In this study, the effects of carbon black amount on fracture and wear behaviors of AA6061-carbon black metal matrix composites produced by stir casting route were investigated. Wear tests were performed in a pin on type wear apparatus under different loads of 10, 20, 30 N with different sliding speeds of 2, 3 and 4 m/s, at three different sliding distances of 500, 750 and 1000 m. The design of experiments was carried out as per Taguchi technique. Wear rate function was determined in terms of volume fraction, normal load, sliding speed and sliding distance. It was found that there was a good agreement between the theoretical and the experimental value of wear rate. Maximum sliding wear of 68.72% was attributed sliding distance. Sliding wear resistance increases by 42.56% for AA6061/30%CB metal matrix composites as compared to the matrix alloy AA6061
Prediction Models for Sliding Wear of AA3003/Al2O3 CompositesIJERA Editor
In the present work, the AA3003/Al2O3 metal matrix composites were manufactured at 10% and 30% volume
fractions of Al2O3. The composites were wear tested at different levels of normal load, sliding speed and sliding
distances. The microstructure of worn surfaces pertaining to AA3003/ Al2O3 composite reveals the fracture of
AA3033 alloy matrix as well as the detachment of Al2O3 particles from the matrix.
Experimental and Numerical Assessment of Crash Behavior of Welded Thin Wall R...IDES Editor
The crash behavior of Cold Rolled Mild Steel
(CRMS) closed form thin section produced by stitch welding
at periodic intervals of length was studied by conducting axial
compressive tests at loading velocities of 5 mm/min and 6000
mm/min. The deformation shape, peak forces and energy
absorption capacity of the sections estimated numerically
showed a good correlation with the experimental data.
The Effect of Direct- and Cross-Rolling on Mechanical Properties and Microstr...Kaveh Rahimi Mamaghani
Severely deformed commercial pure aluminum sheets by constrained groove pressing are direct and crossrolled.
The grain size evolution and dislocation density during rolling are studied using Williamson-Hall
analysis on x-ray diffraction patterns of the deformed samples. These results and optical microscopy
observations show that subsequent direct or cross-rolling of constrained groove pressed aluminum can
produce elongated fine grains. The minimum crystallite size is achieved after cross-rolling of constrained
groove pressed samples. By direct-rolling or cross-rolling of annealed sheet, the maximum intensity in x-ray
diffraction patterns remains on (200) like annealed aluminum but direct-rolling or cross-rolling of constrained
groove pressed sheets changes the maximum intensity from (111) for constrained groove pressed
sheets to (220). Also, mechanical properties are studied using tensile test and hardness measurement. The
results show that cross-rolling on constrained groove pressed samples is more effective than direct-rolling in
mechanical properties improvement.
Prediction Models for Sliding Wear of AA3003/Al2O3 CompositesIJERA Editor
In the present work, the AA3003/Al2O3 metal matrix composites were manufactured at 10% and 30% volume
fractions of Al2O3. The composites were wear tested at different levels of normal load, sliding speed and sliding
distances. The microstructure of worn surfaces pertaining to AA3003/ Al2O3 composite reveals the fracture of
AA3033 alloy matrix as well as the detachment of Al2O3 particles from the matrix.
Experimental and Numerical Assessment of Crash Behavior of Welded Thin Wall R...IDES Editor
The crash behavior of Cold Rolled Mild Steel
(CRMS) closed form thin section produced by stitch welding
at periodic intervals of length was studied by conducting axial
compressive tests at loading velocities of 5 mm/min and 6000
mm/min. The deformation shape, peak forces and energy
absorption capacity of the sections estimated numerically
showed a good correlation with the experimental data.
The Effect of Direct- and Cross-Rolling on Mechanical Properties and Microstr...Kaveh Rahimi Mamaghani
Severely deformed commercial pure aluminum sheets by constrained groove pressing are direct and crossrolled.
The grain size evolution and dislocation density during rolling are studied using Williamson-Hall
analysis on x-ray diffraction patterns of the deformed samples. These results and optical microscopy
observations show that subsequent direct or cross-rolling of constrained groove pressed aluminum can
produce elongated fine grains. The minimum crystallite size is achieved after cross-rolling of constrained
groove pressed samples. By direct-rolling or cross-rolling of annealed sheet, the maximum intensity in x-ray
diffraction patterns remains on (200) like annealed aluminum but direct-rolling or cross-rolling of constrained
groove pressed sheets changes the maximum intensity from (111) for constrained groove pressed
sheets to (220). Also, mechanical properties are studied using tensile test and hardness measurement. The
results show that cross-rolling on constrained groove pressed samples is more effective than direct-rolling in
mechanical properties improvement.
Behaviour Analysis of Corroded Wires Based on Statistical ModelsIJERDJOURNAL
ABSTRACT: Steel wires are the primary components of a lifting wire rope. The behaviour of a wire governs the behaviour of the whole of the cable. The physico-chemical processes like rates of degradation due to the environment (corrosion, etc.) are different for each layer, external layers being more exposed. The analysis of steel wires behaviour is traditionally based on statistical models describing the variability of its properties. For this purpose a statistical study was carried out on two populations of healthy and corroded wires by applying the Student distribution to select the most reliable results and the Weibull distribution to define the survival probability and the failure probability.
Forming Limit Prediction of High Tensile Strength Steel using FEA SimulationIJERD Editor
Forming limit prediction of High Tensile Strength Steel (HTSS) sheet was carried out by using finite element analysis. JSTAMP/NV was used in the finite element analysis. Thickness of HTSS specimen was 1.0mm, and the length was 120mm.And the width was varied from 20mm to 80mm. Stretching test was operated by Erichsen test. In this study, the forming limit prediction method for predicting the localized necking before the fracture was proposed.FLD of HTSS was compared between experimental results and analytical results. Forming limit diagrams (FLD) obtained by FEAagreed well with the FLD obtained by experiment.
