.
This document discusses experimental and numerical analysis of composites with delaminations. It summarizes that composites are widely used due to properties like strength and stiffness but are prone to delamination defects. The presence of delaminations reduces stiffness and changes vibration characteristics. The study investigates the effect of different percentages of delamination on the natural frequency of composite beams, through both experimental modal testing and numerical simulation using ANSYS. The results show that natural frequency decreases with increasing delamination size, with good agreement between experimental and numerical analysis. Frequency response functions also demonstrate changes with delamination.
Contents lists available at ScienceDirectPrecision Enginee.docxdonnajames55
This document describes the design and analysis of strut-based lattice structures for vibration isolation. Six lattice structure designs are presented and analyzed using two proposed design parameters: total area moment of inertia and mass. The design parameters aim to allow comparison of lattice designs to select one that provides high vibration isolation efficiency while maintaining sufficient structural integrity. Finite element analysis is used to determine the theoretical static and dynamic properties, which are then experimentally tested and compared to the models.
NUMERICAL INVESTIGATION ON THE PUNCHING BEHAVIOR OF RC FLAT SLABS STRENGTHENI...IAEME Publication
In this paper, the effectiveness of textile-reinforced mortar (TRM) and fiberreinforced
polymer (FRP), as a means of improving the punching behavior of
reinforced concrete flat slabs were numerically investigated. Finite element (FE)
model using ABAQUS computer program was developed to analyze eight half-scaled
slabs, in terms of load-carrying capacity, ductility, stiffness, and crack patterns. These
eight specimens were divided into two groups (G1 and G2) with four specimens for
each of them. Specimens of G1 was similar to that of G2 in all details but differ in the
eccentricity of the applied load. Specimens of G1 were tested with concentric load,
while these of G2 were tested with 150 mm eccentricity. For each group, one specimen
was built as control (unstrengthened), one was strengthened by FRP-sheet, and the
other two was strengthened by TRM-jacket with two different mesh opening (10 and
20 mm). The results obtained from FE analysis showed that the efficiency of TRM in
increasing the punching shear capacity of strengthened slabs was less than that of
FRP. In addition, the slabs strengthened by TRM showed stiffer behavior than that
strengthened by FRP, but lesser ductile. TRM effectiveness was sensitive to the mesh
size of the textile. When the mesh size decreased, stiffness was increased and ductility
was decreased.
Numerical and Theoretical Analysis for Investigation of Shear strength of A J...ijsrd.com
This document presents a numerical and theoretical analysis of the shear strength of an adhesive joint used in an automotive application. Finite element analysis was conducted using ABAQUS software to determine the shear stresses induced in two adhesive materials joining a brake shoe assembly under an applied torque load. Shear stress values from the finite element analysis were validated using theoretical calculations. The results showed that one of the adhesive materials (Material 2) produced lower shear stresses than the other (Material 1) according to both the numerical and theoretical analyses. The study aimed to determine the optimal adhesive material and joint design to maximize shear strength for the automotive application.
The document presents an experimental study on the effect of rivets on damping in jointed structures. Specifically, it investigates how the damping ratio of cantilever beams made of mild steel is affected by increasing the number of connecting rivets. Both experimental and finite element analysis are conducted. In the experiments, specimens of different thickness ratios and rivet configurations are tested using an FFT analyzer to determine their natural frequencies and damping ratios. The finite element models are developed in ANSYS and harmonic analysis is performed. The results show that the damping capacity increases substantially with more rivets, due to greater friction at the interfaces. Both experimental and FEA results are found to be in good agreement.
Vibration Analysis of Multilayered beam of Graphite Epoxy, Epoxy E- Glass Com...IRJET Journal
This document summarizes a study on the vibration analysis of multilayered beams made of graphite epoxy and epoxy-glass composites. The study analyzed the natural frequencies and mode shapes of four-layered composite beams under various stacking sequences, fiber orientations, materials, and boundary conditions. The beams were modeled using finite element analysis in ANSYS and the natural frequencies were calculated. The results show that natural frequency decreases with increasing fiber orientation angle and increases with increasing beam stiffness. Boundary conditions like fixed-fixed had higher natural frequencies than other conditions like fixed-free.
Probabilistic design and random optimization of hollow rectangular composite ...IAEME Publication
This document describes a probabilistic design and random optimization of a hollow rectangular composite beam structure using finite element analysis. A Monte Carlo simulation was conducted by randomly varying design parameters like beam length, ply angles, elastic modulus, and force within defined ranges. Scatter plots of maximum bending stress were obtained for different parameter combinations. Random optimization was then performed to minimize bending stress, obtaining 1000 feasible sets. The best set that reduced bending stress the most is proposed as the optimized design.
