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- Forced Damped Vibration Analysis of Optimized Cantilever Beam using Di...IRJET Journal
This document summarizes a study on analyzing the forced damped vibration of an optimized cantilever beam using different methods. The study aims to identify a suitable material for manufacturing an engine casing by considering parameters like material, weight, damping coefficient, spring stiffness, and natural frequency. Using the Taguchi method and regression analysis, aluminum is identified as the optimal material. The natural frequency is then evaluated using theoretical, experimental (FFT analyzer), and simulation (ANSYS) methods. Time graphs and FFT readings from the experimental setup show peak frequencies that match the theoretical natural frequency of 5.36 Hz calculated using analytical methods.
Efficiency Measurement of Indian Standard SPT Hammer Context for Liquefactionijsrd.com
The standard penetration test (SPT) is the most widely used in in-situ test. This test involve hammer impact on penetration rods, and resulting penetration resistance or blow counts is strongly influenced by the amount of hammer energy actually transferred into the rods. Research has shown that the energy transfer to the rod is lesser than the actual energy generated by the blows of hammer, so the direct approach of determining the transferred energy, based on force and acceleration measurements near the top of the drill rods, should be adopted. The proposed approach provides a unified method of measuring transferred energy in the SPT. The measured energy data can be used in a consistent manner to correct the recorded blow counts to a reference energy level for each test and allow reliable correlation of the same in assessment of liquefaction potential evaluation.
The document describes three experiments measuring strain on different surfaces using strain gauges:
1) Measuring strain on an I-beam under varying loads, finding theoretical strain values match measured values. Principal strains are calculated.
2) Measuring strain on a torsional cylindrical rod, calculating principal strains.
3) Measuring combined bending and torsion strain on a circular shaft, calculating principal strains using Mohr's circle.
The experiments aim to observe and compare measured and theoretical strain values using strain gauges and analytical calculations.
Design of Semi-Automatic Vibration Absorber by using FEAIRJET Journal
This document describes the design of a semi-automatic dual mass vibration absorber using finite element analysis. The dual mass vibration absorber uses two movable masses that can be tuned to reduce vibrations by moving the masses in or out. Modal analysis using finite elements was conducted to analyze the vibration modes of the absorber. The analysis showed the natural frequencies and mode shapes changed as the mass positions along the rods were varied. The dual mass vibration absorber was found to be effective at reducing beam vibrations around the attachment point and elsewhere by tuning the absorber's frequency through mass positioning.
Evaluation of the Turbine Bladed Disc Design for Resonant Vibration ExcitationIRJET Journal
This document discusses the evaluation of turbine bladed disc design for resonant vibration excitation. It begins with an abstract that outlines studying the vibration behavior of bladed discs and integrated bladed rotor systems. It then discusses preliminary design considerations for turbine blades to address vibrational issues. Next, it covers cyclic symmetric analysis of bladed discs and integrated bladed rotor models. Finite element analysis is used to determine natural frequencies and develop Campbell diagrams to identify resonant speeds. The document focuses on evaluating designs to prevent excitation of dangerous vibrational modes at critical speeds.
Monitoring of strain and seismic vibrations in structureskalyanabooshnam
This document discusses monitoring strain and seismic vibrations in structures through various approaches. It compares using electrical strain gauges, piezoelectric materials, and vibration monitoring to assess structural health. Experimental work was conducted on reinforced concrete beams to measure strain using electrical gauges under loading. Piezoelectric patches were also bonded to the beams to monitor vibrations from 100-250 kHz and detect changes caused by damage. The results showed the electrical strain gauges and vibration monitoring techniques can effectively monitor structures and detect damage.
IRJET - Parametric Study of Micro Electro-Mechanical System Capacitive Type A...IRJET Journal
This document summarizes a study on the parametric effects on a micro electro-mechanical system (MEMS) capacitive accelerometer. A 2D model of the accelerometer was created and modal analysis was performed to extract mode shapes and resonant frequencies. The deformation of the moving finger was observed at resonant frequencies of 230.80 Hz and 792.31 Hz, where the finger shape would impact the capacitance measurement. The error in measured capacitance values at these frequencies due to finger deformation was analyzed. The study found that the bandwidth of the accelerometer based on the resonant frequency difference was 562 Hz.
IRJET- Nonlinear Transient Vibration Analysis of Mounting Superstructure for ...IRJET Journal
1) The document describes a nonlinear transient vibration analysis of a mounting superstructure designed to isolate vibration sensitive cargo during road transportation.
2) Wire rope isolators are selected to connect the mounting frame to the vehicle base frame in order to dissipate vibration energy from road shocks and impacts.
3) A nonlinear transient analysis is conducted to investigate the shock response of the designed mounting superstructure when subjected to road generated shock pulses, as the isolators exhibit nonlinear stiffness.
IRJET- Forced Damped Vibration Analysis of Optimized Cantilever Beam using Di...IRJET Journal
This document summarizes a study on analyzing the forced damped vibration of an optimized cantilever beam using different methods. The study aims to identify a suitable material for manufacturing an engine casing by considering parameters like material, weight, damping coefficient, spring stiffness, and natural frequency. Using the Taguchi method and regression analysis, aluminum is identified as the optimal material. The natural frequency is then evaluated using theoretical, experimental (FFT analyzer), and simulation (ANSYS) methods. Time graphs and FFT readings from the experimental setup show peak frequencies that match the theoretical natural frequency of 5.36 Hz calculated using analytical methods.
Efficiency Measurement of Indian Standard SPT Hammer Context for Liquefactionijsrd.com
The standard penetration test (SPT) is the most widely used in in-situ test. This test involve hammer impact on penetration rods, and resulting penetration resistance or blow counts is strongly influenced by the amount of hammer energy actually transferred into the rods. Research has shown that the energy transfer to the rod is lesser than the actual energy generated by the blows of hammer, so the direct approach of determining the transferred energy, based on force and acceleration measurements near the top of the drill rods, should be adopted. The proposed approach provides a unified method of measuring transferred energy in the SPT. The measured energy data can be used in a consistent manner to correct the recorded blow counts to a reference energy level for each test and allow reliable correlation of the same in assessment of liquefaction potential evaluation.
The document describes three experiments measuring strain on different surfaces using strain gauges:
1) Measuring strain on an I-beam under varying loads, finding theoretical strain values match measured values. Principal strains are calculated.
2) Measuring strain on a torsional cylindrical rod, calculating principal strains.
3) Measuring combined bending and torsion strain on a circular shaft, calculating principal strains using Mohr's circle.
The experiments aim to observe and compare measured and theoretical strain values using strain gauges and analytical calculations.
Design of Semi-Automatic Vibration Absorber by using FEAIRJET Journal
This document describes the design of a semi-automatic dual mass vibration absorber using finite element analysis. The dual mass vibration absorber uses two movable masses that can be tuned to reduce vibrations by moving the masses in or out. Modal analysis using finite elements was conducted to analyze the vibration modes of the absorber. The analysis showed the natural frequencies and mode shapes changed as the mass positions along the rods were varied. The dual mass vibration absorber was found to be effective at reducing beam vibrations around the attachment point and elsewhere by tuning the absorber's frequency through mass positioning.
Evaluation of the Turbine Bladed Disc Design for Resonant Vibration ExcitationIRJET Journal
This document discusses the evaluation of turbine bladed disc design for resonant vibration excitation. It begins with an abstract that outlines studying the vibration behavior of bladed discs and integrated bladed rotor systems. It then discusses preliminary design considerations for turbine blades to address vibrational issues. Next, it covers cyclic symmetric analysis of bladed discs and integrated bladed rotor models. Finite element analysis is used to determine natural frequencies and develop Campbell diagrams to identify resonant speeds. The document focuses on evaluating designs to prevent excitation of dangerous vibrational modes at critical speeds.
Monitoring of strain and seismic vibrations in structureskalyanabooshnam
This document discusses monitoring strain and seismic vibrations in structures through various approaches. It compares using electrical strain gauges, piezoelectric materials, and vibration monitoring to assess structural health. Experimental work was conducted on reinforced concrete beams to measure strain using electrical gauges under loading. Piezoelectric patches were also bonded to the beams to monitor vibrations from 100-250 kHz and detect changes caused by damage. The results showed the electrical strain gauges and vibration monitoring techniques can effectively monitor structures and detect damage.
IRJET - Parametric Study of Micro Electro-Mechanical System Capacitive Type A...IRJET Journal
This document summarizes a study on the parametric effects on a micro electro-mechanical system (MEMS) capacitive accelerometer. A 2D model of the accelerometer was created and modal analysis was performed to extract mode shapes and resonant frequencies. The deformation of the moving finger was observed at resonant frequencies of 230.80 Hz and 792.31 Hz, where the finger shape would impact the capacitance measurement. The error in measured capacitance values at these frequencies due to finger deformation was analyzed. The study found that the bandwidth of the accelerometer based on the resonant frequency difference was 562 Hz.