Stress Analysis of Automotive Chassis with Various ThicknessesIOSR Journals
Abstract : This paper presents, stress analysis of a ladder type low loader truck chassis structure consisting of
C-beams design for application of 7.5 tonne was performed by using FEM. The commercial finite element
package CATIA version 5 was used for the solution of the problem. To reduce the expenses of the chassis of the
trucks, the chassis structure design should be changed or the thickness should be decreased. Also determination
of the stresses of a truck chassis before manufacturing is important due to the design improvement. In order to
achieve a reduction in the magnitude of stress at critical point of the chassis frame, side member thickness,
cross member thickness and position of cross member from rear end were varied. Numerical results showed that
if the thickness change is not possible, changing the position of cross member may be a good alternative.
Computed results are then compared to analytical calculation, where it is found that the maximum deflection
agrees well with theoretical approximation but varies on the magnitude aspect.
Keywords - Stress analysis, fatigue life prediction and finite element method etc.
Microstructure and sliding wear behaviour of stircast ti gr and ti –fe metal ...eSAT Journals
Abstract
The type and weight percentage of reinforcement play important role in microstructure and sliding wear resistance of the composite. The low melting point nonferrous metal matrix composites Tin- Graphite and Tin-Iron metal matrix composites are cast by the liquid stir casting technique with up to 5 and 15 weight percentages of carbon and iron respectively as reinforcements. The sliding wear characteristics are important if the specimens are used as bearing materials for light duty applications. The specimens are polished and etched for microstructure examination to verify the homogeneous dispersion of reinforcements in the matrix. The microstructure examination reveals the uniform dispersion of reinforcements in the matrix. The specimens are also subjected to dry sliding wear on Pin –on –disc wear testing equipment and the weight loss method technique was used to find specific wear rate at the respective sliding distance. The cumulative specific wear rates and friction coefficients are plotted against sliding distance. The specific wear rate curves show the necessity of an optimum weight percentage of reinforcements in the composite to reduce the wear rate. The frictional coefficient versus sliding distance curves show the decrease in frictional force at higher sliding distances as the weight percentage of particulates increases. At higher sliding distances, in case of the Tin –Graphite composite the surface of the specimen observed to be smooth which makes the graphite particles to expose as flakes and act as solid lubricant to reduce wear. The scanning electron microscope image of the surface which is normal to the sliding surface also studied to verify the flake formation during wear. Both mild and severe wear regions are observed.
Keywords: particulate, metal matrix composites, stir casting, specific wear rate, friction coefficient.
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.
Vibrational Analysis Of Cracked Rod Having Circumferential Crack IDES Editor
The frequency ratio of torsional vibration of a rod without crack and of rod with crack subjected to torque at the free end for various crack depth and varying crack location is investigated. It is found that even a cracked of small depth is
dangerous at the fixed end, also as the crack depth is increases more than 50% of diameter of rod there is a considerable drop in natural frequency of the rod .
Shear Field Size Effect on Determining the Shear Modulus of Glulam beam - Cri...CrimsonPublishersRDMS
Shear Field Size Effect on Determining the Shear Modulus of Glulam beam by Niaz Gharavi* in Crimson Publishers: Peer Reviewed Material Science Journals
The Comparison of Properties of Tinplates during Uniaxial and Biaxial Stresstheijes
The majority of thin steel sheets is used to make of food covers, cans, capsules and other products, which are produced by metal forming. Concerning considerable changes in production of tinplates and still higher requests on their properties there is requirement to use such methods on their evaluation, which are able to determine especially mechanical and plastic properties of sheets quickly and with the low costs. Following of present know-how there were developed new testing methods, which correspond more to steel sheets stress during technological treatment (concerning their stress-strain state). In the contribution we deal with the comparison of properties of tinplates during uniaxial tensile test and biaxial tensile test.
An Experimental Investigation into the Grindability Aspects of Newly Develope...IDES Editor
Ceramics are getting widely used in many engineering applications. These ceramic materials need to be ground. Unfortunately, the ground ceramic components mostly contain surface/subsurface damages. To minimize the grinding induced damages selection of appropriate grinding process parameters is very important. Ceramic composite material (AlSiTi) has been selected in the present study to investigate its grindability. This research work deals with the analysis of the process parameters such as wheel speed, table feed and infeed as influential factors, on the force components, grinding specific energy and surface roughness values based
on Taguchi’s experimental design method. Scanning electron microscopy (SEM) has been used to analyze the subsurface damages. The result provides valuable insight into the grindability aspects of the composite ceramic (AlSiTi).
SIMULATION OF SOIL TEMPERATURE VARIATION FOR GEOTHERMAL APPLICATIONS IAEME Publication
This paper aims to predict ground temperature variation with depth for time variantambient air temperature and solar radiation data for Jamshedpur, India. Fourier series and
CFD techniques have been employed to determine diurnal and annual temperature variationfor the hottest and the coldest day of the year 2015.The diurnal temperature variation is up to
0.2m depth of soil whereas annual temperature variation isupto 3m depth.
ANALYSIS OF PROCESS PARAMETERS IN MILLING OF GLASS FIBRE REINFORCED PLASTIC C...IAEME Publication
Milling is one of the most important machining processes in manufacturing parts made out
of FRPs. Milling is a very versatile process capable of producing simple two dimensional flat
shapes to complex three dimensional interlaced surface configurations, in which a rotating,
multi-tooth cutter removes material while traveling along various axes with respect to the work
piece. However, unlike the milling of metals which is characterized by high material removal
rates, milling of FRPs is conducted at much lower scale. The reason for this is that FRP
components are largely made near net shape and any subsequent milling is limited mainly tode-burring and trimming as well as to achieving contourshapeaccuracy. Milling compositematerials are significantly affected by the tendency of these materials to delaminate under the
action of machining forces, cutting force, feed force and depth force respectively.Quality surface milling of Glass Fibre reinforced Plastic materials present variety ofissues, such milling is one of the foremost oftentimes used material removal processes in
machining of FRPs to produce a well-defined surface finish and has surface delaminationrelated to the characteristics of the material and therefore the cutting parameters used. Thesurface quality and dimensional precision greatly have an effect on the elements throughout
their useful life, especially in cases wherever the elements come in contact with differentelements or materials. Optimization of machining parameters is a necessary step in machining.
