Theoretical And Experimental Analysis Of Residual Stress Formation After Implant Resistance Welding Of Polycarbonate
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Theoretical And Experimental Analysis Of Residual Stress Formation After Implant Resistance Welding Of Polycarbonate
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Author : Joon Boo Park
language : en
Publisher:
Release Date : 1992
Theoretical And Experimental Analysis Of Residual Stress Formation After Implant Resistance Welding Of Polycarbonate written by Joon Boo Park and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.
Abstract: Formation of residual stress during thermoplastic welding causes detrimental effects to the joint quality under both dynamic and static loading conditions. Residual stress can reduce the solvent resistance of polymers as well as the tensile strength and fatigue life of the joint. Therefore, it is vital to predict and measure the level of residual stresses. Here, the formation of thermal and residual stresses during implant resistance welding of polycarbonate was studied. Thermocouples and an infrared temperature sensor were used to measure the temperature history and temperature distribution in the parts during welding. Heat flow analysis during implant resistance welding was done using Finite Element Method (FEM) and Finite Difference Method (FDM) which are connected with FEM and a simplified modeling analysis so-called "multi-bar analogy" respectively for stress analysis. FEM and FDM predictions of heat flow analysis were in good agreement with experimental measurements. The formation of thermal and residual stress was predicted using 2-D finite element analysis and multi-bar analogy in conjunction with non-isothermal linear viscoelasticity for a thermorheologically simple material. The residual stresses in the parts were measured using both photoelasticity and moire interferometry. Sectioning method utilizing moire interferometry was used to measure residual stress. FEM prediction of residual stress was in good agreement with photoelasticity measurement and moire interferometry measurement. Residual stress formation in the weld was predicted by multi-bar analogy modeling analysis and multi-bar analogy prediction was in good agreement with FEM prediction. Heat treatment to reduce residual stress after welding was performed. Residual stress distribution after heat treatment was predicted using FEM. The FEM prediction was in good agreement with photoelasticity measurement and moire interferometry measurement. This methodology for prediction, measurement and reduction of residual stress can be incorporated into the design, analysis, and welding procedures for plastic and composite joints. This will result in stronger and more reliable welds.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1993
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Aeronautics categories.
Measurement Of Residual Stresses After Implant Resistance Welding Of Polycarbonate Part 1 Photoelastic Techniques
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Author : J. B. Park
language : en
Publisher:
Release Date : 1993
Measurement Of Residual Stresses After Implant Resistance Welding Of Polycarbonate Part 1 Photoelastic Techniques written by J. B. Park and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
Conference Proceedings
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Author : Society of Plastics Engineers. Technical Conference
language : en
Publisher:
Release Date : 2003
Conference Proceedings written by Society of Plastics Engineers. Technical Conference and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Plastics categories.
Dissertation Abstracts International
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Author :
language : en
Publisher:
Release Date : 1992-11
Dissertation Abstracts International written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-11 with Dissertations, Academic categories.
American Doctoral Dissertations
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Author :
language : en
Publisher:
Release Date : 1991
American Doctoral Dissertations written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Dissertation abstracts categories.
Search Of Excellence Antec 91
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Author : Society of Plastic Engineers
language : en
Publisher: CRC Press
Release Date : 1991-05-01
Search Of Excellence Antec 91 written by Society of Plastic Engineers and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991-05-01 with Technology & Engineering categories.
Manufacturing And Application Of Stainless Steels
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Author : Andrea Di Schino
language : en
Publisher: MDPI
Release Date : 2020-04-15
Manufacturing And Application Of Stainless Steels written by Andrea Di Schino and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-04-15 with Technology & Engineering categories.
Stainless steels represent a quite interesting material family, both from a scientific and commercial point of view, following to their excellent combination in terms of strength and ductility together with corrosion resistance. Thanks to such properties, stainless steels have been indispensable for the technological progress during the last century and their annual consumption increased faster than other materials. They find application in all these fields requiring good corrosion resistance together with ability to be worked into complex geometries. Despite to their diffusion as a consolidated materials, many research fields are active regarding the possibility to increase stainless steels mechanical properties and corrosion resistance by grain refinement or by alloying by interstitial elements. At the same time innovations are coming from the manufacturing process of such a family of materials, also including the possibility to manufacture them starting from metals powder for 3D printing. The Special Issue scope embraces interdisciplinary work covering physical metallurgy and processes, reporting about experimental and theoretical progress concerning microstructural evolution during processing, microstructure-properties relations, applications including automotive, energy and structural.
Engineered Materials Abstracts
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Author :
language : en
Publisher:
Release Date : 1992-07
Engineered Materials Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-07 with Ceramic materials categories.
Micromachining
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Author :
language : en
Publisher: BoD – Books on Demand
Release Date : 2024-05-29
Micromachining written by 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 2024-05-29 with Technology & Engineering categories.
In this volume, Micromachining - New Trends and Applications, researchers from distant parts of the world have combined efforts and contributed their ideas and research work on micromachining. Their chapters will give you the opportunity to learn about materials, techniques, applications, challenges, and recent advancements in micromachining technology as well as about the state of the current micromachining market. Chapters also discuss concepts of micro-scale electronic component manufacturing, advancements in micromachining techniques of micro-electromechanical system (MEMS) piezoresistive pressure sensors to minimize offset drift due to humidity and temperature, the principles and classifications of force measuring systems with zero-compliance suspension, and triangular microcavity fabrication using micro-electrical discharge machining.