IMPROVEMENT IN SURFACE QUALITY WITH HIGH PRODUCTION RATE USING TAGUCHI METHOD...IAEME Publication
Metal matrix composites possess significantly improved properties including high specific strength, damping capacity, specific modulus and wear resistance compared to unreinforced alloys.There has been an increasing interest in composites containing low density and low cost reinforcements with good properties. Among these reinforcements SiC is found to be chemically compatible with aluminum forming a sufficiently strong bond with the matrix. There are several
methods of manufacture of MMCs. Of these, the stir casting method is very popular due to its unique mixing property.
Improvement in surface quality with high production rate using taguchi method...IAEME Publication
This document discusses experiments conducted to evaluate the effect of cutting variables on surface roughness and material removal rate during end milling of aluminum alloy-silicon carbide metal matrix composites. Experiments were conducted using a Taguchi design with four factors (silicon carbide percentage, spindle speed, feed rate, and depth of cut) at three levels. The results were analyzed using signal-to-noise ratios and ANOVA. The optimal parameters for high surface finish were low silicon carbide percentage and low spindle speed, while maximum material removal rate was achieved with high depth of cut, medium feed rate and silicon carbide percentage, and low spindle speed.
IRJET- Study Analysis of Metal Bending in a Sheet Metal using Finite Elem...IRJET Journal
This document summarizes a study that analyzed the bending of aluminum sheet metal and aluminum sandwich panels with different core materials using finite element analysis software. Sandwich panels with cores of polypropylene, polystyrene, carbon fiber, and glass fiber were modeled and their deformation and stress distributions under bending forces were compared to a monolithic aluminum sheet. The sandwich panels exhibited better bending resistance and damage resistance than the aluminum sheet. Overall, sandwich panels with the same thickness are recommended over aluminum sheets due to their better resistance to external forces. The study aims to find alternative materials to aluminum for use in aircraft to improve resistance to impacts from bird strikes.
Influence of Thrust, Torque Responsible for Delamination in drilling of Glass...IDES Editor
Glass fabric sandwich composites are potentially
growing materials which satisfies the low strength to weight
fraction, thermal conductivity, high strength and long
operational lifetime required for key engineering applications
especially in the field of Mechanical and Aerospace structures.
With their wide range of application, their manufacturing
and machinability characteristics are interesting to
investigate. Drilling is one of the prime manufacturing
processes used in assembly lines of components for fastening
and joining two components. In this study, Glass Fabric – Epoxy
/ Rigid polyurethane foam sandwich hybrid composite is drilled
in Arix VMC 100 CNC drilling machine using High Speed
Steel (HSS) drill bit of three different diameters of 6 mm, 8
mm and 10 mm. A L9 orthogonal array is setup to investigate
the result. Two main parameters that contribute to
delamination are thrust and torque. Thus in this
investigation, thrust and torque responsible for the effect of
delamination and hole quality is studied experimentally.
Scanning Electron Microscope (SEM) images are taken for
the drilled hole laminate to support the result.
Finite Element Analysis of Damping Performance of VEM Materials Using CLD Tec...IJERA Editor
Most engineering structures experiences vibrational motion, this unwanted vibrations can result in premature
structural failure. Many methods are developed which enhances capability of damping such as constrained layer
damping. Shear motion is produced in VEM due to constraining layer to resist unwanted vibrational energy.
This paper shows theeffect of varying the thickness of viscoelastic materials on damping performance of CLD
beam.The damping performance is measured in terms of modal loss factor.
Submission Deadline: 30th September 2022
Acceptance Notification: Within Three Days’ time period
Online Publication: Within 24 Hrs. time Period
Expected Date of Dispatch of Printed Journal: 5th October 2022
MODELING AND ANALYSIS OF SURFACE ROUGHNESS AND WHITE LATER THICKNESS IN WIRE-...IAEME Publication
White layer thickness (WLT) formed and surface roughness in wire electric discharge turning (WEDT) of tungsten carbide composite has been made to model through response surface methodology (RSM). A Taguchi’s standard Design of experiments involving five input variables with three levels has been employed to establish a mathematical model between input parameters and responses. Percentage of cobalt content, spindle speed, Pulse on-time, wire feed and pulse off-time were changed during the experimental tests based on the Taguchi’s orthogonal array L27 (3^13). Analysis of variance (ANOVA) revealed that the mathematical models obtained can adequately describe performance within the parameters of the factors considered. There was a good agreement between the experimental and predicted values in this study.
