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Author : N. Blanco
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (961 download)
Download or read book Mixed-Mode Delamination in a Carbon-Fibre Composite Laminate Under Cyclic Loading written by N. Blanco and published by . This book was released on 2000 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kevin T. O'Brien
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.F/5 ( download)
Download or read book Mixed-mode Strain-energy-release Rate Effects on Edge Delamination of Composites written by Kevin T. O'Brien and published by . This book was released on 1983 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ronald Krueger
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (317 download)
Download or read book The Virtual Crack Closure Technique: History, Approach and Applications written by Ronald Krueger and published by . This book was released on 2002 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Srinivasan Sridharan
Publisher : Elsevier
ISBN 13 : 1845694821
Total Pages : 787 pages
Book Rating : 4.8/5 (456 download)
Download or read book Delamination Behaviour of Composites written by Srinivasan Sridharan and published by Elsevier. This book was released on 2008-10-21 with total page 787 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Author :
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (317 download)
Download or read book Mixed-mode Strain-energy-release Rate Effects on Edge Delamination of Composites written by and published by . This book was released on 1983 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chun Hui Wang
Publisher : Academic Press
ISBN 13 : 0124171729
Total Pages : 307 pages
Book Rating : 4.1/5 (241 download)
Download or read book Bonded Joints and Repairs to Composite Airframe Structures written by Chun Hui Wang and published by Academic Press. This book was released on 2015-10-10 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bonded Joints and Repairs to Composite Airframe Structures is a single-source reference on the state-of-the-art in this rapidly growing area. It provides a thorough analysis of both internal and external joints and repairs, as well as discussions on damage tolerance, non-destructive inspection, self-healing repairs, and other essential information not only on the joints and repairs themselves, but critically, on how they differ from bonds and repairs to metallic aircraft. Authors Wang and Duong bring a valuable combination of academic research and industry expertise to the book, drawing on their cutting-edge composite technology experience, including analytic and computational leadership of damage and repair planning for the Boeing 787. Intended for graduate students, engineers, and scientists working on the subject in aerospace industry, government agencies, research labs, and academia, the book is an important addition to the limited literature in the field. Offers rare coverage of composite joints and repairs to composite structures, focusing on the state of the art in analysis Combines the academic, government, and industry expertise of the authors, providing research findings in the context of current and future applications Covers internal and external joints and repairs, as well as damage tolerance, non-destructive inspection, and self-healing repairs Ideal for graduate students, engineers, and scientists working in the aerospace industry, government agencies, research labs, and academia
Author : Rikard Benton Heslehurst
Publisher : CRC Press
ISBN 13 : 146658047X
Total Pages : 216 pages
Book Rating : 4.4/5 (665 download)
Download or read book Defects and Damage in Composite Materials and Structures written by Rikard Benton Heslehurst and published by CRC Press. This book was released on 2014-04-21 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 structure or result in unfavorable load paths. Emphasizing defect identification and restitution, Defects and Damage in Composite Materials and Structures explains how defects and damage in composite materials and structures impact composite component performance. Providing ready access to an extensive, descriptive list of defects and damage types, this must-have reference: Examines defect criticality in composite structures Recommends repair actions to restore structural integrity Discusses failure modes and mechanisms of composites due to defects Reviews NDI processes for finding and identifying defects in composite materials Relating defect detection methods to defect type, the author merges his experience in the field of in-service activities for composite airframe maintenance and repair with indispensable reports and articles on defects and damage in advanced composite materials from the last 50 years.