This project presents a new approach for optimizing the machining parameters on end millingof glass-fibre reinforced plastic composites. Optimization of machining parameters was doneby Taguchi method in milling experiments were conducted for Glass fibre reinforced plastic
composite plates using solid carbide end mills with various helix angles. The parameters ofmachining such as, Fibre orientation angle, spindle speed, feed rate and helix angle are
Analysis of Process Parameters in Milling of Glass Fibre Reinforced Plastic Composites
http://www.iaeme.com/IJMET/index.asp 150 editor@iaeme.com
optimized by multi-response concerns particularly surface roughness and machining force the
optimum levels of parameters have been investigated by using Taguchi method.
Behaviour Analysis of Corroded Wires Based on Statistical ModelsIJERDJOURNAL
ABSTRACT: Steel wires are the primary components of a lifting wire rope. The behaviour of a wire governs the behaviour of the whole of the cable. The physico-chemical processes like rates of degradation due to the environment (corrosion, etc.) are different for each layer, external layers being more exposed. The analysis of steel wires behaviour is traditionally based on statistical models describing the variability of its properties. For this purpose a statistical study was carried out on two populations of healthy and corroded wires by applying the Student distribution to select the most reliable results and the Weibull distribution to define the survival probability and the failure probability.
Forming Limit Prediction of High Tensile Strength Steel using FEA SimulationIJERD Editor
Forming limit prediction of High Tensile Strength Steel (HTSS) sheet was carried out by using finite element analysis. JSTAMP/NV was used in the finite element analysis. Thickness of HTSS specimen was 1.0mm, and the length was 120mm.And the width was varied from 20mm to 80mm. Stretching test was operated by Erichsen test. In this study, the forming limit prediction method for predicting the localized necking before the fracture was proposed.FLD of HTSS was compared between experimental results and analytical results. Forming limit diagrams (FLD) obtained by FEAagreed well with the FLD obtained by experiment.
Stress Analysis of Automotive Chassis with Various ThicknessesIOSR Journals
Abstract : This paper presents, stress analysis of a ladder type low loader truck chassis structure consisting of
C-beams design for application of 7.5 tonne was performed by using FEM. The commercial finite element
package CATIA version 5 was used for the solution of the problem. To reduce the expenses of the chassis of the
trucks, the chassis structure design should be changed or the thickness should be decreased. Also determination
of the stresses of a truck chassis before manufacturing is important due to the design improvement. In order to
achieve a reduction in the magnitude of stress at critical point of the chassis frame, side member thickness,
cross member thickness and position of cross member from rear end were varied. Numerical results showed that
if the thickness change is not possible, changing the position of cross member may be a good alternative.
Computed results are then compared to analytical calculation, where it is found that the maximum deflection
agrees well with theoretical approximation but varies on the magnitude aspect.
Keywords - Stress analysis, fatigue life prediction and finite element method etc.
Microstructure and sliding wear behaviour of stircast ti gr and ti –fe metal ...eSAT Journals
Abstract
The type and weight percentage of reinforcement play important role in microstructure and sliding wear resistance of the composite. The low melting point nonferrous metal matrix composites Tin- Graphite and Tin-Iron metal matrix composites are cast by the liquid stir casting technique with up to 5 and 15 weight percentages of carbon and iron respectively as reinforcements. The sliding wear characteristics are important if the specimens are used as bearing materials for light duty applications. The specimens are polished and etched for microstructure examination to verify the homogeneous dispersion of reinforcements in the matrix. The microstructure examination reveals the uniform dispersion of reinforcements in the matrix. The specimens are also subjected to dry sliding wear on Pin –on –disc wear testing equipment and the weight loss method technique was used to find specific wear rate at the respective sliding distance. The cumulative specific wear rates and friction coefficients are plotted against sliding distance. The specific wear rate curves show the necessity of an optimum weight percentage of reinforcements in the composite to reduce the wear rate. The frictional coefficient versus sliding distance curves show the decrease in frictional force at higher sliding distances as the weight percentage of particulates increases. At higher sliding distances, in case of the Tin –Graphite composite the surface of the specimen observed to be smooth which makes the graphite particles to expose as flakes and act as solid lubricant to reduce wear. The scanning electron microscope image of the surface which is normal to the sliding surface also studied to verify the flake formation during wear. Both mild and severe wear regions are observed.
Keywords: particulate, metal matrix composites, stir casting, specific wear rate, friction coefficient.
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.
Vibrational Analysis Of Cracked Rod Having Circumferential Crack IDES Editor
The frequency ratio of torsional vibration of a rod without crack and of rod with crack subjected to torque at the free end for various crack depth and varying crack location is investigated. It is found that even a cracked of small depth is
dangerous at the fixed end, also as the crack depth is increases more than 50% of diameter of rod there is a considerable drop in natural frequency of the rod .
Shear Field Size Effect on Determining the Shear Modulus of Glulam beam - Cri...CrimsonPublishersRDMS
Shear Field Size Effect on Determining the Shear Modulus of Glulam beam by Niaz Gharavi* in Crimson Publishers: Peer Reviewed Material Science Journals
The Comparison of Properties of Tinplates during Uniaxial and Biaxial Stresstheijes
The majority of thin steel sheets is used to make of food covers, cans, capsules and other products, which are produced by metal forming. Concerning considerable changes in production of tinplates and still higher requests on their properties there is requirement to use such methods on their evaluation, which are able to determine especially mechanical and plastic properties of sheets quickly and with the low costs. Following of present know-how there were developed new testing methods, which correspond more to steel sheets stress during technological treatment (concerning their stress-strain state). In the contribution we deal with the comparison of properties of tinplates during uniaxial tensile test and biaxial tensile test.