A STUDY ON THE REASONS FOR TRANSGENDER TO BECOME ENTREPRENEURSIAEME Publication
The study explores the reasons for a transgender to become entrepreneurs. In this study transgender entrepreneur was taken as independent variable and reasons to become as dependent variable. Data were collected through a structured questionnaire containing a five point Likert Scale. The study examined the data of 30 transgender entrepreneurs in Salem Municipal Corporation of Tamil Nadu State, India. Simple Random sampling technique was used. Garrett Ranking Technique (Percentile Position, Mean Scores) was used as the analysis for the present study to identify the top 13 stimulus factors for establishment of trans entrepreneurial venture. Economic advancement of a nation is governed upon the upshot of a resolute entrepreneurial doings. The conception of entrepreneurship has stretched and materialized to the socially deflated uncharted sections of transgender community. Presently transgenders have smashed their stereotypes and are making recent headlines of achievements in various fields of our Indian society. The trans-community is gradually being observed in a new light and has been trying to achieve prospective growth in entrepreneurship. The findings of the research revealed that the optimistic changes are taking place to change affirmative societal outlook of the transgender for entrepreneurial ventureship. It also laid emphasis on other transgenders to renovate their traditional living. The paper also highlights that legislators, supervisory body should endorse an impartial canons and reforms in Tamil Nadu Transgender Welfare Board Association.
BROAD UNEXPOSED SKILLS OF TRANSGENDER ENTREPRENEURSIAEME Publication
Since ages gender difference is always a debatable theme whether caused by nature, evolution or environment. The birth of a transgender is dreadful not only for the child but also for their parents. The pain of living in the wrong physique and treated as second class victimized citizen is outrageous and fully harboured with vicious baseless negative scruples. For so long, social exclusion had perpetuated inequality and deprivation experiencing ingrained malign stigma and besieged victims of crime or violence across their life spans. They are pushed into the murky way of life with a source of eternal disgust, bereft sexual potency and perennial fear. Although they are highly visible but very little is known about them. The common public needs to comprehend the ravaged arrogance on these insensitive souls and assist in integrating them into the mainstream by offering equal opportunity, treat with humanity and respect their dignity. Entrepreneurship in the current age is endorsing the gender fairness movement. Unstable careers and economic inadequacy had inclined one of the gender variant people called Transgender to become entrepreneurs. These tiny budding entrepreneurs resulted in economic transition by means of employment, free from the clutches of stereotype jobs, raised standard of living and handful of financial empowerment. Besides all these inhibitions, they were able to witness a platform for skill set development that ignited them to enter into entrepreneurial domain. This paper epitomizes skill sets involved in trans-entrepreneurs of Thoothukudi Municipal Corporation of Tamil Nadu State and is a groundbreaking determination to sightsee various skills incorporated and the impact on entrepreneurship.
DETERMINANTS AFFECTING THE USER'S INTENTION TO USE MOBILE BANKING APPLICATIONSIAEME Publication
The banking and financial services industries are experiencing increased technology penetration. Among them, the banking industry has made technological advancements to better serve the general populace. The economy focused on transforming the banking sector's system into a cashless, paperless, and faceless one. The researcher wants to evaluate the user's intention for utilising a mobile banking application. The study also examines the variables affecting the user's behaviour intention when selecting specific applications for financial transactions. The researcher employed a well-structured questionnaire and a descriptive study methodology to gather the respondents' primary data utilising the snowball sampling technique. The study includes variables like performance expectations, effort expectations, social impact, enabling circumstances, and perceived risk. Each of the aforementioned variables has a major impact on how users utilise mobile banking applications. The outcome will assist the service provider in comprehending the user's history with mobile banking applications.
ANALYSE THE USER PREDILECTION ON GPAY AND PHONEPE FOR DIGITAL TRANSACTIONSIAEME Publication
Technology upgradation in banking sector took the economy to view that payment mode towards online transactions using mobile applications. This system enabled connectivity between banks, Merchant and user in a convenient mode. there are various applications used for online transactions such as Google pay, Paytm, freecharge, mobikiwi, oxygen, phonepe and so on and it also includes mobile banking applications. The study aimed at evaluating the predilection of the user in adopting digital transaction. The study is descriptive in nature. The researcher used random sample techniques to collect the data. The findings reveal that mobile applications differ with the quality of service rendered by Gpay and Phonepe. The researcher suggest the Phonepe application should focus on implementing the application should be user friendly interface and Gpay on motivating the users to feel the importance of request for money and modes of payments in the application.
