Design Of A Hydraulic Bulge Test Apparatus
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Design Of A Hydraulic Bulge Test Apparatus
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Author : Cheok Wei Koh
language : en
Publisher:
Release Date : 2008
Design Of A Hydraulic Bulge Test Apparatus written by Cheok Wei Koh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
The various equi-biaxial tension tests for sheet metal were studied and compared to determine the most appropriate equipping in the Impact and Crashworthiness Laboratory, MIT, for the testing of Advanced High Strength Steel. The hydraulic bulge test was identified as the most economical solution. The equipment was designed to accommodate material strength of up to 1000MPa with plate thickness between 1.0mm and 1.8mm. The design process is explained in detail with focus on the challenges faced. The closed-form solution for the hydraulic bulge test was also derived. Two methods of deriving the stress-strain relationship in the material were also proposed. The first method uses the optical measuring system to determine displacement and surface strain distribution. The second method uses geometrical approximations and dome height measurements. A new experimental technique and step-by-step procedure were also developed. Tests were successfully conducted using galvanized steel to demonstrate the effectiveness of the hydraulic bulge test apparatus in achieving the equi-biaxial stress state in sheet metal.
On The Hydraulic Bulge Testing Of Thin Sheets
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Author : John Philip Mersch
language : en
Publisher:
Release Date : 2013
On The Hydraulic Bulge Testing Of Thin Sheets written by John Philip Mersch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
The bulge test is a commonly used experiment to establish the material stress-strain response at the highest possible strain levels. It consists of a metal sheet placed in a die with a circular opening. It is clamped in place and inflated with hydraulic pressure. In this thesis, a bulge testing apparatus was designed, fabricated, calibrated and used to measure the stress-strain response of an aluminum sheet metal and establish its onset of failure. The custom design incorporates a draw-bead for clamping the plate. A closed loop controlled servohydraulic pressurization system consisting of a pressure booster is used to pressurize the specimens. Deformations of the bulge are monitored with a 3D digital image correlation (DIC) system. Bulging experiments on 0.040 in thick Al-2024-T3 sheets were successfully performed. The 3D nature of the DIC enables simultaneous estimates of local strains as well as the local radius of curvature. The successful performance of the tests required careful design of the draw-bead clamping arrangement. Experiments on four plates are presented, three of which burst in the test section as expected. Finite deformation isotropic plasticity was used to extract the true equivalent stress-strain responses from each specimen. The bulge test results correlated well with the uniaxial results as they tended to fall between tensile test results in the rolling and transverse directions. The bulge tests results extended the stress-strain response to strain levels of the order of 40%, as opposed to failure strains of the order of 10% for the tensile tests. Three-dimensional shell and solid models were used to investigate the onset of localization that precedes failure. In both models, the calculated pressure-deformation responses were found to be in reasonable agreement with the measured ones. The solid element model was shown to better capture the localization and its evolution. The corresponding pressure maximum was shown to be imperfection sensitive.
Design And Modeling Of Mechanical Systems Ii
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Author : Mnaouar Chouchane
language : en
Publisher: Springer
Release Date : 2015-03-24
Design And Modeling Of Mechanical Systems Ii written by Mnaouar Chouchane and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-24 with Technology & Engineering categories.
This book offers a collection of original peer-reviewed contributions presented at the 6th International Congress on Design and Modeling of Mechanical Systems (CMSM’2015), held in Hammamet, Tunisia, from the 23rd to the 25th of March 2015. It reports on both recent research findings and innovative industrial applications in the fields of mechatronics and robotics, dynamics of mechanical systems, fluid structure interaction and vibroacoustics, modeling and analysis of materials and structures, and design and manufacturing of mechanical systems. Since its first edition in 2005, the CMSM Congress has been held every two years with the aim of bringing together specialists from universities and industry to present the state-of-the-art in research and applications, discuss the most recent findings and exchange and develop expertise in the field of design and modeling of mechanical systems. The CMSM Congress is jointly organized by three Tunisian research laboratories: the Mechanical Engineering Laboratory of the National Engineering School of Monastir; the Mechanical Laboratory of Sousse, part of the National Engineering School of Sousse; and the Mechanical, Modeling and Manufacturing Laboratory at the National Engineering School of Sfax.
Hydraulic Bulge Device For Sheet Metal Testing
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Author : H. J. Kleemola
language : en
Publisher:
Release Date : 1975
Hydraulic Bulge Device For Sheet Metal Testing written by H. J. Kleemola and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Sheet-metal categories.