IRJET- Nonlinear Transient Vibration Analysis of Mounting Superstructure for ...IRJET Journal
1) The document describes a nonlinear transient vibration analysis of a mounting superstructure designed to isolate vibration sensitive cargo during road transportation.
2) Wire rope isolators are selected to connect the mounting frame to the vehicle base frame in order to dissipate vibration energy from road shocks and impacts.
3) A nonlinear transient analysis is conducted to investigate the shock response of the designed mounting superstructure when subjected to road generated shock pulses, as the isolators exhibit nonlinear stiffness.
This report summarizes a shock test experiment on a cantilevered aluminum beam. A rotating hammer struck the beam at various angles, and a string gauge measured the resulting deformation. The maximum impact strain of 1876 μ-strain occurred at 20 degrees. Calculations determined the maximum stress on the beam was 18760.69 psi, which is 40.43% of the yield stress for aluminum. The energy loss in the system was approximately 28.5%, and the natural frequency of the beam was 76.92 Hz. The experiment verified relationships between impact energy, beam deformation, and impact angle.
This document provides instructions for conducting a tensile test to determine the mechanical properties of polymers. A tensile test involves gripping a dogbone-shaped polymer specimen at both ends and pulling it at a constant rate until failure. Key points:
- Stress-strain curves are generated from the test, showing properties like elastic modulus, yield point, and toughness.
- Properties depend on factors like crystallinity, molecular weight, and glass transition temperature. Brittle polymers have steeper stress-strain curves.
- The test procedure involves preparing specimens to standards, setting up the tensile testing machine and software to control displacement rate and record data, calibrating load cells, gripping the specimen, and conducting the
Fabrication and Analysis of Fatigue Testing Machinetheijes
The document describes the fabrication and analysis of a fatigue testing machine. Key points:
- The machine subjects material specimens to repeated cyclic loading to determine their fatigue strength and create S-N curves.
- Components include a motor, bearings, frame, testing specimens of mild steel and stainless steel, a sensor, and digital counter.
- Testing of the materials generated S-N curves and estimated their endurance limits, which were within 20% of actual values.
- The design provides an affordable way to experimentally determine fatigue properties of materials through cyclic loading tests.
Analysing and Comparing the Behaviours of Cylindrical Fatigue Specimens Made ...IRJET Journal
This document analyzes and compares the behaviors of cylindrical fatigue specimens made of nickel-titanium shape memory alloy and steel using finite element analysis in Abaqus. The modal frequencies and deformations were analyzed for the first 20 modes of each material. For both materials, higher order flexions occurred at higher frequencies. Tensile stress was highest in the gauge section and highest for steel due to its higher Young's modulus. The nickel-titanium alloy specimen had a lower maximum frequency, energy, and tensile stress compared to steel. Shape memory alloys are implemented in structures for vibration control and energy dissipation during earthquakes.
This document describes a project to design and fabricate a small universal testing machine (UTM) at CECOS University. A group of 4 students led the project under the guidance of an advisor and co-advisor. The UTM will be capable of performing tensile and compressive tests on soft materials like aluminum and plastics. It will weigh approximately 70kg and have dimensions of 80cm. The main components include steel plates, columns, power screws, sensors, and a stepper motor. Mild steel was selected as the primary material and fabrication involved various machining processes like cutting, drilling, grinding, and welding. The document outlines the subassemblies, final assembly, testing plans, and references used.
Nut Factor Analysis of Aluminium IVD Coated and Cadmium Electroplated High St...IRJET Journal
This document summarizes a study on the nut factor analysis of aluminium Ion Vapor Deposition (IVD) coated and cadmium electroplated high strength fasteners made of 35NCD16 alloy steel. Friction tests were conducted on M14 bolts under different preload forces to calculate the nut factor. The average nut factor was found to be 0.111955 for aluminium IVD coated fasteners and 0.24 for cadmium coated fasteners, indicating that cadmium coated fasteners have a higher nut factor. The nut factor values varied with factors like coating, threading tolerance, surface roughness and lubrication.
This document discusses strain measurement techniques. It introduces strain gauges as the most common method to measure strain. Strain gauges work by changing electrical resistance proportionally to the amount of strain. To accurately measure small resistance changes from strain, a Wheatstone bridge circuit is used to convert it to a voltage output. The document covers the basic principles of how strain gauges work and are used to measure static, transient, and dynamic strain through small changes in resistance.
This document provides an overview of bearing vibration analysis. It discusses the various sources of bearing vibration, including variable compliance, geometrical imperfections like surface roughness and waviness, and discrete defects. It describes how these factors can generate complex vibration signatures. The document also outlines characteristic bearing frequencies that may be present in vibration spectra and how they are calculated based on bearing geometry. It provides an example of how vibration analysis can detect deterioration by identifying anomalies in the bearing speed ratio. In summary, the document examines the causes of bearing vibration and how vibration analysis is used to monitor bearing health and detect issues.
In this study Dynamic property of a structural element which is frequency, damping and mode shapes are described by a process called modal analysis. Structural condition can be monitored by analyzing the changes in frequencies and mode shapes. All materials posses certain amount of internal damping. Similarly steel fibers also produce some internal damping. A system is a combination of elements, for example a structure is a system whose elements are beams, columns, slabs, footings .etc. In all those elements I have selected beam elements. Many research works are conducted on different type of materials under dynamic loading.
This is my Lab Report of Tensile Test when I was conducting engineering material lab in Sampoerna University. Feel free to download for a reference.
I know it is not a good report, but I hope this share might help you to find something you need.
Thank you.
In this paper the objective of this work is to develop a model to simulate the vibrational
effects of rotating machine parts on the single point cutting tool and cutting force acting on single
point cutting tool in turning. In this paper experimental studies were performed on turning process &
vibration is measured with the help of accelerometer along with a device called as Fast Fourier
Transformer (FFT) Analyzer and cutting force is measured with the help of Tool dynamometer. The
vibration of single point cutting tool is sensed by accelerometer located on the tool-post of lathe
machine. The accelerometer will send the sensed vibration to FFT Analyzer which can be convert the
sensed data by using accelerometer shown in PC such as frequency, Amplitude, displacement & so
on and cutting force is sensed by strain gauges which are compacted in tool post. The sensed force
will send to dynamometer, it displays the cutting force. The obtained experimental data given to an
Artificial Neural Network (ANN) in Matlab, with the help of experimental data ANN is to be trained.
And by using ANN can predict the vibrations and cutting force by changing parameters of turning
such as spindle speed, feed & depth of cut. This model of ANN can be predict vibrations of single
point cutting tool and cutting force acting on single point cutting tool to avoid the failure of cutting
tool.
This document provides an overview of tensile testing. It discusses tensile specimens, testing machines, stress-strain curves, and key mechanical properties measured by tensile tests such as strength, ductility, and elastic modulus. Tensile tests are used to select materials, ensure quality, compare new materials/processes, and predict behavior under other loads. Stress-strain curves are generated by applying tension to a specimen and recording the resulting force and elongation. Important aspects of the curves, like yield strength and plastic deformation, are defined.
Hammad Shoaib submitted a lab report for the Mechanics of Solids course to determine various mechanical properties of materials through tensile and bend tests. The report describes procedures to develop a stress-strain curve for steel rebar and determine its yield strength, ultimate strength, modulus of elasticity, and percentage elongation. Additional experiments include a bend test to examine ductility and a tensile test on wood to find compressive strengths parallel and perpendicular to the grain.
A universal testing machine, also known as a universal tester, materials testing machine or materials test frame, is used to test the tensile stress and compressive strength of materials.
VIBRATION LEVEL OPTIMIZATION OF LATHE MACHINE BY CONSIDERING NONLINEARITIES I...ijiert bestjournal
This document discusses vibration isolation methods for reducing noise and vibration in machines. It provides an overview of previous research on analyzing vibration levels in machines like lathe machines and blowers, and developing vibration isolators using materials like viscoelastic pads. The document reviews studies on modeling and designing nonlinear vibration isolators, and analyzing the effects of parameters like temperature on isolator performance. It concludes that vibration pads made of viscoelastic materials are effective and low-cost methods for vibration isolation in machines.
Design And Analysis of Test Rig for Rudder PedalIRJET Journal
This document describes the design and analysis of a test rig for rudder pedals. Finite element analysis was used to analyze the test rig design and verify that it can withstand loads from testing the rudder pedals. The test rig model was analyzed under static and dynamic loads up to 1400kg, and was found to have a maximum stress of 67.7N/mm^2 and displacement of 0.49mm, meeting design requirements. The analysis validated the test rig design for safely testing rudder pedals without damage.