VOICE BASED ATM FOR VISUALLY IMPAIRED USING ARDUINOIAEME Publication
The prototype of a voice-based ATM for visually impaired using Arduino is to help people who are blind. This uses RFID cards which contain users fingerprint encrypted on it and interacts with the users through voice commands. ATM operates when sensor detects the presence of one person in the cabin. After scanning the RFID card, it will ask to select the mode like –normal or blind. User can select the respective mode through voice input, if blind mode is selected the balance check or cash withdraw can be done through voice input. Normal mode procedure is same as the existing ATM.
IMPACT OF EMOTIONAL INTELLIGENCE ON HUMAN RESOURCE MANAGEMENT PRACTICES AMONG...IAEME Publication
There is increasing acceptability of emotional intelligence as a major factor in personality assessment and effective human resource management. Emotional intelligence as the ability to build capacity, empathize, co-operate, motivate and develop others cannot be divorced from both effective performance and human resource management systems. The human person is crucial in defining organizational leadership and fortunes in terms of challenges and opportunities and walking across both multinational and bilateral relationships. The growing complexity of the business world requires a great deal of self-confidence, integrity, communication, conflict and diversity management to keep the global enterprise within the paths of productivity and sustainability. Using the exploratory research design and 255 participants the result of this original study indicates strong positive correlation between emotional intelligence and effective human resource management. The paper offers suggestions on further studies between emotional intelligence and human capital development and recommends for conflict management as an integral part of effective human resource management.
VISUALISING AGING PARENTS & THEIR CLOSE CARERS LIFE JOURNEY IN AGING ECONOMYIAEME Publication
Our life journey, in general, is closely defined by the way we understand the meaning of why we coexist and deal with its challenges. As we develop the "inspiration economy", we could say that nearly all of the challenges we have faced are opportunities that help us to discover the rest of our journey. In this note paper, we explore how being faced with the opportunity of being a close carer for an aging parent with dementia brought intangible discoveries that changed our insight of the meaning of the rest of our life journey.
A STUDY ON THE IMPACT OF ORGANIZATIONAL CULTURE ON THE EFFECTIVENESS OF PERFO...IAEME Publication
The main objective of this study is to analyze the impact of aspects of Organizational Culture on the Effectiveness of the Performance Management System (PMS) in the Health Care Organization at Thanjavur. Organizational Culture and PMS play a crucial role in present-day organizations in achieving their objectives. PMS needs employees’ cooperation to achieve its intended objectives. Employees' cooperation depends upon the organization’s culture. The present study uses exploratory research to examine the relationship between the Organization's culture and the Effectiveness of the Performance Management System. The study uses a Structured Questionnaire to collect the primary data. For this study, Thirty-six non-clinical employees were selected from twelve randomly selected Health Care organizations at Thanjavur. Thirty-two fully completed questionnaires were received.
Living in 21st century in itself reminds all of us the necessity of police and its administration. As more and more we are entering into the modern society and culture, the more we require the services of the so called ‘Khaki Worthy’ men i.e., the police personnel. Whether we talk of Indian police or the other nation’s police, they all have the same recognition as they have in India. But as already mentioned, their services and requirements are different after the like 26th November, 2008 incidents, where they without saving their own lives has sacrificed themselves without any hitch and without caring about their respective family members and wards. In other words, they are like our heroes and mentors who can guide us from the darkness of fear, militancy, corruption and other dark sides of life and so on. Now the question arises, if Gandhi would have been alive today, what would have been his reaction/opinion to the police and its functioning? Would he have some thing different in his mind now what he had been in his mind before the partition or would he be going to start some Satyagraha in the form of some improvement in the functioning of the police administration? Really these questions or rather night mares can come to any one’s mind, when there is too much confusion is prevailing in our minds, when there is too much corruption in the society and when the polices working is also in the questioning because of one or the other case throughout the India. It is matter of great concern that we have to thing over our administration and our practical approach because the police personals are also like us, they are part and parcel of our society and among one of us, so why we all are pin pointing towards them.
A STUDY ON TALENT MANAGEMENT AND ITS IMPACT ON EMPLOYEE RETENTION IN SELECTED...IAEME Publication
The goal of this study was to see how talent management affected employee retention in the selected IT organizations in Chennai. The fundamental issue was the difficulty to attract, hire, and retain talented personnel who perform well and the gap between supply and demand of talent acquisition and retaining them within the firms. The study's main goals were to determine the impact of talent management on employee retention in IT companies in Chennai, investigate talent management strategies that IT companies could use to improve talent acquisition, performance management, career planning and formulate retention strategies that the IT firms could use. The respondents were given a structured close-ended questionnaire with the 5 Point Likert Scale as part of the study's quantitative research design. The target population consisted of 289 IT professionals. The questionnaires were distributed and collected by the researcher directly. The Statistical Package for Social Sciences (SPSS) was used to collect and analyse the questionnaire responses. Hypotheses that were formulated for the various areas of the study were tested using a variety of statistical tests. The key findings of the study suggested that talent management had an impact on employee retention. The studies also found that there is a clear link between the implementation of talent management and retention measures. Management should provide enough training and development for employees, clarify job responsibilities, provide adequate remuneration packages, and recognise employees for exceptional performance.
