Interface Fracture And Delaminations In Composite Materials
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Interface Fracture And Delaminations In Composite Materials
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Author : Leslie Banks-Sills
language : en
Publisher: Springer
Release Date : 2017-07-05
Interface Fracture And Delaminations In Composite Materials written by Leslie Banks-Sills and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-07-05 with Science categories.
Part I of this SpringerBrief presents the problem of a crack between two dissimilar isotropic materials and describes the mathematical background. A fracture criterion is discussed and Methods for calculating fracture parameters such as stress intensity factors using the finite element method and three post-processors are considered. Actual test data and both deterministic and statistical failure curves are presented.In Part II of the book, similar descriptions are given for delaminations in composite laminates. The mathematical treatment of this type of damage including the first term of the asymptotic expansion of the stress and displacement fields is considered. Numerical post-processors for determining stress intensity factors for these cases are reviewed. Two examples of specific laminates are presented: one with a failure curve and the other with a failure surface. Finally, beam specimens used for testing such failures are discussed.
Delamination Behaviour Of Composites
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Author : Srinivasan Sridharan
language : en
Publisher: Elsevier
Release Date : 2008-10-21
Delamination Behaviour Of Composites written by Srinivasan Sridharan and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-10-21 with Technology & Engineering categories.
Given such advantages as low weight compared to strength and toughness, laminated composites are now used in a wide range of applications. Their increasing use has underlined the need to understand their principal mode of failure, delamination. This important book reviews key research in understanding and preventing delamination.The first part of the book reviews general issues such as the role of fracture mechanics in understanding delamination, design issues and ways of testing delamination resistance. Part two describes techniques for detecting and characterising delamination such as piezoelectric sensors, the use of lamb waves and acoustic emission techniques. The next two sections of the book discuss ways of studying and modelling delamination behaviour. The final part of the book reviews research on delamination behaviour in particular conditions such as shell and sandwich structures, z-pin bridging and resin bonding.With its distinguished editor and international team of contributors, Delamination behaviour of composites is a standard reference for all those researching laminated composites and using them in such diverse applications as microelectronics, aerospace, marine, automotive and civil engineering. - Reviews the role of fracture mechanics in understanding delamination, design issues and ways of testing delamination resistance - Discuss ways of studying and modelling delamination behaviour - A standard reference for all those researching laminated composites
Engineered Interfaces In Fiber Reinforced Composites
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Author : Jang-Kyo Kim
language : en
Publisher: Elsevier
Release Date : 1998-10-21
Engineered Interfaces In Fiber Reinforced Composites written by Jang-Kyo Kim and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-10-21 with Technology & Engineering categories.
The study and application of composite materials are a truly interdisciplinary endeavour that has been enriched by contributions from chemistry, physics, materials science, mechanics and manufacturing engineering. The understanding of the interface (or interphase) in composites is the central point of this interdisciplinary effort. From the early development of composite materials of various nature, the optimization of the interface has been of major importance. While there are many reference books available on composite materials, few of them deal specifically with the science and mechanics of the interface of fiber reinforced composites. Further, many recent advances devoted solely to research in composite interfaces have been scattered in a variety of published literature and have yet to be assembled in a readily accessible form. To this end this book is an attempt to bring together recent developments in the field, both from the materials science and mechanics perspective, in a single convenient volume.The central theme of the book is tailoring the interface properties to optimise the mechanical peformance and structural integrity of composites with enhanced strength/stiffness and fracture toughness (or specific fracture resistance). It deals mainly with interfaces in advanced composites made from high performance fibers, such as glass, carbon, aramid, ultra high modulus polyethylene and some inorganic (e.g. B/W, A12O3, SiC) fibers, and matrix materials encompassing polymers, metals/alloys and ceramics. The book is intended to provide a comprehensive treatment of composite interfaces in such a way that it should be of interest to materials scientists, technologists and practising engineers, as well as graduate students and their supervisors in advanced composites. We hope that this book will also serve as a valuable source of reference to all those involved in the design and research of composite interfaces.The book contains eight chapters of discussions on microstructure-property relationships with underlying fundamental mechanics principles. In Chapter 1, an introduction is given to the nature and definition of interfaces in fiber reinforced composites. Chapter 2 is devoted to the mechanisms of adhesion which are specific to each fiber-matrix system, and the physio-chemical characterization of the interface with regard to the origin of adhesion. The experimental techniques that have been developed to assess the fiber-matrix interface bond quality on a microscopic scale are presented in Chapter 3, along with the techniques of measuring interlaminar/intralaminar strengths and fracture toughness using bulk composite laminates. The applicability and limitations associated with loading geometry and interpretation of test data are compared. Chapter 4 presents comprehensive theoretical analyses based on shear-lag models of the single fiber composite tests, with particular interest being placed on the interface debond process and the nature of the fiber-matrix interfacial bonding. Chapter 5 is devoted to reviewing current techniques of fiber surface treatments which have been devised to improve the bond strength and the fiber-matrix compatibility/stability during the manufacturing processes of composites. The micro-failure mechanisms and their associated theories of fracture toughness of composites are discussed in Chapter 6. The roles of the interface and its effects on the mechanical performance of fiber composites are addressed from several viewpoints. Recent research efforts to augment the transverse and interlaminar fracture toughness by means of controlled interfaces are presented in Chapters 7 and 8.
Numerical Simulation Of Delamination Growth In Composite Materials
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Author : P. P. Camanho
language : en
Publisher:
Release Date : 2001
Numerical Simulation Of Delamination Growth In Composite Materials written by P. P. Camanho and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Composite materials categories.