Evaluation The Effect Of Machining Parameters For MRR Using Turning Of Alumin...IJSRD
Turning is a basic operation for various industries & it is very essential to optimize the various parameters affecting turning for the optimum condition. Turning operation is affected by both machining parameters & Cutting fluids. The parameter influence most are cutting speed, depth of cut , feed, geometry of cutting tool like principle cutting edge angle ,rake angle, nose radius etc. In order to control MRR it is very necessary to control these parameters. In the project turning operation the different values of cutting parameters, cutting speed (45, 90,140,330), feed rate (.1, 22, 44, 68 mm/rev), depth of cut (.5, 1, 1.5,2 mm) are selected. MRR is largely influenced by Speed then Feed then DOC. MRR shows an increasing trend with increasing Speed. MRR shows an increasing trend with increasing Feed. MRR shows an increasing trend with increasing DOC.
The document describes an experiment to optimize cutting parameters for wire electrical discharge machining (WEDM) of titanium grade 5 alloy. Experiments were conducted using a Taguchi L25 orthogonal array to investigate the effects of pulse on time, pulse off time, peak current, wire tension, servo voltage, and servo feed rate on material removal rate and surface roughness. The experiments found that pulse on time, pulse off time, and peak current were the most significant factors influencing the performance measures. Analysis of the experimental results using signal-to-noise ratios identified the optimal machining parameters to maximize material removal rate while minimizing surface roughness.
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.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
This document describes a proposed eco-friendly electricity generator that uses piezoelectric materials. Piezoelectric materials generate an electric charge when mechanically strained. The document discusses using arrays of piezoelectric crystals embedded in structures like sidewalks, roads, and floors that are subjected to human or vehicle traffic. The vibrations and pressures from people walking or driving would strain the crystals and produce electric charges that could be harvested and stored in batteries. The document proposes several specific applications of this concept, such as embedding crystals in roads, sidewalks, dance floors, keyboards, and floor tiles. It suggests this could provide a pollution-free source of electricity for powering lights, buildings or other devices by capturing energy that is normally
This report summarizes a shock test experiment on a cantilevered aluminum beam. A rotating hammer struck the beam at various angles, and a string gauge measured the resulting deformation. The maximum impact strain of 1876 μ-strain occurred at 20 degrees. Calculations determined the maximum stress on the beam was 18760.69 psi, which is 40.43% of the yield stress for aluminum. The energy loss in the system was approximately 28.5%, and the natural frequency of the beam was 76.92 Hz. The experiment verified relationships between impact energy, beam deformation, and impact angle.
This document provides instructions for conducting a tensile test to determine the mechanical properties of polymers. A tensile test involves gripping a dogbone-shaped polymer specimen at both ends and pulling it at a constant rate until failure. Key points:
- Stress-strain curves are generated from the test, showing properties like elastic modulus, yield point, and toughness.
- Properties depend on factors like crystallinity, molecular weight, and glass transition temperature. Brittle polymers have steeper stress-strain curves.
- The test procedure involves preparing specimens to standards, setting up the tensile testing machine and software to control displacement rate and record data, calibrating load cells, gripping the specimen, and conducting the
Fabrication and Analysis of Fatigue Testing Machinetheijes
The document describes the fabrication and analysis of a fatigue testing machine. Key points:
- The machine subjects material specimens to repeated cyclic loading to determine their fatigue strength and create S-N curves.
- Components include a motor, bearings, frame, testing specimens of mild steel and stainless steel, a sensor, and digital counter.
- Testing of the materials generated S-N curves and estimated their endurance limits, which were within 20% of actual values.
- The design provides an affordable way to experimentally determine fatigue properties of materials through cyclic loading tests.
Analysing and Comparing the Behaviours of Cylindrical Fatigue Specimens Made ...IRJET Journal
This document analyzes and compares the behaviors of cylindrical fatigue specimens made of nickel-titanium shape memory alloy and steel using finite element analysis in Abaqus. The modal frequencies and deformations were analyzed for the first 20 modes of each material. For both materials, higher order flexions occurred at higher frequencies. Tensile stress was highest in the gauge section and highest for steel due to its higher Young's modulus. The nickel-titanium alloy specimen had a lower maximum frequency, energy, and tensile stress compared to steel. Shape memory alloys are implemented in structures for vibration control and energy dissipation during earthquakes.
This document describes a project to design and fabricate a small universal testing machine (UTM) at CECOS University. A group of 4 students led the project under the guidance of an advisor and co-advisor. The UTM will be capable of performing tensile and compressive tests on soft materials like aluminum and plastics. It will weigh approximately 70kg and have dimensions of 80cm. The main components include steel plates, columns, power screws, sensors, and a stepper motor. Mild steel was selected as the primary material and fabrication involved various machining processes like cutting, drilling, grinding, and welding. The document outlines the subassemblies, final assembly, testing plans, and references used.
Nut Factor Analysis of Aluminium IVD Coated and Cadmium Electroplated High St...IRJET Journal
This document summarizes a study on the nut factor analysis of aluminium Ion Vapor Deposition (IVD) coated and cadmium electroplated high strength fasteners made of 35NCD16 alloy steel. Friction tests were conducted on M14 bolts under different preload forces to calculate the nut factor. The average nut factor was found to be 0.111955 for aluminium IVD coated fasteners and 0.24 for cadmium coated fasteners, indicating that cadmium coated fasteners have a higher nut factor. The nut factor values varied with factors like coating, threading tolerance, surface roughness and lubrication.
This document discusses strain measurement techniques. It introduces strain gauges as the most common method to measure strain. Strain gauges work by changing electrical resistance proportionally to the amount of strain. To accurately measure small resistance changes from strain, a Wheatstone bridge circuit is used to convert it to a voltage output. The document covers the basic principles of how strain gauges work and are used to measure static, transient, and dynamic strain through small changes in resistance.
This document provides an overview of bearing vibration analysis. It discusses the various sources of bearing vibration, including variable compliance, geometrical imperfections like surface roughness and waviness, and discrete defects. It describes how these factors can generate complex vibration signatures. The document also outlines characteristic bearing frequencies that may be present in vibration spectra and how they are calculated based on bearing geometry. It provides an example of how vibration analysis can detect deterioration by identifying anomalies in the bearing speed ratio. In summary, the document examines the causes of bearing vibration and how vibration analysis is used to monitor bearing health and detect issues.
In this study Dynamic property of a structural element which is frequency, damping and mode shapes are described by a process called modal analysis. Structural condition can be monitored by analyzing the changes in frequencies and mode shapes. All materials posses certain amount of internal damping. Similarly steel fibers also produce some internal damping. A system is a combination of elements, for example a structure is a system whose elements are beams, columns, slabs, footings .etc. In all those elements I have selected beam elements. Many research works are conducted on different type of materials under dynamic loading.
This is my Lab Report of Tensile Test when I was conducting engineering material lab in Sampoerna University. Feel free to download for a reference.
I know it is not a good report, but I hope this share might help you to find something you need.
Thank you.
In this paper the objective of this work is to develop a model to simulate the vibrational
effects of rotating machine parts on the single point cutting tool and cutting force acting on single
point cutting tool in turning. In this paper experimental studies were performed on turning process &
vibration is measured with the help of accelerometer along with a device called as Fast Fourier
Transformer (FFT) Analyzer and cutting force is measured with the help of Tool dynamometer. The
vibration of single point cutting tool is sensed by accelerometer located on the tool-post of lathe
machine. The accelerometer will send the sensed vibration to FFT Analyzer which can be convert the
sensed data by using accelerometer shown in PC such as frequency, Amplitude, displacement & so
on and cutting force is sensed by strain gauges which are compacted in tool post. The sensed force
will send to dynamometer, it displays the cutting force. The obtained experimental data given to an
Artificial Neural Network (ANN) in Matlab, with the help of experimental data ANN is to be trained.
And by using ANN can predict the vibrations and cutting force by changing parameters of turning
such as spindle speed, feed & depth of cut. This model of ANN can be predict vibrations of single
point cutting tool and cutting force acting on single point cutting tool to avoid the failure of cutting
tool.
This document provides an overview of tensile testing. It discusses tensile specimens, testing machines, stress-strain curves, and key mechanical properties measured by tensile tests such as strength, ductility, and elastic modulus. Tensile tests are used to select materials, ensure quality, compare new materials/processes, and predict behavior under other loads. Stress-strain curves are generated by applying tension to a specimen and recording the resulting force and elongation. Important aspects of the curves, like yield strength and plastic deformation, are defined.
Hammad Shoaib submitted a lab report for the Mechanics of Solids course to determine various mechanical properties of materials through tensile and bend tests. The report describes procedures to develop a stress-strain curve for steel rebar and determine its yield strength, ultimate strength, modulus of elasticity, and percentage elongation. Additional experiments include a bend test to examine ductility and a tensile test on wood to find compressive strengths parallel and perpendicular to the grain.
A universal testing machine, also known as a universal tester, materials testing machine or materials test frame, is used to test the tensile stress and compressive strength of materials.