ATTRITION IN THE IT INDUSTRY DURING COVID-19 PANDEMIC: LINKING EMOTIONAL INTE...IAEME Publication
Globally, Millions of dollars were spent by the organizations for employing skilled Information Technology (IT) professionals. It is costly to replace unskilled employees with IT professionals possessing technical skills and competencies that aid in interconnecting the business processes. The organization’s employment tactics were forced to alter by globalization along with technological innovations as they consistently diminish to remain lean, outsource to concentrate on core competencies along with restructuring/reallocate personnel to gather efficiency. As other jobs, organizations or professions have become reasonably more appropriate in a shifting employment landscape, the above alterations trigger both involuntary as well as voluntary turnover. The employee view on jobs is also afflicted by the COVID-19 pandemic along with the employee-driven labour market. So, having effective strategies is necessary to tackle the withdrawal rate of employees. By associating Emotional Intelligence (EI) along with Talent Management (TM) in the IT industry, the rise in attrition rate was analyzed in this study. Only 303 respondents were collected out of 350 participants to whom questionnaires were distributed. From the employees of IT organizations located in Bangalore (India), the data were congregated. A simple random sampling methodology was employed to congregate data as of the respondents. Generating the hypothesis along with testing is eventuated. The effect of EI and TM along with regression analysis between TM and EI was analyzed. The outcomes indicated that employee and Organizational Performance (OP) were elevated by effective EI along with TM.
INFLUENCE OF TALENT MANAGEMENT PRACTICES ON ORGANIZATIONAL PERFORMANCE A STUD...IAEME Publication
By implementing talent management strategy, organizations would have the option to retain their skilled professionals while additionally working on their overall performance. It is the course of appropriately utilizing the ideal individuals, setting them up for future top positions, exploring and dealing with their performance, and holding them back from leaving the organization. It is employee performance that determines the success of every organization. The firm quickly obtains an upper hand over its rivals in the event that its employees having particular skills that cannot be duplicated by the competitors. Thus, firms are centred on creating successful talent management practices and processes to deal with the unique human resources. Firms are additionally endeavouring to keep their top/key staff since on the off chance that they leave; the whole store of information leaves the firm's hands. The study's objective was to determine the impact of talent management on organizational performance among the selected IT organizations in Chennai. The study recommends that talent management limitedly affects performance. On the off chance that this talent is appropriately management and implemented properly, organizations might benefit as much as possible from their maintained assets to support development and productivity, both monetarily and non-monetarily.
A STUDY OF VARIOUS TYPES OF LOANS OF SELECTED PUBLIC AND PRIVATE SECTOR BANKS...IAEME Publication
Banking regulations act of India, 1949 defines banking as “acceptance of deposits for the purpose of lending or investment from the public, repayment on demand or otherwise and withdrawable through cheques, drafts order or otherwise”, the major participants of the Indian financial system are commercial banks, the financial institution encompassing term lending institutions. Investments institutions, specialized financial institution and the state level development banks, non banking financial companies (NBFC) and other market intermediaries such has the stock brokers and money lenders are among the oldest of the certain variants of NBFC and the oldest market participants. The asset quality of banks is one of the most important indicators of their financial health. The Indian banking sector has been facing severe problems of increasing Non- Performing Assets (NPAs). The NPAs growth directly and indirectly affects the quality of assets and profitability of banks. It also shows the efficiency of banks credit risk management and the recovery effectiveness. NPA do not generate any income, whereas, the bank is required to make provisions for such as assets that why is a double edge weapon. This paper outlines the concept of quality of bank loans of different types like Housing, Agriculture and MSME loans in state Haryana of selected public and private sector banks. This study is highlighting problems associated with the role of commercial bank in financing Small and Medium Scale Enterprises (SME). The overall objective of the research was to assess the effect of the financing provisions existing for the setting up and operations of MSMEs in the country and to generate recommendations for more robust financing mechanisms for successful operation of the MSMEs, in turn understanding the impact of MSME loans on financial institutions due to NPA. There are many research conducted on the topic of Non- Performing Assets (NPA) Management, concerning particular bank, comparative study of public and private banks etc. In this paper the researcher is considering the aggregate data of selected public sector and private sector banks and attempts to compare the NPA of Housing, Agriculture and MSME loans in state Haryana of public and private sector banks. The tools used in the study are average and Anova test and variance. The findings reveal that NPA is common problem for both public and private sector banks and is associated with all types of loans either that is housing loans, agriculture loans and loans to SMES. NPAs of both public and private sector banks show the increasing trend. In 2010-11 GNPA of public and private sector were at same level it was 2% but after 2010-11 it increased in many fold and at present there is GNPA in some more than 15%. It shows the dark area of Indian banking sector.