An Experimental Investigation into the Grindability Aspects of Newly Develope...IDES Editor
Ceramics are getting widely used in many engineering applications. These ceramic materials need to be ground. Unfortunately, the ground ceramic components mostly contain surface/subsurface damages. To minimize the grinding induced damages selection of appropriate grinding process parameters is very important. Ceramic composite material (AlSiTi) has been selected in the present study to investigate its grindability. This research work deals with the analysis of the process parameters such as wheel speed, table feed and infeed as influential factors, on the force components, grinding specific energy and surface roughness values based
on Taguchi’s experimental design method. Scanning electron microscopy (SEM) has been used to analyze the subsurface damages. The result provides valuable insight into the grindability aspects of the composite ceramic (AlSiTi).
SIMULATION OF SOIL TEMPERATURE VARIATION FOR GEOTHERMAL APPLICATIONS IAEME Publication
This paper aims to predict ground temperature variation with depth for time variantambient air temperature and solar radiation data for Jamshedpur, India. Fourier series and
CFD techniques have been employed to determine diurnal and annual temperature variationfor the hottest and the coldest day of the year 2015.The diurnal temperature variation is up to
0.2m depth of soil whereas annual temperature variation isupto 3m depth.
ANALYSIS OF PROCESS PARAMETERS IN MILLING OF GLASS FIBRE REINFORCED PLASTIC C...IAEME Publication
Milling is one of the most important machining processes in manufacturing parts made out
of FRPs. Milling is a very versatile process capable of producing simple two dimensional flat
shapes to complex three dimensional interlaced surface configurations, in which a rotating,
multi-tooth cutter removes material while traveling along various axes with respect to the work
piece. However, unlike the milling of metals which is characterized by high material removal
rates, milling of FRPs is conducted at much lower scale. The reason for this is that FRP
components are largely made near net shape and any subsequent milling is limited mainly tode-burring and trimming as well as to achieving contourshapeaccuracy. Milling compositematerials are significantly affected by the tendency of these materials to delaminate under the
action of machining forces, cutting force, feed force and depth force respectively.Quality surface milling of Glass Fibre reinforced Plastic materials present variety ofissues, such milling is one of the foremost oftentimes used material removal processes in
machining of FRPs to produce a well-defined surface finish and has surface delaminationrelated to the characteristics of the material and therefore the cutting parameters used. Thesurface quality and dimensional precision greatly have an effect on the elements throughout
their useful life, especially in cases wherever the elements come in contact with differentelements or materials. Optimization of machining parameters is a necessary step in machining.
This project presents a new approach for optimizing the machining parameters on end millingof glass-fibre reinforced plastic composites. Optimization of machining parameters was doneby Taguchi method in milling experiments were conducted for Glass fibre reinforced plastic
composite plates using solid carbide end mills with various helix angles. The parameters ofmachining such as, Fibre orientation angle, spindle speed, feed rate and helix angle are
Analysis of Process Parameters in Milling of Glass Fibre Reinforced Plastic Composites
http://www.iaeme.com/IJMET/index.asp 150 editor@iaeme.com
optimized by multi-response concerns particularly surface roughness and machining force the
optimum levels of parameters have been investigated by using Taguchi method.
THERMAL PERFORMANCE AND ECONOMICS ANALYSIS OF DOUBLE FLOW PACKED BED SOLAR AI...IAEME Publication
Solar air heater is a type of heat exchanger that transforms solar radiation energy into heat energy. Conventional solar air heaters have poor thermal performance due to high heat losses and low convective heat transfer coefficient between absorber and flowing air. Attempts have been made to improve the thermal performance of conventional solar air heater by employing various design and flow arrangements. Double flow solar air heater with packing is an important and effective design improvement that has been proposed to improve the thermal performance. This paper presents the performance and economic analysis of double flow solar air collector with and without packing in the duct. Effect of various parameters on the thermal performance and pressure drop characteristics has been studied experimentally. The study concludes that double flow arrangement with packing is economical and having short payback period. Also, the thermal performance of double flow solar air heater with packing in upper duct is significantly higher compared to double flow solar air heater without packing and conventional solar air heater.
THERMAL ANALYSIS OF SHELL AND TUBE TYPE HEAT EXCHANGER TO DEMONSTRATE THE HEA...IAEME Publication
This paper consists of a simplified model of shell and tube type heat exchanger having both interacting mediums as water and steam. In this paper we have first designed a shell and tube heat exchanger to heat water from 40℃ to 70℃ by steam at 140℃ temperature. The design has been done using Kern’s method in order to obtain various dimensions such as shell, tubes, baffles etc. A computer model using CATIA V5 has been developed by using the derived dimensions of heat exchanger. Then the thermal simulation in ANSYS has been performed by applying several thermal loads on different faces and edges. The heat transfer capabilities of several thermal materials have been compared by assigning different materials.
Nikola Tesla invented this bladeless turbine (patented 1913) originally, which uses boundary layer
effect to run and not impingement of fluid upon the blades as in conventional. There are number of discs
sequentially mounted on a shaft and the fluid is made to flow in a tangential direction with considerable
pressure onto the discs with the help of an efficient nozzle, then follows a spiral path towards the centre
and exits axially. The discs rotate due to the basic properties of the fluid – viscosity and adhesion, as
momentum is transferred via this forces and kinetic energy of fluid is converted into the rotational energy
of the shaft. Many researchers have studied this concept and given various improvements with proofs
basically into two ways – one suggesting modifying the design of various components involved while
others to change the parameters involved.
STUDIES ON EXTRACTION METHODS OF CHITIN FROM CRAB SHELL AND INVESTIGATION OF ...IAEME Publication
This paper describes the most common methods for recovery of chitin from crab shell. Deproteinization, demineralization and deacetylation are the main processes for the extraction of chitin and chitosan. The mechanical properties were investigated to recognize their mechanical applications. Chitin is the most widespread biopolymer in nature, after cellulose. It has great economic value because of their biological activities and their industrial and biomedical applications. Chitin can be extracted from three sources, namely crustaceans, insects and microorganisms. However, the main commercial sources are shells of shrimps, crabs, lobsters and krill that are supplied in large quantities by the shellfish processing industries. Extraction of chitin involves two steps, demineralization and deproteinisation, which can be processed by two methods, chemical or biological. Acids and bases are required for chemical method, while the biological method involves microorganisms. The mechanical properties of isolated crab chitin are highly susceptible to the effects of hydration. Philippine blue swimming crab were used for the extraction of chitin. The extracted chitin was used to form polymer films at different conditions. Polymer films were also formed from commercially acquired chitin. It was observed that the films prepared at different conditions have greater ultimate tensile strengths as compared to the commercially-available films..The Chitin discussed in the present study is analyzed mechanically. Thus ensuring the extracted Chitin and Chitosan could be considered for further applications. This study therefore, intends to extract and investigate the mechanical performance of chitin from crab shell.