VIBRATION LEVEL OPTIMIZATION OF LATHE MACHINE BY CONSIDERING NONLINEARITIES I...ijiert bestjournal
This document discusses vibration isolation methods for reducing noise and vibration in machines. It provides an overview of previous research on analyzing vibration levels in machines like lathe machines and blowers, and developing vibration isolators using materials like viscoelastic pads. The document reviews studies on modeling and designing nonlinear vibration isolators, and analyzing the effects of parameters like temperature on isolator performance. It concludes that vibration pads made of viscoelastic materials are effective and low-cost methods for vibration isolation in machines.
Design And Analysis of Test Rig for Rudder PedalIRJET Journal
This document describes the design and analysis of a test rig for rudder pedals. Finite element analysis was used to analyze the test rig design and verify that it can withstand loads from testing the rudder pedals. The test rig model was analyzed under static and dynamic loads up to 1400kg, and was found to have a maximum stress of 67.7N/mm^2 and displacement of 0.49mm, meeting design requirements. The analysis validated the test rig design for safely testing rudder pedals without damage.
Evaluation The Effect Of Machining Parameters For MRR Using Turning Of Alumin...IJSRD
Turning is a basic operation for various industries & it is very essential to optimize the various parameters affecting turning for the optimum condition. Turning operation is affected by both machining parameters & Cutting fluids. The parameter influence most are cutting speed, depth of cut , feed, geometry of cutting tool like principle cutting edge angle ,rake angle, nose radius etc. In order to control MRR it is very necessary to control these parameters. In the project turning operation the different values of cutting parameters, cutting speed (45, 90,140,330), feed rate (.1, 22, 44, 68 mm/rev), depth of cut (.5, 1, 1.5,2 mm) are selected. MRR is largely influenced by Speed then Feed then DOC. MRR shows an increasing trend with increasing Speed. MRR shows an increasing trend with increasing Feed. MRR shows an increasing trend with increasing DOC.
The document describes an experiment to optimize cutting parameters for wire electrical discharge machining (WEDM) of titanium grade 5 alloy. Experiments were conducted using a Taguchi L25 orthogonal array to investigate the effects of pulse on time, pulse off time, peak current, wire tension, servo voltage, and servo feed rate on material removal rate and surface roughness. The experiments found that pulse on time, pulse off time, and peak current were the most significant factors influencing the performance measures. Analysis of the experimental results using signal-to-noise ratios identified the optimal machining parameters to maximize material removal rate while minimizing surface roughness.
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.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
This document describes a proposed eco-friendly electricity generator that uses piezoelectric materials. Piezoelectric materials generate an electric charge when mechanically strained. The document discusses using arrays of piezoelectric crystals embedded in structures like sidewalks, roads, and floors that are subjected to human or vehicle traffic. The vibrations and pressures from people walking or driving would strain the crystals and produce electric charges that could be harvested and stored in batteries. The document proposes several specific applications of this concept, such as embedding crystals in roads, sidewalks, dance floors, keyboards, and floor tiles. It suggests this could provide a pollution-free source of electricity for powering lights, buildings or other devices by capturing energy that is normally
Pezzol is an Italian company established in the 1950s that produces durable and comfortable safety footwear. It is now managed by the third generation of entrepreneurs and produces footwear for industries like petrochemical, automotive, construction, and services. The document provides details on Pezzol's various shoe models, their components, materials, and certifications.
El documento resume las principales características técnicas de la PlayStation 4, incluyendo su memoria RAM de 8 GB, arquitectura x86, GPU enfocada en el largo plazo, y mando Dualshock 4. Destaca que gracias a su memoria RAM, no es necesario guardar los juegos antes de apagar la consola. Además, la consola se actualizará automáticamente cuando esté en reposo. Se enfatiza que la PlayStation 4 será más social y permitirá compartir partidas en línea o mediante dispositivos móviles como la PS
game pi dao thien duong, pi dao thien duong, pi dao thien duong cho htc, pi dao thien duong cho java, pi dao thien duong cho may cui, pi dao thien duong cho nokia, pi đảo thiên đường cho android, tai game pi dao thien duong, tải game pi đảo thiên đường miễn phí
Análisis censo económico realizado por el inec 1Doris Oyos
El Instituto Nacional de Estadística y Censos de Ecuador llevó a cabo el Censo Nacional Económico en 2010, empadronando 511,130 establecimientos. La información recopilada incluye datos sobre identificación, ubicación, actividad económica, ingresos, costos, gastos, personal y clasificaciones industriales. Los datos permiten conocer el aparato productivo nacional y son útiles para la planificación de políticas económicas. Los establecimientos se categorizaron por tamaño según ing
Este documento proporciona instrucciones para descargar programas educativos y actividades de la página http://clic.xtec.cat/es/jclic/download.htm, incluyendo la necesidad de tener actualizado Java y cómo acceder a una biblioteca de actividades luego de completar la instalación.
Este documento presenta tres proyectos y evalúa cada uno según actividades que le gustan al autor, su potencial para satisfacer el crecimiento personal y la posibilidad de especializarse o poner en práctica lo aprendido. Luego describe los planes para la venta de arroz con leche en un bazar escolar, incluyendo la coordinación de padres, estudiantes y tareas, y el control del presupuesto y las ganancias esperadas. Finalmente, propone una encuesta y estrategia publicitaria para un nuevo producto.
Dokumen tersebut membahas tentang operasi masukan dan keluaran dalam bahasa pemrograman C++. Ia menjelaskan penggunaan fungsi cout untuk mengeluarkan output dan cin untuk menangkap input dari keyboard, beserta contoh kode program. Dokumen ini juga menjelaskan fungsi getch() dan getche() untuk membaca karakter input tanpa menekan enter.
This document provides information on Limtech, a South African electronic security solutions provider. It outlines Limtech's company profile, product solutions including access control, time and attendance, CCTV surveillance, fire detection and more. It provides examples of reference sites where Limtech has implemented solutions. Case studies give more detail on implementations for clients like Boxer Superstores and Vukani Gaming. The document also includes templates for evaluating client sites for proposed security systems.
1) Daniel tenta convencer sua namorada Alessandra a assistir um filme de terror obscuro e raro chamado "Os Demônios da Outra Dimensão".
2) Alessandra relutantemente aceita ir, mas não está animada.
3) Enquanto isso, ela pesquisa sobre o fascínio do medo na universidade e encontra um livro misterioso sobre o filme.
Este documento describe los programas informáticos y materiales didácticos multimedia utilizados en la educación. Explica que los programas informáticos permiten realizar tareas como antivirus, procesamiento de texto y hojas de cálculo, mientras que los materiales didácticos multimedia son recursos digitales diseñados para facilitar el aprendizaje de manera interactiva o no interactiva. También describe algunas ventajas como la motivación y la corrección inmediata, así como portales y plataformas que ofrecen estos materiales.
Una base de datos es un conjunto de datos organizados y relacionados entre sí que son recolectados y explotados por los sistemas de información de una empresa. Una base de datos contiene tablas con campos y registros que permiten ordenar y acceder a la información de manera lógica y coherente mediante lenguajes como SQL.
El documento habla sobre las dudas y decisiones personales que Juan Daniel Clavijo tiene que tomar como qué comer, a dónde ir, si irse de su ciudad o país, qué carrera elegir o con quién casarse. También menciona que las decisiones personales pueden afectar a los demás y que el miedo al cambio surge al pensar en irse de su ciudad o país, ya que uno sabe lo que decide pero no lo que le espera como resultado.
La tecnología 3G permite la transmisión de voz y datos a alta velocidad a través de redes de telefonía móvil. Ofrece servicios como videollamadas, acceso a Internet de banda ancha y transmisión de contenido multimedia. Aunque inicialmente estaba orientada a teléfonos móviles, ahora también permite el acceso a Internet a través de módems USB y algunos ordenadores portátiles. Su evolución es el estándar 4G LTE.
Bienvenidos a expotit@ 2015 hugo tabordaHugo Taborda
Este proyecto transversal busca que estudiantes de grados 6o y 8o analicen los cambios climáticos en la ciudad de Cali a través de diferentes áreas como inglés, ciencias sociales, sistemas y ciencias naturales. El proyecto incluye una salida pedagógica, recolección de información y uso de herramientas TIC para presentar hallazgos. Su objetivo es aplicar conocimientos, desarrollar habilidades investigativas y generar conciencia sobre problemas ambientales.
El documento describe cinco cualidades de liderazgo: iniciativa, visión, influencia, liderazgo y autoridad, y poder. La iniciativa se refiere a mantener orden y productividad cuando trabajando en grupo. La visión se refiere a ideas para hacer la clase más divertida. La influencia significa prevenir que amigos tomen decisiones poco saludables.