EXPERIMENTAL STUDY OF MECHANICAL AND TRIBOLOGICAL RELATION OF NYLON/BaSO4 POL...IAEME Publication
An experiment conducted in this study found that BaSO4 changed Nylon 6's mechanical properties. By changing the weight ratios, BaSO4 was used to make Nylon 6. This Researcher looked into how hard Nylon-6/BaSO4 composites are and how well they wear. Experiments were done based on Taguchi design L9. Nylon-6/BaSO4 composites can be tested for their hardness number using a Rockwell hardness testing apparatus. On Nylon/BaSO4, the wear behavior was measured by a wear monitor, pinon-disc friction by varying reinforcement, sliding speed, and sliding distance, and the microstructure of the crack surfaces was observed by SEM. This study provides significant contributions to ultimate strength by increasing BaSO4 content up to 16% in the composites, and sliding speed contributes 72.45% to the wear rate
ROLE OF SOCIAL ENTREPRENEURSHIP IN RURAL DEVELOPMENT OF INDIA - PROBLEMS AND ...IAEME Publication
The majority of the population in India lives in villages. The village is the back bone of the country. Village or rural industries play an important role in the national economy, particularly in the rural development. Developing the rural economy is one of the key indicators towards a country’s success. Whether it be the need to look after the welfare of the farmers or invest in rural infrastructure, Governments have to ensure that rural development isn’t compromised. The economic development of our country largely depends on the progress of rural areas and the standard of living of rural masses. Village or rural industries play an important role in the national economy, particularly in the rural development. Rural entrepreneurship is based on stimulating local entrepreneurial talent and the subsequent growth of indigenous enterprises. It recognizes opportunity in the rural areas and accelerates a unique blend of resources either inside or outside of agriculture. Rural entrepreneurship brings an economic value to the rural sector by creating new methods of production, new markets, new products and generate employment opportunities thereby ensuring continuous rural development. Social Entrepreneurship has the direct and primary objective of serving the society along with the earning profits. So, social entrepreneurship is different from the economic entrepreneurship as its basic objective is not to earn profits but for providing innovative solutions to meet the society needs which are not taken care by majority of the entrepreneurs as they are in the business for profit making as a sole objective. So, the Social Entrepreneurs have the huge growth potential particularly in the developing countries like India where we have huge societal disparities in terms of the financial positions of the population. Still 22 percent of the Indian population is below the poverty line and also there is disparity among the rural & urban population in terms of families living under BPL. 25.7 percent of the rural population & 13.7 percent of the urban population is under BPL which clearly shows the disparity of the poor people in the rural and urban areas. The need to develop social entrepreneurship in agriculture is dictated by a large number of social problems. Such problems include low living standards, unemployment, and social tension. The reasons that led to the emergence of the practice of social entrepreneurship are the above factors. The research problem lays upon disclosing the importance of role of social entrepreneurship in rural development of India. The paper the tendencies of social entrepreneurship in India, to present successful examples of such business for providing recommendations how to improve situation in rural areas in terms of social entrepreneurship development. Indian government has made some steps towards development of social enterprises, social entrepreneurship, and social in- novation, but a lot remains to be improved.
OPTIMAL RECONFIGURATION OF POWER DISTRIBUTION RADIAL NETWORK USING HYBRID MET...IAEME Publication
Distribution system is a critical link between the electric power distributor and the consumers. Most of the distribution networks commonly used by the electric utility is the radial distribution network. However in this type of network, it has technical issues such as enormous power losses which affect the quality of the supply. Nowadays, the introduction of Distributed Generation (DG) units in the system help improve and support the voltage profile of the network as well as the performance of the system components through power loss mitigation. In this study network reconfiguration was done using two meta-heuristic algorithms Particle Swarm Optimization and Gravitational Search Algorithm (PSO-GSA) to enhance power quality and voltage profile in the system when simultaneously applied with the DG units. Backward/Forward Sweep Method was used in the load flow analysis and simulated using the MATLAB program. Five cases were considered in the Reconfiguration based on the contribution of DG units. The proposed method was tested using IEEE 33 bus system. Based on the results, there was a voltage profile improvement in the system from 0.9038 p.u. to 0.9594 p.u.. The integration of DG in the network also reduced power losses from 210.98 kW to 69.3963 kW. Simulated results are drawn to show the performance of each case.