Design And Fabrication Of An Instrument To Test The Mechanical Behavior Of Aluminum Alloy Sheets During High Temperature Gas Pressure Blow Forming
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Author : Ricardo Vanegas Moller
language : en
Publisher:
Release Date : 2008
Design And Fabrication Of An Instrument To Test The Mechanical Behavior Of Aluminum Alloy Sheets During High Temperature Gas Pressure Blow Forming written by Ricardo Vanegas Moller and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Hydraulic bulge forming has been used as a method to determine the properties of sheet metal alloys in biaxial stretching at room temperature. Gas-pressure bulge forming alleviates the issues of using hydraulic fluids when the tests are conducted at high temperatures (above 200°C). Testing a sheet metal alloy by gas-pressure blow-forming (GPBF) under controlled temperature and pressure conditions requires an accurate and reliable mechanism that delivers repeatable results. It was the purpose of this work to design and implement such an instrument. This instrument should deliver real-time data for material displacement during forming, which can then be used to better understand material plastic response and formability. Four different subsystems within this mechanism must interact, but also have enough independence for analysis and for assembly purposes. The combined sub-systems produced a GPBF apparatus capable of forming a sheet aluminum alloy AA5182 with a thickness of 1.5 mm into a dome with a height nearly equal to its radius under a constant gas pressure as low as 40 psi at 450°C. This GPBF apparatus produced, for the first time, in-situ data for dome peak displacement during gas-pressure bulge forming of AA5182 sheet at 450°C.
Titanium Alloys
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Author : Jan Sieniawski
language : en
Publisher: BoD – Books on Demand
Release Date : 2013-05-15
Titanium Alloys written by Jan Sieniawski and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-05-15 with Technology & Engineering categories.
The book contains six chapters and covers topics dealing with biomedical applications of titanium alloys, surface treatment, relationships between microstructure and mechanical and technological properties, and the effect of radiation on the structure of the titanium alloys.
Tensile Testing Of Thin Films
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Author : D. T. Read
language : en
Publisher:
Release Date : 1997
Tensile Testing Of Thin Films written by D. T. Read and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Strength of materials categories.
Five technical papers covering the development of a set of techniques for measuring the tensile properties of thin films are gathered here. Also included are drawings of the mechanical components of the apparatus and listings of two computer programs. Additional necessary parts include a computer, instrumentation, two piezoelectric stacks, and an appropriate platform equipped with a microscope. Piezoelectric stacks are used as actuators. Noncontacting eddy-current displacement sensors measure both the tensile displacement and the force.Closed-loop feedback control allows a variety of test programs. The maximum available displacement is about 50 um, and the maximum available force is about 0.3 N. The resolution of displacement is about 25 nm, and the resolution of force is about 100 uN. Cyclic loading has been demonstrated for cycles as short as 20 s.
Materials Design And Applications
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Author : Lucas F. M. da Silva
language : en
Publisher: Springer
Release Date : 2017-03-11
Materials Design And Applications written by Lucas F. M. da Silva and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-11 with Technology & Engineering categories.
This volume features fundamental research and applications in the field of the design and application of engineering materials, predominantly within the context of mechanical engineering applications. This includes a wide range of materials engineering and technology, including metals, e.g., polymers, composites, and ceramics. Advanced applications would include manufacturing in the new or newer materials, testing methods, multi-scale experimental and computational aspects. This book features fundamental research and applications in the design of engineering materials, predominantly within the context of mechanical engineering applications such as automobile, railway, marine, aerospace, biomedical, pressure vessel technology, and turbine technology. It covers a wide range of materials, including metals, polymers, composites, and ceramics. Advanced applications include the manufacturing of new materials, testing methods, multi-scale experimental and computational aspects. p>
Analysis And Optimization Of Sheet Metal Forming Processes
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Author : Amrut Mulay
language : en
Publisher: CRC Press
Release Date : 2024-06-13
Analysis And Optimization Of Sheet Metal Forming Processes written by Amrut Mulay and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-06-13 with Technology & Engineering categories.
Analysis and Optimization of Sheet Metal Forming Processes comprehensively covers sheet metal forming, from choosing materials, tools and the forming method to optimising the entire process through finite element analysis and computer-aided engineering. Beginning with an introduction to sheet metal forming, the book provides a guide to the various techniques used within the industry. It provides a discussion of sheet metal properties relevant to forming processes, such as ductility, formability, and strength, and analyses how materials should be selected with factors including material properties, cost, and availability. Forming processes including shearing, bending, deep drawing, and stamping are also discussed, along with tools such as dies, punches, and moulds. Simulation and modelling are key to optimising the sheet metal forming process, including finite element analysis and computer-aided engineering. Other topics included are quality control, design, industry applications, and future trends. The book will be of interest to students and professionals working in the field of sheet metal and metal forming, materials science, mechanical engineering, and metallurgy.
Materials Design And Applications Ii
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Author : Lucas F. M. da Silva
language : en
Publisher: Springer
Release Date : 2018-12-31
Materials Design And Applications Ii written by Lucas F. M. da Silva and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-31 with Technology & Engineering categories.
This book highlights fundamental research on the design and application of engineering materials, and predominantly mechanical engineering applications. This area includes a wide range of technologies and materials, including metals, polymers, composites, and ceramics. Advanced applications include manufacturing cutting-edge materials, testing methods, and multi-scale experimental and computational aspects. The book introduces readers to a wealth of engineering applications in transport, civil, packaging and power generation.