ANALYSIS OF CNC LATHE SPINDLE FOR MAXIMUM CUTTING FORCE CONDITION AND BEARING...AM Publications
The present CNC machine structures consist of spindle system which plays a relating to the quality of the
final product and the overall productivity and efficiency of the machine tool itself. The spindle of a CNC lathe
machine, which is rotated by the main motor, holds the cutting tool, which cuts the work piece, so that the cutting
forces are generated which effects the spindle accuracy directly. The forces which are affecting the CNC machine tool
spindle are tangential force (Ft), feed force (Fc), radial force (Fr) and will be estimated. Based on maximum cutting
force incurred the analysis will be carried out. The main objective is to find the static, fatigue analysis of spindle
structure for maximum cutting force condition and predicting life of bearings. From static analysis stress and
deformation of the spindle can be found. Stress obtained from the stress analysis is less than the yield strength of the
material and deformation of the spindle is very less which can be neglected. Equivalent alternating stress, factor of
safety and life of the spindle is found by fatigue analysis and which results are closely matches with the analytical
value
Vibration Isolation of an Air Compressor by using Sandwich Mount IsolatorsIRJET Journal
This document analyzes the vibration isolation performance of different composite isolators for an air compressor. It presents theoretical calculations of stiffness, damping coefficient, natural frequency, and transmissibility for different composite isolator combinations of rubber, felt and cork. Experimental testing is also conducted to measure acceleration and transmissibility of the air compressor mounted on different isolators. The results show that rubber composite isolators provide the best isolation with the lowest transmissibility. Felt composites provide the second best isolation. Cork composites have the highest transmissibility and provide the least vibration isolation. Both the theoretical and experimental results agree with each other. In conclusion, rubber isolators are most effective at isolating vibrations of the air compressor, followed
1) Disc brake squeal occurs due to coupling of vibration modes between the disc rotor and brake pad. Numerical modal analysis was performed to predict instability, and experimental testing was conducted to validate the results.
2) Ten modifications to the disc brake system were numerically analyzed to reduce instability. A modification involving a 10mm center slot in the brake pad eliminated instability in simulations.
3) Experimental squeal testing of the unmodified and modified brake systems showed that the modification successfully reduced squeal noise in the 5000-7000Hz range and kept sound levels below 80dB, validating the numerical simulations.
Free vibration analysis on cantilever beam-A reviewIRJET Journal
This document reviews free vibration analysis of cantilever beams made of different materials like brass, stainless steel, and aluminum. It discusses using experimental methods like an accelerometer and vibscanner software to determine the natural frequency and damping ratio of cantilever beams under different conditions. The objective is to analyze how surface cracks of varying sizes affect the natural frequency and damping ratio of beams made of different materials. Previous studies on vibration analysis of cantilever beams are also summarized. The methodology involves performing free vibration tests on brass, stainless steel and aluminum cantilever beams of specified dimensions and using vibscanner and omnitrend software to obtain frequency response graphs and calculate natural frequency and damping ratio from the graphs.
Assessment of Gearbox Fault DetectionUsing Vibration Signal Analysis and Acou...IOSR Journals
Maintenance is a set of organised activities that are carried out in order to keep an item in its best
operational condition with minimum cost acquired. Predictive maintenance (PdM) is one of the maintenance
program that recommends maintenance decisions based on the information collected through condition
monitoring techniques, statistical process control or equipment performance for the purpose of early detection
and elimination of equipment defects that could lead to unplanned downtime of machinery or unnecessary
expenditures. Particularly Gears and rolling element bearings are critical elements in rotating machinery, so
predictive maintenance is often applied to them. Fault signals of gearboxes or rolling-element bearings are nonstationary.
This paper concludes with a brief discussion on current practices of PDM methodologies such as
vibration analysis and Acoustic Emission analysis, which are widely used as they offers a complimentary tool
for health monitoring or assessment of gears in rotating machineries
Design of Engine Mount Bracket for a FSAE Car Using Finite Element AnalysisIJERA Editor
Engine mounts have an important function of containing firmly the power-train components of a vehicle. Correct geometry and positioning of the mount brackets on the chassis ensures a good ride quality and performance. As an FSAE car intends to be a high performance vehicle, the brackets on the frame that support the engine undergo high static and dynamic stresses as well as huge amount of vibrations. Hence, dissipating the vibrational energy and keeping the stresses under a pre-determined level of safety should be achieved by careful designing and analysis of the mount brackets. Keeping this in mind the current paper discusses the modeling, Finite Element Analysis, Modal analysis and mass optimization of engine mount brackets for a FSAE car. As the brackets tend to undergo continuous vibrations and varying stresses, the fatigue strength and durability calculations also have been done to ensure engine safety.
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.
This document summarizes a study that used Taguchi experimental design to optimize process parameters for friction stir welding of aluminum alloy 6063. Experiments varied tool rotational speed, welding speed, and axial force. Tensile testing found the highest strength (92 MPa) at a rotational speed of 1400 rpm, welding speed of 1.2 mm/sec, and axial force of 7 KN. Welding speed had the greatest influence on strength. Analysis of variance identified statistically significant parameters affecting strength. The optimal parameters achieved a joint efficiency of 70%.
FORMULATION OF A FIELD DATA BASED MODEL TO ESTIMATE THE NOISE LEVEL IN A DIES...IAEME Publication
The document presents a study on formulating a field data based model to estimate the noise level of a diesel generator set with an acoustic enclosure. The model will predict noise levels outside the enclosure based on parameters like engine load, enclosure thickness, foam thickness, and foam density. Field data on available generator enclosures with varying designs will be collected and used to develop the model, as conducting controlled experiments to generate design data would be too costly. The model aims to more accurately estimate noise reduction compared to existing theoretical models that make simplifying assumptions.
This document summarizes an experimental study that uses an artificial neural network (ANN) to predict vibrations and cutting forces during turning operations. Experimental tests were conducted under various cutting conditions on an EN-8 workpiece material. Vibrations were measured with an accelerometer and FFT analyzer, and cutting forces were measured with a dynamometer. The experimental data was then used to train an ANN model in Matlab to predict vibrations and forces based on cutting parameters like spindle speed, feed rate, and depth of cut. The goal was to develop an ANN model that could predict vibrations and forces to avoid tool failure and improve process efficiency, quality, and costs.
IRJET- Investigation of Stresses in Rear Half Axle of an AutomobileIRJET Journal
The document investigates stresses in the rear half axle of an automobile using finite element analysis. It considers various cases like increasing angular velocity, inclination of the axle, and additional loads. Von-Mises and maximum principal stresses increase with higher angular velocity and additional loads. At a constant speed, stresses increase up to a certain inclination angle and then remain similar. Comparing FEA results to analytical calculations shows good agreement at higher angular velocities. The maximum stresses occur at the junction of the axle and gear.
A Study of Reduction in the Vibrations of Steering Wheel of Agricultural TractorIJERA Editor
Steering wheel vibration is one of the major factor in determining the operator’s comfort in an agricultural tractor. Over the past 20 years automobile quality and consumer perceptions and demands have been an increasing part of the vehicle engineering process. This project deals with study of vibration related issues in steering wheel of tractor. The design and analysis of steering system plays a major role for determining the root cause for the problem. Main sources of steering wheel vibration are found to be engine imbalance, resonance of steering system, lesser damping, road / field induced vibration. Steering vibration study was conducted on various tractor models and one tractor was identified for improvement. Upon detailed analysis on that particular tractor, it was found that the resonance of steering system with engine excitation is the root cause for excessive vibration. Various methods such as shifting the natural frequency away from the second order engine frequency and increasing damping coefficient to reduce the vibration amplitude at resonance are considered to reduce vibrations due to resonance. Axial damper concept is used for vibration reduction. Analysis is done in Matlab Simulink with two degree of freedom model with base excitation.
PREDICTION AND CONTROL OF LATHE MACHINE TOOL VIBRATION BY USING PASSIVE DAMPING ijiert bestjournal
In machining operation,the quality of surface finish is an important requirement for many turned work- pieces. Thus the choice of optimized cutting parameters is very important for controlling the required surface quality. The focus of present experimental study is to opt imize the cutting parameters using two performance measures,machine tool vibration and work-piece surface roughness The prediction and control of vibration between the tool and work piece is important as guidel ine to the machine tools user for an optimal selection of depth of cut,cutting speed,tool feed rate to minimize the vibration. In machining operation there are different variables deleterious the desire d result. In this process the behavior of machine tool,cutting tool life and cutting tool vibration are the complex pheno menon which influences on the dimensional precision of the components to be machined,the cutting tool vibrations are mainly influenced by cutting parameters like cutting speed,depth of cut and tool feed rate. In this project work,CNC lathe cutting tool vibrations are controlled the tool holder is supported wit h and without damping pad. To increase the accuracy of experiments,Taguchi L9 experimental design me thod has used in this experiment. Experimental result are validate with analysis of variance (ANOVA) and regression analysis to identify the influences of the different cutting parameter on the vibra tion of cutting tool.