Author : K. Kussmaul
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (125 download)
Download or read book Delamination of Carbon/Epoxy Laminates Under Cyclic Mode II Loading written by K. Kussmaul and published by . This book was released on 1995 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The influence of fiber orientation and the location of a delamination within the laminate on the delamination behavior under fatigue loading has not yet been considered sufficiently. In this study, the growth of delaminations between plies of different fiber orientation and on different locations over the thickness of the laminate under cyclic Mode II loading was characterized using the end-notched flexure (ENF) test. Laminates made of HTA/6376, a toughened carbon/epoxy, with unidirectional and quasi-isotropic layups were tested. Experiments were performed in stroke control at a frequency of 5 Hz and a displacement ratio of 0.1. Delamination growth per fatigue loading cycle, da/dN, was related to the strain energy release rate (SERR) GII associated with the Mode II (forward shear) loading. G was determined by an experimental compliance calibration procedure, correlating observed crack length with measured specimen compliance. A complete characterization of the delamination growth from the threshold of detectability to unstable delamination growth is given. A Paris law was fitted to the data which describes the experimental results rather well. It was observed that delamination growth always occurred along plies of 0° orientation. Depending on the specimens' lay up and the location of the crack initiation insert, intralaminar crack growth occurred until the crack reached the next 0° ply. Delaminations then propagated from this point. Due to the coupling of deformation modes and the rather complex damage pattern, a mixed mode loading may occur. The resulting delamination growth curves were found to lie within or to the right (i.e., delamination growth is slower for a given SERR) of the scatter band found for the specimens with midplane delamination and 0° bounding plies, with only few exceptions. Specimens with delaminations close to the laminate's surface did not fail by delamination from the insert but due to bending or interlaminar shear close to the laminate midplane. An analytical expression for the distribution of the strain energy release rate, II, over the thickness of the specimen is derived which, within the rather large scatter that was observed, characterizes the SERR determined experimentally fairly well. The experimental results suggest that it may be sufficient to characterize delamination propagation behavior under cyclic Mode II loading in carbon/epoxy utilizing specimens with unidirectional layup and midplane delaminations. However, further investigations are needed to confirm this conclusion.
Author : P. E. Irving
Publisher : Woodhead Publishing
ISBN 13 : 0081027346
Total Pages : 688 pages
Book Rating : 4.0/5 (81 download)
Download or read book Polymer Composites in the Aerospace Industry written by P. E. Irving and published by Woodhead Publishing. This book was released on 2019-11-26 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer Composites in the Aerospace Industry, Second Edition, summarizes the latest research and developments on the design, manufacture and performance of composite components for aerospace structures. Sections cover the modeling, structure and behavior of 2D and 3D woven composites, the manufacture processes used for composite materials and components, buckling and compressive strength of laminates and manufacturing defects in composite materials, aspects of composite performance in aerospace structural design, including chapters on modeling stiffness and strength of structural elements, fatigue under uniaxial and multiaxial loads, fracture mechanics, impact strength and fatigue, crashworthiness, design and failure analysis of bolted joints, and much more. This updated edition is an essential reference resource for engineers, scientists and designers working in the development of composite materials in aerospace applications. Presents detailed discussions on the design, modeling and analysis of conventional and advanced polymer composites used in aerospace applications Provides an in-depth understanding of the performance parameters of aerospace composites, such as strength, stiffness and fatigue, impact and blast resistance Includes significant developments that have occurred since 2015 (in production and manufacturing, fatigue modeling, test standards, adhesive bonding and repair and service techniques) Features a brand new section on design applications, including helicopter components, fixed wing landing gear, aircraft wings and fuselage
Author : SS. Wang
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (125 download)
Download or read book Delamination Crack Growth in Unidirectional Fiber-Reinforced Composites Under Static and Cyclic Loading written by SS. Wang and published by . This book was released on 1979 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Delamination crack growth in a unidirectional composite laminate under static and fatigue loading conditions is investigated. An experimental program was performed to elucidate failure mechanisms and to characterize the growth rate of the delamination crack. Analytical modeling, based on microscopic observation, is conducted by using an advanced singular finite element method of the hybrid-stress model formulated through the minimum complementary energy principle. Solutions obtained from the analysis probe the fundamental nature of the problem. Implications of the results on the applicability of the classical laminate theory are discussed. Using a mixed-mode failure criterion, the delamination growth under a monotonically increasing load may be predicted satisfactorily. The rate of delamination crack propagation under fatigue loading is found to be related directly to the amplitudes of cyclic opening and shearing mode stress intensity factors by a power law relationship. The study elucidates many salient features of the problem, provides insight to the basic nature of the delamination failure behavior, and should be of practical importance in the design and testing of composite materials.