Modeling Tribological Contacts in Wind Turbine GearboxesSentient Science
Sentient Science outlines how we build a multi-physics solver for rolling contact and fatigue modeling that predicts where both long and short crack nucleate and initiate before system failure occurs.
EXPERIMENTAL INVESTIGATION AND DESIGN OPTIMIZATION OF END MILLING PROCESS PAR...IAEME Publication
Monel 400 is a precipitation hard enable, Nickel copper alloy with corrosion resistance. Typical applications for Monel 400 include fasteners, springs, chain, pump, impeller and Valve components due their excellent Mechanical properties. The continuous development of carbide milling cutter and its coating technology are great concern with manufacturing Environment. CBN coating play an important role in milling cutter to produce better surface finish and tool life with minimum cost. In this paper deals investigation of End Milling operation of Monel 400 plates with different process parameters like spindle speed, feed rate and depth of cut and to find optimal machining conditions of minimum surface roughness(Ra), Material removal designed and conducted based on design of Experiments using L9 orthogonal array and Optimized by Taguchi Method.
DESIGN OF CARTESIAN TYPE AUTOMATED GLASS CLEANING SYSTEM FOR SKYSCRAPER’SIAEME Publication
Now a days it’s been a trendy way to have high level of buildings and skyscraper’s with glasses as front elevations. It is really acceptable that buildings with glasses provide good natural light and it also improves the outlook of the skyscrapers. But when it comes to the cleaning of all those glasses till to a particular height is fine manually, when we keep on going to high level the danger of the humans who are cleaning it keeps on increases and it’s really a risking duty for the maintenance department. Now we took this problem and started working to find a suitable solution which is easy to operate and economical. So here we are proposing a design that can be used to clean the glasses attach to the building. In this paper we are presenting the design of a system that can be used in cleaning of glasses, covering a limited area and then the same system can be used to complete the work by simply repositioning the entire system which has a movable base along the glass wall. In this manner we can clean the entire glass attached to the Skyscraper’s and buildings with in short time.
CLEAN COAL TECHNOLOGIES, CHALLENGES AND FUTURE SCOPEIAEME Publication
Clean Coal Technologies (CCT) are technological developments that lead to efficient combustion of coal with reduced emissions. It is achieved through combustion or gasification. A combination of clean coal technologies is necessary to achieve maximum power with enhanced energy conversion. The efficiency and quality of the power generation depends upon the coal content. Clean coal technologies, challenges and the future scope are summarized in this paper.
ESTIMATION AND ANALYSIS OF CYCLE EFFICIENCY FOR SHELL AND TUBE HEAT EXCHANGER...IAEME Publication
Shell and tube Heat exchanger (STHE) is one of the most common and widely used energy transporter suited for domestic usages as well as industrial applications. In this paper, we consider shell and tube heat exchanger as a device with known input and output parameters. This work utilizes imperative design constraints like tube configuration, fluids, surface and temperature (constant magnitude) as input parameters and energetic cycle efficiency considered as desired output parameter depicting performance of the device. The model was trained and tested by proposed Genetic algorithm (GA) technique. This entire computational procedure is implemented in MATLAB platform.
MHD CASSON FLUID FLOW AND HEAT TRANSFER WITH PST AND PHF HEATING CONDITIONS D...IAEME Publication
In the present paper two-dimensional flow of non-Newtonian MHD flow of Casson fluid heat transfer with PST & PHF is considered. Using Nevier Stoke’s Equations of Motion the momentum and energy equations of Casson fluid are derived. These governing equations of motion and temperature are non-linear partial differential equations which are tedious to solve as they are, hence these partial differential equations are converted into Ordinary differential equations using suitable similarity transformations. These ODE’s are then solved numerically by the efficient Runge Kutta Fehlberg method. Effects of various governing parameters on the flow and heat transfer profiles are analyzed. Further the numerical Values of Wall temperature and Wall temperature Profiles are calculated and discussed in detail through graphs in both the cases of PST and PHF.
DFA MODEL THROUGH ASSEMBLY CONTACT DATA AND GEOMETRICAL FEASIBILITY TESTINGIAEME Publication
The concept of Design for Assembly (DFA) assure cost effective assembly process by minimizing the assembly efforts. Part count reduction is one of the primary objective of DFA, which reduces the number of assembly levels and assembly tooling. However reducing part count with modified part geometries do not allow to follow the same assembly sequence that of used earlier. In this contest a framework for DFA coupled with assembly sequence planning to minimize the number of parts using the assembly coherence data and material compatibility testing without disturbing the functionality of the product is presented.
n our society we see some handicapped people they are not like a normal person. Those are injured by an accident or handicapped by birth. Those people are not in a position of doing our regular things like a normal person. Prosthesis is to be used for those kinds of people. Prosthesis is like a created organ or an artificial body part that should be placed in a missing body part.
The motion of a shank at the knee joint of prosthesis has been modeled mathematically by considering all the dimensions of a normal human. The motion of a normal human knee joint has been simulated with the help of Adams software. The results are analyzed by considering the forces that act on the feet while walking (usually known as reaction forces of ground). From the obtained results, it can be said that thus simulated prosthetic mechanism is suitable for all the people irrespective of age and weight.