1) The document discusses using discrete wavelet transforms to analyze vibration signals from roller bearings to detect faults. It proposes a new feature - summing the squared wavelet decomposition coefficients at each level - and compares it to the traditional energy-based feature.
2) An experiment is described where vibration signals are collected from a test rig under normal conditions and with introduced inner race, outer race, and combined faults. The signals are decomposed using discrete wavelet transforms.
3) Features are then extracted from the wavelet decompositions using both the proposed summed squared coefficient feature and the traditional energy-based feature. A decision tree is used to classify the features and determine which feature performs better at detecting the faults.
Vibration Analysis of a Centrifugal PumpIRJET Journal
This document summarizes a study on vibration analysis of a centrifugal pump. Modal, shock spectrum, random, and harmonic analyses were performed on a 3D model of the pump to determine its natural frequencies and response to different loading conditions. Modal analysis identified the pump's first six natural frequencies between 86.5-1061.6 Hz. Shock spectrum analysis showed maximum deformation of 270 mm and equivalent stress of 2.94e5 MPa. Random analysis found deformation varied along axes with maximum equivalent stress of 1483.3 MPa. Harmonic analysis identified peak responses between 0.023-0.505 mm deformation and 0.12-543.09 MPa stress. The vibration analysis provided insights into the pump
This article is all about the critical problem occur in ball bearing rolling element bearing are vital components in almost every machines or applications with moving or rotating parts therefore it is great importance to fully understand the behaviour and the nature of the bearing. Now adays there
are good ways to predict the expected life of a rolling element bearing but there is no way to calculate the exact service life and which can lead to serious and costly consequences in the event of breakdown of the bearing. Since for the diagnosis of ball bearing faults which comes through vibrations.
This document summarizes research on analyzing ball bearings through finite element modeling (FEM). It discusses using FEM to predict ball bearing life and diagnose faults. The research aims to fully understand ball bearing behavior. It also analyzes ball bearings using nonlinear vibration absorbers, which can reduce vibrations at multiple frequencies. The key concepts examined are the absorbers' amplitude-dependent behavior and existence of an energy threshold required for effective vibration reduction. Dimensional analysis is applied to generalize the energy threshold concept. The research seeks to add insights that help practically implement nonlinear vibration absorbers.
This document summarizes research on analyzing ball bearings through finite element modeling (FEM). It discusses using FEM to predict ball bearing life and diagnose faults. The research aims to fully understand ball bearing behavior. It also analyzes ball bearings using nonlinear vibration absorbers, which can reduce vibrations at multiple frequencies. The key concepts examined are the absorbers' amplitude-dependent behavior and existence of an energy threshold required for effective vibration reduction. Dimensional analysis is applied to generalize the energy threshold concept. The research seeks to add insights that can help practically implement vibration absorbers.
Enhancing the Submersible Pump Rotor Performance by Taguchi Optimization Tech...IRJET Journal
The document describes an experimental study that used Taguchi optimization techniques to improve the surface roughness of rotor components made from silicon steel for submersible pumps. Three turning cutting parameters - cutting speed, feed rate, and depth of cut - were investigated at three levels each using an orthogonal array experiment. Analysis of variance was conducted on the surface roughness measurements to determine the most significant parameters. The results showed that cutting speed had the greatest influence on surface roughness, followed by depth of cut, while feed rate was less significant. This provides information on optimal cutting conditions for machining silicon steel rotors to reduce surface roughness.
Finite Element Analysis and Topography Optimization of Lower Arm of Double Wi...IJERA Editor
The suspension system is one of the most important components of vehicle, which directly affects the safety, performance, noise level and style of it. The vehicle suspension system is responsible for driving comfort and safety as the suspension carries the vehicle-body and transmits all forces between body and road. Structure optimization techniques under static load conditions have been widely used in automotive industry for lightweight and performance improvement of modern cars. However, these static load conditions could not represent all the severe situations of automobile parts which subjected to complex loads varying with time, especially for lower control arm of front suspension. This paper deals with Finite Element Analysis of the Lower arm suspension of double wishbone suspension which consist the stress optimization under static loadings. Lower arm suspension has been modeled using Unigraphics .In first stage of analysis area of maximum stress was identified. These analysis were carried using Altair Hyperworks and solver used is Abacus. In order to reduce stresses and to improve structural strength Topography optimization approach is carried out in Hyperworks in which a design region for a given part is defined and a pattern of shape variable-based reinforcements within that region is generated to increase Stiffness.
TrustArc Webinar - 2024 Global Privacy SurveyTrustArc
How does your privacy program stack up against your peers? What challenges are privacy teams tackling and prioritizing in 2024?
In the fifth annual Global Privacy Benchmarks Survey, we asked over 1,800 global privacy professionals and business executives to share their perspectives on the current state of privacy inside and outside of their organizations. This year’s report focused on emerging areas of importance for privacy and compliance professionals, including considerations and implications of Artificial Intelligence (AI) technologies, building brand trust, and different approaches for achieving higher privacy competence scores.
See how organizational priorities and strategic approaches to data security and privacy are evolving around the globe.
This webinar will review:
- The top 10 privacy insights from the fifth annual Global Privacy Benchmarks Survey
- The top challenges for privacy leaders, practitioners, and organizations in 2024
- Key themes to consider in developing and maintaining your privacy program
Goodbye Windows 11: Make Way for Nitrux Linux 3.5.0!SOFTTECHHUB
As the digital landscape continually evolves, operating systems play a critical role in shaping user experiences and productivity. The launch of Nitrux Linux 3.5.0 marks a significant milestone, offering a robust alternative to traditional systems such as Windows 11. This article delves into the essence of Nitrux Linux 3.5.0, exploring its unique features, advantages, and how it stands as a compelling choice for both casual users and tech enthusiasts.
Infrastructure Challenges in Scaling RAG with Custom AI modelsZilliz
Building Retrieval-Augmented Generation (RAG) systems with open-source and custom AI models is a complex task. This talk explores the challenges in productionizing RAG systems, including retrieval performance, response synthesis, and evaluation. We’ll discuss how to leverage open-source models like text embeddings, language models, and custom fine-tuned models to enhance RAG performance. Additionally, we’ll cover how BentoML can help orchestrate and scale these AI components efficiently, ensuring seamless deployment and management of RAG systems in the cloud.
Climate Impact of Software Testing at Nordic Testing DaysKari Kakkonen
My slides at Nordic Testing Days 6.6.2024
Climate impact / sustainability of software testing discussed on the talk. ICT and testing must carry their part of global responsibility to help with the climat warming. We can minimize the carbon footprint but we can also have a carbon handprint, a positive impact on the climate. Quality characteristics can be added with sustainability, and then measured continuously. Test environments can be used less, and in smaller scale and on demand. Test techniques can be used in optimizing or minimizing number of tests. Test automation can be used to speed up testing.
Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdfMalak Abu Hammad
Discover how MongoDB Atlas and vector search technology can revolutionize your application's search capabilities. This comprehensive presentation covers:
* What is Vector Search?
* Importance and benefits of vector search
* Practical use cases across various industries
* Step-by-step implementation guide
* Live demos with code snippets
* Enhancing LLM capabilities with vector search
* Best practices and optimization strategies
Perfect for developers, AI enthusiasts, and tech leaders. Learn how to leverage MongoDB Atlas to deliver highly relevant, context-aware search results, transforming your data retrieval process. Stay ahead in tech innovation and maximize the potential of your applications.
#MongoDB #VectorSearch #AI #SemanticSearch #TechInnovation #DataScience #LLM #MachineLearning #SearchTechnology
UiPath Test Automation using UiPath Test Suite series, part 6DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 6. In this session, we will cover Test Automation with generative AI and Open AI.
UiPath Test Automation with generative AI and Open AI webinar offers an in-depth exploration of leveraging cutting-edge technologies for test automation within the UiPath platform. Attendees will delve into the integration of generative AI, a test automation solution, with Open AI advanced natural language processing capabilities.
Throughout the session, participants will discover how this synergy empowers testers to automate repetitive tasks, enhance testing accuracy, and expedite the software testing life cycle. Topics covered include the seamless integration process, practical use cases, and the benefits of harnessing AI-driven automation for UiPath testing initiatives. By attending this webinar, testers, and automation professionals can gain valuable insights into harnessing the power of AI to optimize their test automation workflows within the UiPath ecosystem, ultimately driving efficiency and quality in software development processes.
What will you get from this session?
1. Insights into integrating generative AI.
2. Understanding how this integration enhances test automation within the UiPath platform
3. Practical demonstrations
4. Exploration of real-world use cases illustrating the benefits of AI-driven test automation for UiPath
Topics covered:
What is generative AI
Test Automation with generative AI and Open AI.
UiPath integration with generative AI
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
UiPath Test Automation using UiPath Test Suite series, part 5DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 5. In this session, we will cover CI/CD with devops.