APPLICATION OF FRUGAL APPROACH FOR PRODUCTIVITY IMPROVEMENT - A CASE STUDY OF...IAEME Publication
Manufacturing industries have witnessed an outburst in productivity. For productivity improvement manufacturing industries are taking various initiatives by using lean tools and techniques. However, in different manufacturing industries, frugal approach is applied in product design and services as a tool for improvement. Frugal approach contributed to prove less is more and seems indirectly contributing to improve productivity. Hence, there is need to understand status of frugal approach application in manufacturing industries. All manufacturing industries are trying hard and putting continuous efforts for competitive existence. For productivity improvements, manufacturing industries are coming up with different effective and efficient solutions in manufacturing processes and operations. To overcome current challenges, manufacturing industries have started using frugal approach in product design and services. For this study, methodology adopted with both primary and secondary sources of data. For primary source interview and observation technique is used and for secondary source review has done based on available literatures in website, printed magazines, manual etc. An attempt has made for understanding application of frugal approach with the study of manufacturing industry project. Manufacturing industry selected for this project study is Mahindra and Mahindra Ltd. This paper will help researcher to find the connections between the two concepts productivity improvement and frugal approach. This paper will help to understand significance of frugal approach for productivity improvement in manufacturing industry. This will also help to understand current scenario of frugal approach in manufacturing industry. In manufacturing industries various process are involved to deliver the final product. In the process of converting input in to output through manufacturing process productivity plays very critical role. Hence this study will help to evolve status of frugal approach in productivity improvement programme. The notion of frugal can be viewed as an approach towards productivity improvement in manufacturing industries.
A MULTIPLE – CHANNEL QUEUING MODELS ON FUZZY ENVIRONMENTIAEME Publication
In this paper, we investigated a queuing model of fuzzy environment-based a multiple channel queuing model (M/M/C) ( /FCFS) and study its performance under realistic conditions. It applies a nonagonal fuzzy number to analyse the relevant performance of a multiple channel queuing model (M/M/C) ( /FCFS). Based on the sub interval average ranking method for nonagonal fuzzy number, we convert fuzzy number to crisp one. Numerical results reveal that the efficiency of this method. Intuitively, the fuzzy environment adapts well to a multiple channel queuing models (M/M/C) ( /FCFS) are very well.
zkStudyClub - LatticeFold: A Lattice-based Folding Scheme and its Application...Alex Pruden
Folding is a recent technique for building efficient recursive SNARKs. Several elegant folding protocols have been proposed, such as Nova, Supernova, Hypernova, Protostar, and others. However, all of them rely on an additively homomorphic commitment scheme based on discrete log, and are therefore not post-quantum secure. In this work we present LatticeFold, the first lattice-based folding protocol based on the Module SIS problem. This folding protocol naturally leads to an efficient recursive lattice-based SNARK and an efficient PCD scheme. LatticeFold supports folding low-degree relations, such as R1CS, as well as high-degree relations, such as CCS. The key challenge is to construct a secure folding protocol that works with the Ajtai commitment scheme. The difficulty, is ensuring that extracted witnesses are low norm through many rounds of folding. We present a novel technique using the sumcheck protocol to ensure that extracted witnesses are always low norm no matter how many rounds of folding are used. Our evaluation of the final proof system suggests that it is as performant as Hypernova, while providing post-quantum security.
Paper Link: https://eprint.iacr.org/2024/257
Digital Banking in the Cloud: How Citizens Bank Unlocked Their MainframePrecisely
Inconsistent user experience and siloed data, high costs, and changing customer expectations – Citizens Bank was experiencing these challenges while it was attempting to deliver a superior digital banking experience for its clients. Its core banking applications run on the mainframe and Citizens was using legacy utilities to get the critical mainframe data to feed customer-facing channels, like call centers, web, and mobile. Ultimately, this led to higher operating costs (MIPS), delayed response times, and longer time to market.
Ever-changing customer expectations demand more modern digital experiences, and the bank needed to find a solution that could provide real-time data to its customer channels with low latency and operating costs. Join this session to learn how Citizens is leveraging Precisely to replicate mainframe data to its customer channels and deliver on their “modern digital bank” experiences.
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdfChart Kalyan
A Mix Chart displays historical data of numbers in a graphical or tabular form. The Kalyan Rajdhani Mix Chart specifically shows the results of a sequence of numbers over different periods.