COMPUTATIONAL FLUID DYNAMIC ANALYSIS OF AIRFOIL NACA0015IAEME Publication
In this chapter we choose standard airfoil NACA 0015. Which is symmetrical airfoil with a 15%thickness to chord ratio was analyzed on ANSYS FLUENT to determine the coefficient of lift,
coefficient of drag and graph of coefficient of lift vs. coefficient of drag. The 2-dimensional crosssectional view was considered. The wind velocity was taken as 17m/s which arecorresponding to232,940 Reynolds number. The airfoil, with an 8 in chord, was analyzed at 0, 5, 10 and 15 degrees.
Parameters viz. Coefficient of lift (Cl), Coefficient of drag (Cd) nd Cl/Cd are calculated and areplotted against different angle of attack.
A REVIEW: CARBON CAPTURE AND SEQUESTRATION (CCS) IN INDIAIAEME Publication
In 21st century research on carbon capture and sequestration is totally based on optimizing the process of capture either by increasing the capture efficiency or by reducing the work input (energy consumption) in the process of capturing the carbon dioxide. This review article is prime focused on the present scenario of global greenhouse gas (GHG) emissions; aspects of new world with CCS with its merits-demerits and new emerging technological implementations.
EXPERIMENTAL STUDY ON DAMPING PROPERTIES OF SISAL/FLAX FIBRE REINFORCED COMPO...IAEME Publication
Today’s most of the industries are generally using glass fibres and carbon fibres for better strength, low weight, and corrosion resistance. The main limitations of these materials are the availability, non biodegradable, health hazardous and their fabrication cost, hence the aim of this research is to replace these materials with natural fibers such as Flax and Sisal.
In this research work damping properties of Flax and Sisal fiber reinforced composites their constituents and manufacturing technologies will be reviewed.
DESIGN AND OPTIMIZATION OF SUBMERSIBLE PUMP IMPELLERIAEME Publication
Open well submersible pumps are relatively new product in the family of centrifugal pumps. These pumps are immersed in the working fluid unlike the conventional centrifugal pumps. Optimization of the design of the impeller without changing the diameter is one difficult task as it would not allow much increase in the head, hence the diameters are kept constant and the objective was formulated to improve the head claimed by the industry, by minimising the head losses that are particular to the impeller. The impeller design parameters are optimized using optimization algorithms such as GA,SA,PS etc and the optimized values are used for design of new impeller. This design is then tested using commercially available CFD package Ansys CFX with k-epsilon, k-epsilon EARMS and SST turbulence models.
International Journal of Computational Engineering Research(IJCER) is an intentional online Journal in English monthly publishing journal. This Journal publish original research work that contributes significantly to further the scientific knowledge in engineering and Technology
Experimental investigations of surface wear by dry sliding and induced damage...Barhm Mohamad
This study concerns the wear behaviour of metal couples used in industry, particularly in mechanical sliding systems (numerically controlled machine tools). In general, the nature of the materials of the parts of these systems which are in contact and move relatively, are medium carbon steels, thanks to their good mechanical and tribological properties. The present work aims to study, the dry sliding wear of the contact surface of the pin (machine slide) against the contact surface of a disc (machine groove) and the damage induced on the worn track. The pin is AISI 1038 and AISI 1045 steel, the disc is AISI 1055 steel. The tribological tests were carried out on a pin-disc tribometer, in an atmospheric environment. The wear of the pins being evaluated by weighing and studied according to the hardness of the pin with the variation of the normal load applied. The discussion of the results is based on SEM observations and EDS analyzes of worn surfaces and interfacial phenomena produced by dynamic contact. The results obtained indicated the influence of the applied load and the hardness on the wear of the pin and therefore on the tribological behaviour of the worn surfaces.
The purpose of the experimental work presented in this study is to study the effect
of concrete compressive strength and steel reinforcement ratio on capacity and
deflection of reinforced concrete two-way slabs. Three steel reinforcement ratios are
considered which are minimum, maximum and average of them in addition to two
concrete compressive strength
values of 20 and 30 MPa. The results from
experimental work show that increasing the reinforcing steel ratio leads to increase the
ultimate capacity of the slab in addition to decrease the maximum deflection. For slabs
with
= 20 MPa, increasing the reinforcing steel ratio from the minimum to the
maximum, i.e. 600 %, leads to increase ultimate capacity by about 156 % and decrease
maximum deflection by about 52 %. Wheras, For slabs with
= 30 MPa, increasing
the reinforcing steel ratio from the minimum to the maximum, i.e. 900 %, leads to
increase ultimate capacity by about 155 % and decrease maximum central deflection
by about 27 %. In addition, matmatical expresions for load-deflection relationships are
presented in the current study
SUGGESTING DEFLECTION EXPRESSIONS FOR RC 2-WAY SLABSIAEME Publication
The purpose of the experimental work presented in this study is to study the effect
of concrete compressive strength and steel reinforcement ratio on capacity and
deflection of reinforced concrete two-way slabs. Three steel reinforcement ratios are
considered which are minimum, maximum and average of them in addition to two
concrete compressive strength
values of 20 and 30 MPa. The results from
experimental work show that increasing the reinforcing steel ratio leads to increase the
ultimate capacity of the slab in addition to decrease the maximum deflection. For slabs
with
= 20 MPa, increasing the reinforcing steel ratio from the minimum to the
maximum, i.e. 600 %, leads to increase ultimate capacity by about 156 % and decrease
maximum deflection by about 52 %. Wheras, For slabs with
= 30 MPa, increasing
the reinforcing steel ratio from the minimum to the maximum, i.e. 900 %, leads to
increase ultimate capacity by about 155 % and decrease maximum central deflection
by about 27 %. In addition, matmatical expresions for load-deflection relationships are
presented in the current study.
EXPERIMENTAL STUDY ON ANCHORAGE BOND IN HIGH STRENGTH REINFORCED CONCRETE BEAMS IAEME Publication
This paper discuses experimentally the effect of steel bar diameter and embedment length on
the bond stresses, bond stress versus slip relation, failure pattern and load versus deflection
response of high strength reinforced concrete beams with dimensions (100 mm width x200 mm
height x1100 length). Four beams specimens were provided with three embedment lengths (80
mm), (100 mm) and (120 mm) in addition to two different bar diameters (10mm) and (16mm). The
test results concluded that the bond stresses and the relative displacement decrease with increasing
the embedment length and bar diameter.