Topics covered:
CI/CD with in UiPath
End-to-end overview of CI/CD pipeline with Azure devops
Speaker:
Lyndsey Byblow, Test Suite Sales Engineer @ UiPath, Inc.
Full-RAG: A modern architecture for hyper-personalizationZilliz
Mike Del Balso, CEO & Co-Founder at Tecton, presents "Full RAG," a novel approach to AI recommendation systems, aiming to push beyond the limitations of traditional models through a deep integration of contextual insights and real-time data, leveraging the Retrieval-Augmented Generation architecture. This talk will outline Full RAG's potential to significantly enhance personalization, address engineering challenges such as data management and model training, and introduce data enrichment with reranking as a key solution. Attendees will gain crucial insights into the importance of hyperpersonalization in AI, the capabilities of Full RAG for advanced personalization, and strategies for managing complex data integrations for deploying cutting-edge AI solutions.
In the rapidly evolving landscape of technologies, XML continues to play a vital role in structuring, storing, and transporting data across diverse systems. The recent advancements in artificial intelligence (AI) present new methodologies for enhancing XML development workflows, introducing efficiency, automation, and intelligent capabilities. This presentation will outline the scope and perspective of utilizing AI in XML development. The potential benefits and the possible pitfalls will be highlighted, providing a balanced view of the subject.
We will explore the capabilities of AI in understanding XML markup languages and autonomously creating structured XML content. Additionally, we will examine the capacity of AI to enrich plain text with appropriate XML markup. Practical examples and methodological guidelines will be provided to elucidate how AI can be effectively prompted to interpret and generate accurate XML markup.
Further emphasis will be placed on the role of AI in developing XSLT, or schemas such as XSD and Schematron. We will address the techniques and strategies adopted to create prompts for generating code, explaining code, or refactoring the code, and the results achieved.
The discussion will extend to how AI can be used to transform XML content. In particular, the focus will be on the use of AI XPath extension functions in XSLT, Schematron, Schematron Quick Fixes, or for XML content refactoring.
The presentation aims to deliver a comprehensive overview of AI usage in XML development, providing attendees with the necessary knowledge to make informed decisions. Whether you’re at the early stages of adopting AI or considering integrating it in advanced XML development, this presentation will cover all levels of expertise.
By highlighting the potential advantages and challenges of integrating AI with XML development tools and languages, the presentation seeks to inspire thoughtful conversation around the future of XML development. We’ll not only delve into the technical aspects of AI-powered XML development but also discuss practical implications and possible future directions.
Dr. Sean Tan, Head of Data Science, Changi Airport Group
Discover how Changi Airport Group (CAG) leverages graph technologies and generative AI to revolutionize their search capabilities. This session delves into the unique search needs of CAG’s diverse passengers and customers, showcasing how graph data structures enhance the accuracy and relevance of AI-generated search results, mitigating the risk of “hallucinations” and improving the overall customer journey.
How to Get CNIC Information System with Paksim Ga.pptxdanishmna97
Pakdata Cf is a groundbreaking system designed to streamline and facilitate access to CNIC information. This innovative platform leverages advanced technology to provide users with efficient and secure access to their CNIC details.
“An Outlook of the Ongoing and Future Relationship between Blockchain Technologies and Process-aware Information Systems.” Invited talk at the joint workshop on Blockchain for Information Systems (BC4IS) and Blockchain for Trusted Data Sharing (B4TDS), co-located with with the 36th International Conference on Advanced Information Systems Engineering (CAiSE), 3 June 2024, Limassol, Cyprus.
Sudheer Mechineni, Head of Application Frameworks, Standard Chartered Bank
Discover how Standard Chartered Bank harnessed the power of Neo4j to transform complex data access challenges into a dynamic, scalable graph database solution. This keynote will cover their journey from initial adoption to deploying a fully automated, enterprise-grade causal cluster, highlighting key strategies for modelling organisational changes and ensuring robust disaster recovery. Learn how these innovations have not only enhanced Standard Chartered Bank’s data infrastructure but also positioned them as pioneers in the banking sector’s adoption of graph technology.
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/building-and-scaling-ai-applications-with-the-nx-ai-manager-a-presentation-from-network-optix/
Robin van Emden, Senior Director of Data Science at Network Optix, presents the “Building and Scaling AI Applications with the Nx AI Manager,” tutorial at the May 2024 Embedded Vision Summit.
In this presentation, van Emden covers the basics of scaling edge AI solutions using the Nx tool kit. He emphasizes the process of developing AI models and deploying them globally. He also showcases the conversion of AI models and the creation of effective edge AI pipelines, with a focus on pre-processing, model conversion, selecting the appropriate inference engine for the target hardware and post-processing.
van Emden shows how Nx can simplify the developer’s life and facilitate a rapid transition from concept to production-ready applications.He provides valuable insights into developing scalable and efficient edge AI solutions, with a strong focus on practical implementation.
Observability Concepts EVERY Developer Should Know -- DeveloperWeek Europe.pdfPaige Cruz
Monitoring and observability aren’t traditionally found in software curriculums and many of us cobble this knowledge together from whatever vendor or ecosystem we were first introduced to and whatever is a part of your current company’s observability stack.
While the dev and ops silo continues to crumble….many organizations still relegate monitoring & observability as the purview of ops, infra and SRE teams. This is a mistake - achieving a highly observable system requires collaboration up and down the stack.
I, a former op, would like to extend an invitation to all application developers to join the observability party will share these foundational concepts to build on:
Observability Concepts EVERY Developer Should Know -- DeveloperWeek Europe.pdf
Ii3314231428
1. V.S.Chavan, R.Askhedkar, S.B.Sanap/ International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 3, May-Jun 2013, pp.1423-1428
1423 | P a g e
“Analysis Of Anti Vibration Mounts For Vibration Isolation In
Diesel Engine Generator Set”
V.S.CHAVAN1
, R.ASKHEDKAR2
,S.B.SANAP3
1
P.G student, Mechanical Engineering Department.Sinhgad College of Engineering,Pune,
University of Pune,India.
2
General Manager, Kirloskar Oil Engines Ltd Pune, India.
3
Assistant Professor, Mechanical Engineering Department.Sinhgad College of Engineering, Pune, University of
Pune, India.
Abstract
Engine vibrations have been one of the
major problems for the engine manufacturers in
the world. The engine excitation forces, arising
from the gas pressure and unbalance forces are
the sources of vibrations.Anti Vibration
Mounts(AVMs) are the structures used to absorb
the vibrations and dampen the harm causing
forces. Mount result in a system which is
modeled as mass/spring/damper. The elastomer
is under vertical and shear load at the same time.
The engine is bolted freely on mount which
dampens the vibrations going to the base
frame/canopy. The validation of their
characteristics is implemented in a single degree
of freedom system with response to frequency
domain. The engine is mounted freely on the
AVM’s which helps to dampen the vibrations to
base frame. Frequency Response Function(FRF)
is derived for analysis, analytically and
Computer Aided Engineering(CAE).
Comparative is also made to suggest which
material is to be selected for AVMs. A single
AVM is analyzed for modal and frequency
response with the upper plate as a part of engine
structure and the bottom plate as the base frame.
Comparative study of the two conditions using
materials and also without mount and with
mount is analyzed.
Keywords: Anti-Vibration Mounts (AVMs),
CAE,Elastomers,Engine,FRF,Vibrations.
I. Introduction
Engine vibrations have been one of the
major problems for the engine manufacturers in the
world. In a competitive world market noise and
vibration reduction ranks high where the customers
perception is to have overall quality of the system
influenced by how quiet and smooth running the
system operates[1]. The situation aggravates if the
operational frequencies of the engine lies near the
natural frequencies of the engine [11]. AVMs play a
major role to reduce the overall vibrations from the
engine to base frame structure.To reduce the overall
vibrations of the engine towards base and the
canopy structure of the power generating set, Anti-
Vibration Mounts (AVM’s) are used.AVM consist
of the rubber/elastomer sandwiched between the two
metal cover plates.The elastomer used leads to
development of non-linear behavior of the
mount[4][7].The ability of an elastomer to convert
energy of motion allows it to absorb vibration. Its
viscouscomponent is most useful for absorbing low
frequency loadssuch as a single large impact[8].
Alternatively, the elastic component can return the
elastomericcomponent quickly to its original state,
ready for the next cycle of deformation, and thus it
can copewith low to higher frequency loads [9].
II. Methodology
The stages involved for the analysis of the
condition starts with the calculation of natural
frequencies of the system and the mounts associated
to those. The mounts are selected dependent on the
results and the load deflection curves. Whether
mounts are capable to attenuated the vibrations is
based on the percentage isolation which is obtained
by mount material selected.The analytical results are
obtained for selected mounts with the Voigt model
which consists of the spring and damper
system.Nonlinear static analysis is done in ANSYS
12.0 to get the modal analysis, stress and
displacements values.The FRF and dynamic
stiffness graphs are obtained to analyse for material
selection. The pre-processing work is done in
HYPERMESH to get the desired mesh pattern. The
mounts consist of elastomer so the
processingfrequency analysis of the mount goes in
nonlinear phase carried out in NASTRAN.The FRF
analysis of the mount is done which is compared
with that of the simply bolted engine structure and
base frame and the advantages are stated. The CAE
result validation is done with the analytical,
experimental testing for the vibrational testing using
sensors and the results are stated.