Digital Marketing Trends in 2024 | Guide for Staying AheadWask
https://www.wask.co/ebooks/digital-marketing-trends-in-2024
Feeling lost in the digital marketing whirlwind of 2024? Technology is changing, consumer habits are evolving, and staying ahead of the curve feels like a never-ending pursuit. This e-book is your compass. Dive into actionable insights to handle the complexities of modern marketing. From hyper-personalization to the power of user-generated content, learn how to build long-term relationships with your audience and unlock the secrets to success in the ever-shifting digital landscape.
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
Programming Foundation Models with DSPy - Meetup SlidesZilliz
Prompting language models is hard, while programming language models is easy. In this talk, I will discuss the state-of-the-art framework DSPy for programming foundation models with its powerful optimizers and runtime constraint system.
Let's Integrate MuleSoft RPA, COMPOSER, APM with AWS IDP along with Slackshyamraj55
Discover the seamless integration of RPA (Robotic Process Automation), COMPOSER, and APM with AWS IDP enhanced with Slack notifications. Explore how these technologies converge to streamline workflows, optimize performance, and ensure secure access, all while leveraging the power of AWS IDP and real-time communication via Slack notifications.
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
Lambda, Elastic Beanstalk, Lightsail, Amplify, S3 (and more!) can each host websites + APIs. But which one should we choose?
Which one is cheapest? Which one is fastest? Which one will scale to meet our needs?
Join me in this session as we dive into each AWS hosting service to determine which one is best for your scenario and explain why!
Fueling AI with Great Data with Airbyte WebinarZilliz
This talk will focus on how to collect data from a variety of sources, leveraging this data for RAG and other GenAI use cases, and finally charting your course to productionalization.
Driving Business Innovation: Latest Generative AI Advancements & Success StorySafe Software
Are you ready to revolutionize how you handle data? Join us for a webinar where we’ll bring you up to speed with the latest advancements in Generative AI technology and discover how leveraging FME with tools from giants like Google Gemini, Amazon, and Microsoft OpenAI can supercharge your workflow efficiency.
During the hour, we’ll take you through:
Guest Speaker Segment with Hannah Barrington: Dive into the world of dynamic real estate marketing with Hannah, the Marketing Manager at Workspace Group. Hear firsthand how their team generates engaging descriptions for thousands of office units by integrating diverse data sources—from PDF floorplans to web pages—using FME transformers, like OpenAIVisionConnector and AnthropicVisionConnector. This use case will show you how GenAI can streamline content creation for marketing across the board.
Ollama Use Case: Learn how Scenario Specialist Dmitri Bagh has utilized Ollama within FME to input data, create custom models, and enhance security protocols. This segment will include demos to illustrate the full capabilities of FME in AI-driven processes.
Custom AI Models: Discover how to leverage FME to build personalized AI models using your data. Whether it’s populating a model with local data for added security or integrating public AI tools, find out how FME facilitates a versatile and secure approach to AI.
We’ll wrap up with a live Q&A session where you can engage with our experts on your specific use cases, and learn more about optimizing your data workflows with AI.
This webinar is ideal for professionals seeking to harness the power of AI within their data management systems while ensuring high levels of customization and security. Whether you're a novice or an expert, gain actionable insights and strategies to elevate your data processes. Join us to see how FME and AI can revolutionize how you work with data!
Introduction of Cybersecurity with OSS at Code Europe 2024Hiroshi SHIBATA
I develop the Ruby programming language, RubyGems, and Bundler, which are package managers for Ruby. Today, I will introduce how to enhance the security of your application using open-source software (OSS) examples from Ruby and RubyGems.
The first topic is CVE (Common Vulnerabilities and Exposures). I have published CVEs many times. But what exactly is a CVE? I'll provide a basic understanding of CVEs and explain how to detect and handle vulnerabilities in OSS.
Next, let's discuss package managers. Package managers play a critical role in the OSS ecosystem. I'll explain how to manage library dependencies in your application.
I'll share insights into how the Ruby and RubyGems core team works to keep our ecosystem safe. By the end of this talk, you'll have a better understanding of how to safeguard your code.
Your One-Stop Shop for Python Success: Top 10 US Python Development Providersakankshawande
Simplify your search for a reliable Python development partner! This list presents the top 10 trusted US providers offering comprehensive Python development services, ensuring your project's success from conception to completion.
Trusted Execution Environment for Decentralized Process MiningLucaBarbaro3
Presentation of the paper "Trusted Execution Environment for Decentralized Process Mining" given during the CAiSE 2024 Conference in Cyprus on June 7, 2024.