Micro-structural and Tribological Behaviour of AA6063/12SiC-5Gr Hybrid Compos...ijsrd.com
In this paper the friction and wear behavior of aluminium matrix reinforced with silicon carbide and graphite is investigated. A pin on disc type apparatus is used to measure the sliding wear rate (WR), the frictional force (F) and the coefficient of friction (μ). Friction and wear behavior of the hybrid metal matrix composites (HMMC) have been investigated at various loads, sliding velocity and constant sliding distance. The applied loads are 20N, 40N, 60N and 80 N respectively, sliding speeds are 1.5 m/sec and 3 m/sec and the sliding distance is 1500 m. The aluminium based MMC has been produced by stir casting technique. AA6063 with 12SiC-5Gr composite is machined to the required size. Optical microscope is used for investigating the microstructure and surface properties of the specimen. The addition of graphite and silicon carbide reinforcement to AA 6063 alloy increases the wear resistance and hardness of the composites.
The peer-reviewed International Journal of Engineering Inventions (IJEI) is started with a mission to encourage contribution to research in Science and Technology. Encourage and motivate researchers in challenging areas of Sciences and Technology.
Influence of volume fraction, size, cracking, clustering of particulates and ...eSAT Journals
Abstract
The objective of this study is to examine the influence of volume fraction, size of particulates, formation of precipitates at the
matrix/particle interface, particle cracking, voids/porosity, and clustering of particulates on the strength and stiffness of
6063/SiCp metal matrix composites. Tensile strength and stiffness increase with an increase in the volume fraction of SiC
particulates. The tensile strength and stiffness decrease with increase in size of the particulates, presence of porosity, clustering,
and particle cracking. Formation of particulate clusters is more prominent in the composites having very small-reinforced
particulates. Mg2Si compound is likely to precipitate at the matrix/particle interfaces of 6063/SiC composite.
Keywords: 6063, SiC, clustering, cracking, porosity, clustering
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.
Dynamic Analysis of Double-Skin Composite Steel PlatesIOSR Journals
Double Skin Composite (DSC) plates are subjected to impact required to cause complete perforation and the accompanied failure modes are investigated. The amount of energy absorbed is calculated by capturing the residual velocity of penetrator after perforating the lower plate. The difference in initial kinetic energy and residual kinetic energy is the amount of energy absorbed by the panel. In the present paper a non-linear three-dimensional finite element models for Double Skin Composite panels subjected to dynamic loading is introduced. Pilot model is used to investigate the failure pattern in the composite panel when subjected to impact loads by rigid steel penetrator, while the other models are used to analyze the energy absorption capacity of such system when perforated. Results showed that such elements have good ability of absorbing energy when subjected to perforation, due to ductility of lower plate skin and vertical stiffness of lower shear studs.
MICROSTRUCTURAL STUDY AND TRIBOLOGICAL BEHAVIOR OF WC-Co COATINGS ON STAINLES...IAEME Publication
Tungsten Carbide (WC) coatings exhibit high wear resistance at low and high temperatures,WC - Cobalt coatings will demonstrate anti-resistive and wear characteristics better than those of conventional materials. Research in this area has shown that the service life of the WC-Co coatings
depended on varying compositions of tungsten and cobalt.
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.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
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2. Sliding Wear of AA6061/Carbon Black Metal Matrix Composites
http://www.iaeme.com/IJMET/index.asp 204 editor@iaeme.com
2. EXPERIMENTAL SETUP
The matrix material was AA6061 aluminum alloy. The reinforcement material was carbon black (CB)
nanoparticles of average size 100nm. The matrix alloys and composites were prepared by the stir
casting and low-pressure die casting process. The volume fractions of carbon black reinforcement
were 10%, 20%, and 30%. Prior to the machining of composite samples, T6 heat treatment was given.
The heat-treated samples were machined to get flat-rectangular specimens for the tensile tests. The
tensile specimens were placed in the grips of a Universal Test Machine (UTM) at a specified grip
separation and pulled until failure. The test speed was 2 mm/min (as for ASTM D3039). A strain
gauge was used to determine elongation. Fracture surfaces of the test samples were analyzed with a
scanning electron microscope (SEM) using S-3000N Toshiba SEM to define the macroscopic fracture
mode and to establish the microscopic mechanisms governing fracture.
The heat-treated samples were machined to get cylindrical specimens of 10 mm diameter and 30
mm length for the wear tests. The levels chosen for the controllable process parameters are
summarized in Table 1. The orthogonal array, L9 was preferred to carry out wear experiments (Table
2). A pin-on-disc type friction and wear monitor (ASTM G99) was employed to evaluate the friction
and wear behavior of AA6061/CB composites against hardened ground steel (En32) disc as shown in
figure 1. Knoop microhardness was conducted before and after wear tests. Optical and scanning
electron microscopy analyses were also carried out to find consequence of wear test AA6061/CB
composite specimens.
Table 1 Control parameters and levels
Factor Symbol Level–1 Level–2 Level–3
Reinforcement, vf A 0.1 0.2 0.3
Load, N B 10 20 30
Speed, m/s C 1 2 3
Sliding distance, m D 500 750 1000
Table 2 Orthogonal array (L9) and control parameters
Treat No. A B C D
1 1 1 1 1
2 1 2 2 2
3 1 3 3 3
4 2 1 2 3
5 2 2 3 1
6 2 3 1 2
7 3 1 3 2
8 3 2 1 3
9 3 3 2 1
3. T. Prasad and A. Chennakesava Reddy
http://www.iaeme.com/IJMET/index.asp 205 editor@iaeme.com
Figure 1 shows the photograph of the experimental setup
3. RESULTS AND DISCUSSIONS
The tensile strength and elastic modulus of AA6061/CB metal matrix composites increase with
increasing volume fraction of carbon black content as shown in figure 2. In AA6061/10%CB
composites, the fracture was occurred in the matrix only. While, the fracture was noticed in the
regions of particle-matrix interface and in the matrix for the composites of AA6061/20%CB and
AA6061/30%CB. The fracture of carbon black nanoparticles was not revealed in all the composites.