Author : Mohammad Jawaid
Publisher : Woodhead Publishing
ISBN 13 : 0081023014
Total Pages : 276 pages
Book Rating : 4.0/5 (81 download)
Download or read book Failure Analysis in Biocomposites, Fibre-Reinforced Composites and Hybrid Composites written by Mohammad Jawaid and published by Woodhead Publishing. This book was released on 2018-09-17 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Failure Analysis in Biocomposites, Fibre-Reinforced Composites and Hybrid Composites covers key aspects of fracture and failure in natural/synthetic fiber reinforced polymer based composite materials, ranging from crack propagation, to crack growth, and from notch-size effect, to damage-tolerant design. The book describes a broad range of techniques and strategies for the compositional and failure analysis of polymeric materials and products. It also illustrates the application of analytical methods for solving commonly encountered problems. Topics of interest include failure analysis, mechanical and physical properties, structural health monitoring, durability and life prediction, modelling of damage processes of natural fiber, synthetic fibers, and more. Written by leading experts in the field, and covering composite materials developed from different natural fibers and their hybridization with synthetic fibers, the book's chapters provide cutting-edge, up-to-date research on the characterization, analysis and modelling of composite materials. Contains contributions from leading experts in the field Discusses recent progress on failure analysis, SHM, durability, life prediction and the modelling of damage in natural fiber-based composite materials Covers experimental, analytical and numerical analysis Provides detailed and comprehensive information on mechanical properties, testing methods and modelling techniques
Author : Society of Manufacturing Engineers
Publisher :
ISBN 13 :
Total Pages : 736 pages
Book Rating : 4.3/5 (91 download)
Download or read book SME Technical Paper written by Society of Manufacturing Engineers and published by . This book was released on 2003 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sohel Rana
Publisher : Woodhead Publishing
ISBN 13 : 0081000545
Total Pages : 498 pages
Book Rating : 4.0/5 (81 download)
Download or read book Advanced Composite Materials for Aerospace Engineering written by Sohel Rana and published by Woodhead Publishing. This book was released on 2016-04-26 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Composite Materials for Aerospace Engineering: Processing, Properties and Applications predominately focuses on the use of advanced composite materials in aerospace engineering. It discusses both the basic and advanced requirements of these materials for various applications in the aerospace sector, and includes discussions on all the main types of commercial composites that are reviewed and compared to those of metals. Various aspects, including the type of fibre, matrix, structure, properties, modeling, and testing are considered, as well as mechanical and structural behavior, along with recent developments. There are several new types of composite materials that have huge potential for various applications in the aerospace sector, including nanocomposites, multiscale and auxetic composites, and self-sensing and self-healing composites, each of which is discussed in detail. The book’s main strength is its coverage of all aspects of the topics, including materials, design, processing, properties, modeling and applications for both existing commercial composites and those currently under research or development. Valuable case studies provide relevant examples of various product designs to enhance learning. Contains contributions from leading experts in the field Provides a comprehensive resource on the use of advanced composite materials in the aerospace industry Discusses both existing commercial composite materials and those currently under research or development
Author : Yao Weixing
Publisher : DEStech Publications, Inc
ISBN 13 : 1605950912
Total Pages : 298 pages
Book Rating : 4.6/5 (59 download)
Download or read book Fatigue Behaviour of Fiber Reinforced Polymers written by Yao Weixing and published by DEStech Publications, Inc. This book was released on 2012 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Book is organized around new experiments in and modeling of fatigue and its effects over a range of composite materials subjected to multiple mechanical and thermal stresses. An objective of the investigations discussed is to explain failure mechanisms and improve long-term loading prediction and performance.
Author : Erian A. Armanios
Publisher : ASTM International
ISBN 13 : 0803124112
Total Pages : 570 pages
Book Rating : 4.8/5 (31 download)
Download or read book Composite Materials written by Erian A. Armanios and published by ASTM International. This book was released on 1997 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ad Vlot
Publisher : Springer Science & Business Media
ISBN 13 : 9781402000386
Total Pages : 556 pages
Book Rating : 4.0/5 (3 download)
Download or read book Fibre Metal Laminates written by Ad Vlot and published by Springer Science & Business Media. This book was released on 2001-09-30 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Like New, No Highlights,No Markup,all pages are intact.
Author : Norbert Blanco
Publisher : VDM Publishing
ISBN 13 : 9783836490436
Total Pages : 304 pages
Book Rating : 4.4/5 (94 download)
Download or read book Variable Mixed-mode Fatigue Delamination in Composite Laminates written by Norbert Blanco and published by VDM Publishing. This book was released on 2008 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue is a key factor for durable designs of composite structures. Delamination is the most important damage mechanisms for these materials. In many composite components delaminations grow under a varying mode mix that depends on the crack length. It is important to develop methods that can characterise subcritical, mixed-mode growth in fatigue delamination. The objective of this investigation is the characterisation of variable mixed-mode fatigue delamination in composite laminates. A mixed-mode fatigue delamination model is proposed. Opposite to literature mixed-mode fatigue delamination models, the proposed model assumes a non-monotonic variation of the propagation parameters with the mode mix. The mixed-mode end load split (MMELS) test, in which the propagation mode varies with the crack extent, is analysed. Two theoretical approaches present in the literature are considered. However, the resulting expressions are not equivalent and a more accurate alternative analysis is carried out based on the virtual crack closure technique. Significant findings are found for materials characterisation.