III. Analytical Method
The mounting system effectiveness is
commonlymeasured as the Transmissibility. The
inertia forcedeveloped in a reciprocating engine or
unbalancedforces produced in any other rotating
2. V.S.Chavan, R.Askhedkar, S.B.Sanap/ International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 3, May-Jun 2013, pp.1423-1428
1424 | P a g e
machineryshould be isolated from the foundationso
that the adjoining structure is not set into
heavyvibrations. Transmissibility is the amount of
enginevibration force which is transmitted through
themounting system to the vehicle structure as
apercentage. A transmissibility of 0.4 or less
ofengine idle speed is necessary for a good
mountingsystem. In the region of attention rather
thanreferring to the transmissibility, we use
theisolation efficiency as a measure reduction
ofvibration input usually as a percentage
valueoccurring for a particular disturbing frequency.
Table 1 shows the percentage isolation values for
different damping ratio and frequency ratio for
selection of mount materials.
Table 1. Percentage Isolation for different damping ratio and frequency ratio.
Frequency
ratio 0 1.5 2 2.5 3 3.5 4 4.5 5
Damping
Ratio % Isolation
0 0 20 66.66667 80.95238 87.5 91.11111 93.33333 94.80519 95.83333
0.05 0 19.68123 66.08183 80.38839 86.95878 90.58695 92.82233 94.30501 95.34254
0.1 0 18.78383 64.41383 78.80004 85.46345 89.17067 91.47462 93.01873 94.11255
0.15 0 17.45891 61.88188 76.42977 83.28839 87.16689 89.6195 91.29396 92.50306
0.2 0 15.8922 58.75385 73.53835 80.6904 84.82404 87.49231 89.3497 90.71523
0.3 0 12.65538 51.65577 66.98263 74.88871 79.67603 82.88436 85.18792 86.92559
Fig.1Isolation against the Damping ratio.
The analytical calculations are done for the rubber and neoprene is done and the values obtained for those are as
follows:
Table.2 Comparison of Rubber and Neoprene parameters.
Material Stiffness(N/mm)
Damping
Ratio
Natural
Frequency(Hz)
Frequency
Ratio %Isolation(graph)
Rubber 693.13 0.03 18 2.77 84.813
Neoprene 722.022 0.05 10.08 4.63 95.316
3. V.S.Chavan, R.Askhedkar, S.B.Sanap/ International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 3, May-Jun 2013, pp.1423-1428
1425 | P a g e
The above shown Fig.1 is plotted from the values
derived in the Table no.1.The transmissibility graph
shows the desired isolation zone for the frequency
ration higher than .From the above analytical
calculations and the graphs plot from them the
stiffness, damping ratio, frequency ratio and
percentage isolation delivered by the rubber material
is less than neoprene material which is used in the
mounts.
IV. Frequency Response Analysis
The frequency response function and
dynamic stiffness of engine are calculated
analytically for a range of frequency (0 Hz to 100
Hz) and shown in Fig.2 and Fig.3. In case of
admittance, accelerancethe rubber and neoprene
where the graph are compared.
Fig.2Calculated admittance for both mounts.
Fig.3Calculated Dynamic Stiffness for both mounts.
The figure shows that the dynamic stiffness is frequency dependent. The dynamic stiffness is increasing when
the frequency increased after the resonance of 40 Hz. For the excitation frequency before resonance, the
dynamic stiffness decreased while the excitation frequency increased.
Fig.4Calculated Accelerance for both mounts.
The minimum dynamic stiffness occurred at natural
frequency of the system where small applied force
resulted in large deformation. Similar trend was
found where the measurement on an isolator is done
by resonant method. The analytical calculation is
done up to 60 Hz. Minimum dynamic stiffness is
found at resonant frequency and the values of
dynamic stiffness increased when the frequency
increases above the natural frequency. The response
of the mount in case of the accelerence is calculated
in Fig.4 with range of 0Hz to 60 Hz for rubber and
neoprene mount. The neoprene shows the higher
0
0.00002
0.00004
0.00006
0 20 40 60
Admittancem/N
Frequency[Hz]
Admittance V/s Frequency
Admittance(Rubber)
Admittance(Neoprene)
-1000000
1000000
3000000
5000000
7000000
0 20 40 60
DynamicStiffnessN/m
Frequency[Hz]
Dynamic Stiffness V/s Frequency
Dynamic Stiffness(Rubber)
Dynamic Stiffness(Neoprene)
0
0.005
0.01
0 10 20 30 40 50 60
Accelerance
m/s^2/N
Frequency[Hz]
Accelerance V/s Frequency
Rubber
Neoprene
4. V.S.Chavan, R.Askhedkar, S.B.Sanap/ International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 3, May-Jun 2013, pp.1423-1428
1426 | P a g e
response at 10Hz approximate and rubber at 18Hz,
comparative rubber shows the higher acceleration
response than neoprene.
V. CAE Results
The CAE results are compared for frequency
response where the unit load applied on the upper
surface of the mount and the response obtained on
the bottom plate as shown in the Fig.5 .The FRF in
terms of accelerance and admittance for the mount
with rubber, neoprene and without mount conditions
are compared in Fig.6 and Fig.7.
Fig.5 Meshed mount with bolt simulated on plate.
The peaks are basically observed where the frequency matches the natural frequency of these mounts. Fig.6
shows peak in the without mount and the rubber mount are observed near the operating condition of engine
whereas that of the neoprene mount is far from it.
Fig.6Simulation results ofaccelerance ( -without mount, - rubber, -neoprene).
There the aceelerance at the bottom plate are reported with the peak for without mount conditions within the
operation conditions which is basically high vibration transfer whereas for the rubber mount the peaks gets
shifted to avoid the system resonance. The neoprene mount have the least level of accelerance in the operating
range and also have achieved in shifting the peaks.
Fig.7Simulation results of admittance ( -without mount, - rubber, -neoprene).
5. V.S.Chavan, R.Askhedkar, S.B.Sanap/ International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 3, May-Jun 2013, pp.1423-1428
1427 | P a g e
The response in terms of displacement (admittance) is also shown in fig. where the plate without mount shows a
higher displacement in the range 22Hz to 30Hz, compared to those with neoprene and rubber mounts. The
shows comparatively the least displacement at those particular frequencies ranges.
VI. Experimental Results
The analytical and CAE results have shown that the neoprene material mounts comparatively shows the best
suitable characteristics for the vibration absorbing system. Here the selected Rubber and Neoprene material
mounts are tested on the actual engine and the results are shown with actual mount position shown in
Fig.8where measure peak was observed at operating frequency of 25 Hz.
Fig.8 Actual location of mount at engine base.
Fig.9 Experimental autospectrum results at base of engine without mount condition.
Fig.9 shows the autospectrum results of the engine base where the mounts are not used and the vibration levels
are measured with the overall level of 35.4 mm/s which is much high as per the industrial standards.
Fig.10 Experimental autospectrum results at base of engine below mounts (rubber mounts).
Fig.10 shows the vibration levels with the rubber mount used and the overall vibrations reduced to 3.69 mm/s
which is about 89.72% which fall well within the industrial standards.
6. V.S.Chavan, R.Askhedkar, S.B.Sanap/ International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 3, May-Jun 2013, pp.1423-1428
1428 | P a g e
Fig.11 Experimental autospectrum results at base of engine below mounts (neoprene mounts).
The Fig.11 shows the experimental results with the neoprene material mount used and the overall vibration level
measured were 2.69 mm/s which is 93.44% which very well matches with the analytical calculations made in
the section 3.
VII. Conclusion
Analytical calculations are made with the
mount as single degree of freedom mass spring
damper system and the frequency responses are
obtained. A comparative analysis for the selection
of material is done where rubber and neoprene
were suitable with the higher percentage isolation
obtained. The results ofFRF from analytical and
CAE match well and the neoprene shows that the
neoprene material gives out the higher vibration
isolation. The dynamic stiffness is frequency
dependent where it is increasing when the
frequency increased after the resonance. For the
excitation frequency before resonance, the dynamic
stiffness decreased while the excitation frequency
increased. The minimum dynamic stiffness
occurred at natural frequency of the system where
small applied force resulted in large
deformation.The dynamic conditions stated at the
bottom of engine without mount and with mount
compared shows that mounts plays a vital role in
absorption of engine vibrations towards the base
frame. The deviation in total isolation values in
analytical and experimental is of 1.8%.
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