The use of decohesion elements for the simulation of delamination in composite materials is reviewed. The test methods available to measure the interfacial fracture toughness used in the formulation of decohesion elements are described initially. After a brief presentation of the virtual crack technique most widely used to simulate delamination growth, the formulation of interfacial decohesion elements is described. Problems related with decohesion element constitutive equations, mixed-mode crack growth, element numerical integration and solution procedures are discussed. Based on these investigations, it is concluded that the use of interfacial decohesion elements is a promising technique that avoids the need for a pre-existing crack and pre-interfacial decohesion elements is a promising technique that avoids the need for a pre-existing crack and predefined crack paths, and that these elements can be used to simulate both delamination onset and growth.
Dynamic Deformation Damage And Fracture In Composite Materials And Structures
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Author : Vadim Silberschmidt
language : en
Publisher: Elsevier
Release Date : 2022-09-15
Dynamic Deformation Damage And Fracture In Composite Materials And Structures written by Vadim Silberschmidt and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-09-15 with Technology & Engineering categories.
Dynamic Deformation, Damage and Fracture in Composite Materials and Structures, Second Edition reviews various aspects of dynamic deformation, damage and fracture, mostly in composite laminates and sandwich structures, and in a broad range of application areas including aerospace, automotive, defense and sports engineering. This book examines low- and high-velocity loading and assesses shock, blast and penetrative events, and has been updated to cover important new developments such as the use of additive manufacturing to produce composites, including fiber-reinforced ones. New microstructural, experimental, theoretical, and numerical studies with advanced tools are included as well. The book also features four new chapters covering topics such as dynamic delamination, dynamic deformation and fracture in 3D-printed composites, ballistic impacts with fragmenting projectiles, and the effect of multiple impacting. - Examines dynamic deformation and fracture of composite materials, covering experimental, analytical and numerical aspects - Features four new chapters covering topics such as dynamic interfacial fracture, fracture in 3D-printed composites, ballistic impacts with fragmenting projectiles, and the effect of multiple impacting - Addresses important application areas such as aerospace, automotive, wind energy, defense and sports
Interface Fracture In Layered Materials And Blister Mechanics Of Thin Films
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Author : Simon S. Wang
language : en
Publisher: Cambridge Scholars Publishing
Release Date : 2024-02-06
Interface Fracture In Layered Materials And Blister Mechanics Of Thin Films written by Simon S. Wang and has been published by Cambridge Scholars Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-02-06 with Technology & Engineering categories.
Layered materials and thin film coatings are ubiquitous in today’s science, engineering, and technology sectors. To name just a few examples: fibre-reinforced composite laminates in aircraft structures, thermal barrier coatings in aero-engines and power turbines, multilayer Mo/Si mirrors of nanometre thickness in synchrotrons, telescope optics, extreme ultraviolet optical systems, etc. The inherent weak interfaces in these materials are extremely vulnerable to fracture which often causes thin film blisters of various morphologies. The authors of the present work have made some significant research progress on this topic; the book gathers these advancements to provide researchers and engineers with more theoretical tools to study and design such material systems. Furthermore, this book can be used as a textbook in advanced courses for postgraduate students. To suit these purposes, each chapter focuses on a relatively independent topic and consists of both theoretical development and experimental applications. Many figures and numerical tables are used to help readers with mechanical understanding and self-practice.
Local Mechanics Concepts For Composite Material Systems
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Author : J.N. Reddy
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-08
Local Mechanics Concepts For Composite Material Systems written by J.N. Reddy and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-08 with Technology & Engineering categories.
The application of composite materials to engineering components has spurred a ma jor effort to analyze such materials and the structures made from them. Most researchers workin~ in mechanics of composite structures understand that composite materials pro vide umque advantages but also present complex and challenging problems to researchers. The complex inelastic behavior and variety of failure modes of composite structures are a result of the strength and stiffness properties of constituents and their complex interac tions. Macromechanical constitutive models based on gross composite properties cannot realistically represent local interactions, and thus have serious limitations. The composite materials that are of most interest to engineering applications are often "brittle" in their behavior, in the sense that the strength and life of the material systems is controlled or greatly influenced by events or processes which involve volumes of material whose dimen sions are small compared to the global dimensions of the element. This is also true in ductile systems where local nonlinearity may contribute to local behavior which controls global response.
Delamination And Debonding Of Materials
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Author : W. Steven Johnson
language : en
Publisher: ASTM International
Release Date : 1985
Delamination And Debonding Of Materials written by W. Steven Johnson and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Technology & Engineering categories.
The Virtual Crack Closure Technique History Approach And Applications
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Author : Ronald Krueger
language : en
Publisher:
Release Date : 2002
The Virtual Crack Closure Technique History Approach And Applications written by Ronald Krueger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
An overview of the virtual crack closure technique is presented. The approach used is discussed, the history summarized, and insight into its applications provided. Equations for two-dimensional quadrilateral elements with linear and quadratic shape functions are given. Formula for applying the technique in conjuction with three-dimensional solid elements as well as plate/shell elements are also provided. Necessary modifications for the use of the method with geometrically nonlinear finite element analysis and corrections required for elements at the crack tip with different lengths and widths are discussed. The problems associated with cracks or delaminations propagating between different materials are mentioned briefly, as well as a strategy to minimize these problems. Due to an increased interest in using a fracture mechanics based approach to assess the damage tolerance of composite structures in the design phase and during certification, the engineering problems selected as examples and given as references focus on the application of the technique to components made of composite materials.
Proceedings Of The American Society For Composites Seventeenth Technical Conference
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Author : C. T. Sun
language : en
Publisher: CRC Press
Release Date : 2002-10-24
Proceedings Of The American Society For Composites Seventeenth Technical Conference written by C. T. Sun and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-10-24 with Technology & Engineering categories.