Figure 2 Effect of volume fraction on (a) tensile strength and (b) Elastic modulus.
Figure 3 Fractographs of AA6061/CB metal matrix composites: (a) 10%CB, (b) 20%CB and (c) 30% CB.
4. Sliding Wear of AA6061/Carbon Black Metal Matrix Composites
http://www.iaeme.com/IJMET/index.asp 206 editor@iaeme.com
The percent contribution indicates that the volume fraction of CB, contributes 21.95% to the
variation in the wear rate as given in Table 3. The normal load gives 2.96% of variation in the wear
rate. The sliding speed affords 6.36% of variation in the wear rate. The sliding distance tenders
68.72% of the total variation in the wear rate. The R-squared values of %reinforcement, normal load,
sliding speed and sliding distance are, respectively, 0.9640, 0.7338, 0.28872 and 0.9651. The trend of
mean values obtained by Taguchi techniques is same as that of R-squared values.
Table 3 ANOVA summary of the wear rate
Source Sum 1 Sum 2 Sum 3 SS v V P
A 2.36E-02 2.07E-02 1.85E-02 4.25E-06 2 2.13E-06 21.95
B 2.01E-02 2.19E-02 2.09E-02 5.74E-07 2 2.87E-07 2.96
C 2.02E-02 2.25E-02 2.01E-02 1.23E-06 2 6.16E-07 6.36
D 1.71E-02 1.31E-04 6.28E-02 1.33E-05 2 6.66E-06 68.72
e 5.42E-20 0 0.00 0.00
T 8.09E-02 6.53E-02 1.22E-01 1.94E-05 8 100.00
Note: SS is the sum of square, v is the degrees of freedom, V is the variance, P is the percentage of contribution
and T is the sum squares due to total variation.
Figure 4 Variation of wear rate with (a) volume fraction of CB, (b) Normal load, (c) sliding speed and (d)
sliding distance.
The wear rate was decreased with increase in volume fraction of CB nanoparticles in AA6061
alloy matrix (figure 4a). This is due to high hardness of CB nanoparticles as compared to soft matrix.
An increase in wear rate is with increase of normal load applied on the test specimen (figure 4b). This
effect was due to adhesion and increase in plastic deformation at the surface layers. The wear rate was
decreased by the increase of speed (figure 4c). The wear rate increased with the sliding distance as
shown in figure 4d.
5. T. Prasad and A. Chennakesava Reddy
http://www.iaeme.com/IJMET/index.asp 207 editor@iaeme.com
The mathematical relations between wear and volume fraction of CB content, normal load, sliding
speed and sliding distance are given by
= 0.0049 .
(1)
= 0.006 .
(2)
= 0.0067 .
(3)
= 0.0049 .
(4)
where,
Wrp is the wear rate due to vol.% of reinforcement (vf), mg/m
Wrf is the wear rate due to normal load (F), mg/m
Wrn is the wear rate due to speed (N), mg/m
Wrd is the wear rate sliding distance (d), mg/m.
Rhee [23] found that the total wear of a polymer-matrix is a function of the applied load F, speed
V and sliding time t according to
∆ = !
(5)
where ΔW is the weight loss of the friction material and K, a, b and c are empirical constants. F is
the applied load; v is the sliding speed; and t is the sliding time. In earlier work [20], the total wear of
a metal matrix composite was defined as a function of reinforcement volume fraction, applied load,
sliding speed and
sliding distance according to
∆ = !
" (6)
where a, b, c and d are power law coefficients of reinforcement volume fraction (vf), applied load
(F), sliding speed (V) and sliding distance (S), respectively. K is the empirical constant.
The values of power law coefficients a, b, c and d are, respectively, -0.2025, 0.0512, -0.1792 and
0.0832 from Equations (1) to (6). By substituting the representative values of Vf, F, N and S and their
corresponding power law coefficients on the right side of Equation (6) and substituting the
experimentally obtained wear rates on the left side of Equation (6), the value of K is determined. The
over-all wear rate (mg/m) equation for AA6061/CB composites is given by
∆ = 2.96 %10 . . .
S .
(7)
Figure 5 Worn surfaces of AA6061/CB composites: (a) 10%CB, (b) 20%CB and (c) 30%CB.
The abrasive and adhesive wear mechanisms were recognized based on the worn surfaces as seen
in figure 5. An increase in the reinforcement reduced the wear. The worn surfaces of AA6061/CB
composites revealed cavities and large grooved regions on the wear surfaces and also enclosed carbon
nanoparticles in the cavities, some of them having been pulled out. There was a change from a mild to
a severe wear resulted by an increase in the sliding distance due to a greater plastic flow on the pin
6. Sliding Wear of AA6061/Carbon Black Metal Matrix Composites
http://www.iaeme.com/IJMET/index.asp 208 editor@iaeme.com
surface of the specimen. The particle pull-out was due to the poor particle/matrix bonding. This was
on account of the abrasive mechanism of the composite material while resisting the delamination
process. The wear resistance was greater in the case of composites having high volume fraction of
carbon nanoparticles. The surface hardness of the composites was increased after wear test due to
work hardening as shown in figure 6.
Figure 6 Variation of knop hardness with volume fraction of CB.
4. CONCLUSION
In the present work experiments were conducted on AA6061/CB metal matrix composites to find the
fracture behavior and sliding wear. The influential parameters were volume fraction of CB, normal
load, sliding speed and sliding distance. The sliding wear is increased with increasing sliding distance
and is decreased with increasing volume fraction of CB. Maximum sliding wear of 68.72% was
attributed sliding distance. Compared with sliding wear of matrix alloy AA6061, sliding wear of
AA6061/CB metal matrix composites is very low. Sliding wear resistance increases by 42.56% for
AA6061/30%CB metal matrix composites as compared to the matrix alloy AA6061.
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