Towards A Damage Tolerance Philosophy For Composite Materials And Structures
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Towards A Damage Tolerance Philosophy For Composite Materials And Structures
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Author : National Aeronautics and Space Adm Nasa
language : en
Publisher: Independently Published
Release Date : 2018-11-06
Towards A Damage Tolerance Philosophy For Composite Materials And Structures written by National Aeronautics and Space Adm Nasa and has been published by Independently Published this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-06 with Science categories.
A damage-threshold/fail-safe approach is proposed to ensure that composite structures are both sufficiently durable for economy of operation, as well as adequately fail-safe or damage tolerant for flight safety. Matrix cracks are assumed to exist throughout the off-axis plies. Delamination onset is predicted using a strain energy release rate characterization. Delamination growth is accounted for in one of three ways: either analytically, using delamination growth laws in conjunction with strain energy release rate analyses incorporating delamination resistance curves; experimentally, using measured stiffness loss; or conservatively, assuming delamination onset corresponds to catastrophic delamination growth. Fail-safety is assessed by accounting for the accumulation of delaminations through the thickness. A tension fatigue life prediction for composite laminates is presented as a case study to illustrate how this approach may be implemented. Suggestions are made for applying the damage-threshold/fail-safe approach to compression fatigue, tension/compression fatigue, and compression strength following low velocity impact. Obrien, T. Kevin Langley Research Center...
Towards A Damage Tolerance Philosophy For Composite Materials And Structures
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Author :
language : en
Publisher:
Release Date : 1988
Towards A Damage Tolerance Philosophy For Composite Materials And Structures written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
Composite Materials
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Author : Samuel P. Garbo
language : en
Publisher: ASTM International
Release Date : 1990
Composite Materials written by Samuel P. Garbo and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Composite materials categories.
Annotation Papers from the symposium held April 1988 in Sparks, Nevada. The focus is on significant advances in the area of damage tolerance and durability of composite structures. Twenty-seven contributions address delamination initiation and growth analysis, damage mechanisms and test procedures, and other general interest design and analysis topics. Annotation copyrighted by Book News, Inc., Portland, OR.
Damage Tolerance And Durability Of Material Systems
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Author : Kenneth L. Reifsnider
language : en
Publisher: Wiley-Interscience
Release Date : 2002-04-24
Damage Tolerance And Durability Of Material Systems written by Kenneth L. Reifsnider and has been published by Wiley-Interscience this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-04-24 with Science categories.
A daring, original approach to understanding and predicting the mechanical behavior of materials "Damage is an abstraction . . . Strength is an observable, an independent variable that can be measured, with clear and familiar engineering definitions." -from the Preface to Damage Tolerance and Durability of Material Systems Long-term behavior is one of the most challenging and important aspects of material engineering. There is a great need for a useful conceptual or operational framework for measuring long-term behavior. As much a revolution in philosophy as an engineering text, Damage Tolerance and Durability of Material Systems postulates a new mechanistic philosophy and methodology for predicting the remaining strength and life of engineering material. This philosophy associates the local physical changes in material states and stress states caused by time-variable applied environments with global properties and performance. There are three fundamental issues associated with the mechanical behavior of engineering materials and structures: their stiffness, strength, and life. Treating these issues from the standpoint of technical difficulty, time, and cost for characterization, and relationship to safety, reliability, liability, and economy, the authors explore such topics as: * Damage tolerance and failure modes * Factors that determine composite strength * Micromechanical models of composite stiffness and strength * Stiffness evolution * Strength evolution during damage accumulation * Non-uniform stress states * Lifetime prediction With a robust selection of example applications and case studies, this book takes a step toward the fulfillment of a vision of a future in which the prediction of physical properties from first principles will make possible the creation and application of new materials and material systems at a remarkable cost savings.
Advanced Durability And Damage Tolerance Design And Analysis Methods For Composite Structures Lessons Learned From Nasa Technology Development Programs
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Author : Charles E. Harris
language : en
Publisher:
Release Date : 2003
Advanced Durability And Damage Tolerance Design And Analysis Methods For Composite Structures Lessons Learned From Nasa Technology Development Programs written by Charles E. Harris and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Airframes categories.
Special Issue On Durability And Damage Tolerance Of Composite Materials And Structures
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Author :
language : en
Publisher:
Release Date : 2000
Special Issue On Durability And Damage Tolerance Of Composite Materials And Structures written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Damage Tolerance In Advanced Composites
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Author : Robert L. Sierakowski
language : en
Publisher: Routledge
Release Date : 2018-12-13
Damage Tolerance In Advanced Composites written by Robert L. Sierakowski and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-13 with Technology & Engineering categories.
This recent book provides a detailed presentation of damage tolerance assessment and characterization methods for advanced composites, as well as an examination of the role of damage tolerance in the design of composites. Included are analytical models for different types of damage in different composite materials. Tables provide helpful reference
Special Issue On Durability And Damage Tolerance Of Composite Materials And Structure
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Author :
language : en
Publisher:
Release Date : 2000
Special Issue On Durability And Damage Tolerance Of Composite Materials And Structure written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Composite materials categories.
Damage In Composite Materials
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Author : K. L. Reifsnider
language : en
Publisher: ASTM International
Release Date :
Damage In Composite Materials written by K. L. Reifsnider and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on with Composite materials categories.
Defects And Damage In Composite Materials And Structures
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Author : Rikard Benton Heslehurst
language : en
Publisher: CRC Press
Release Date : 2014-04-21
Defects And Damage In Composite Materials And Structures written by Rikard Benton Heslehurst and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-04-21 with Technology & Engineering categories.
The advantages of composite materials include a high specific strength and stiffness, formability, and a comparative resistance to fatigue cracking and corrosion. However, not forsaking these advantages, composite materials are prone to a wide range of defects and damage that can significantly reduce the residual strength and stiffness of a structu