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ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (317 download)
Download or read book Delamination Onset in Polymeric Composite Laminates Under Thermal and Mechanical Loads written by and published by . This book was released on 1991 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : RH. Martin
Publisher :
ISBN 13 :
Total Pages : 27 pages
Book Rating : 4.:/5 (125 download)
Download or read book Delamination Onset in Polymeric Composite Laminates Under Thermal and Mechanical Loads written by RH. Martin and published by . This book was released on 1993 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes a fracture mechanics damage methodology to predict edge delamination. The methodology accounts for residual thermal stresses, cyclic thermal stresses, and cyclic mechanical stresses. The modeling is based on the classical lamination theory and a sublaminate theory. The prediction methodology determines the strain energy release rate, G, at the edge of a laminate and compares it with the mode I fatigue and fracture toughness of the composite. To verify the methodology, isothermal static tests at 23°C, 125°C, and 175°C and tension-tension fatigue tests at 23°C and 175°C were conducted on laminates. The material system used was a carbon/bismaleimide, IM7/5260. Two quasi-isotropic lay-ups were used, [45/-45/0/90]s and [-45/45/90/0]s. Also, 24-ply unidirectional double cantilever beam specimens were tested to determine the fatigue and fracture toughness of the composite at different temperatures. Raising the temperature had the effect of decreasing the value of G at the edge for these lay-ups and also to lower the fatigue and fracture toughness of the composite. Experimentally, the static stress to edge delamination was not affected by temperature but the number of cycles to edge delamination decreased as temperature increased. The ply interface for delamination was well predicted. The predicted static stress and the number of cycles to edge delamination was generally conservative for the room temperature tests because of the large mode II G component present. For the elevated temperature tests the mode II component is smaller and the static stress and number of cycles to the onset to delamination was generally well predicted.
Author : Charles E. Harris
Publisher : ASTM International
ISBN 13 : 0803114915
Total Pages : 223 pages
Book Rating : 4.8/5 (31 download)
Download or read book High Temperature and Environmental Effects on Polymeric Composites written by Charles E. Harris and published by ASTM International. This book was released on 1993 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerospace and naval applications of polymers in conditions once thought too harsh for them, take center stage in the survey of how polymer composites react to environmental conditions. A dozen papers from a symposium in San Diego, October 1991, describe damage mechanisms and failure, materials behavior under combined effects, and constitutive models, sometimes considering polymers as a whole, but more often specific groups or composites. No index. Annotation copyright by Book News, Inc., Portland, OR.
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ISBN 13 :
Total Pages : 304 pages
Book Rating : 4.:/5 (3 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 54 pages
Book Rating : 4.:/5 (317 download)
Download or read book Residual Thermal and Moisture Influences on the Strain Energy Release Rate Analysis of Edge Delamination written by and published by . This book was released on 1985 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Barry D. Davidson
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.:/5 (1 download)
Download or read book A Predictive Methodology for Delamination Growth in Laminated Composites written by Barry D. Davidson and published by . This book was released on 1998 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 752 pages
Book Rating : 4.:/5 (31 download)
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1994 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (317 download)
Download or read book Hygrothermal Influence on Delamination Behavior of Graphite/epoxy Laminates written by and published by . This book was released on 1984 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bryan Harris
Publisher : Elsevier
ISBN 13 : 1855738570
Total Pages : 765 pages
Book Rating : 4.8/5 (557 download)
Download or read book Fatigue in Composites written by Bryan Harris and published by Elsevier. This book was released on 2003-10-31 with total page 765 pages. Available in PDF, EPUB and Kindle. Book excerpt: This major handbook is the first authoritative survey of current knowledge of fatigue behaviour of composites. It deals in detail with a wide range of problems met by designers in the automotive, marine and structural engineering industries. Compiled from the contributions of some of the best-known researchers in the field, it provides an invaluable, practical and encyclopaedic handbook covering recent developments. Comprehensively discusses the problems of fatigue in composites met by designers in the aerospace, marine and structural engineering industries Provides a general introduction on fatigue in composites before reviewing current research on micromechanical aspects Analyses various types of composites with respect to fatigue behaviour and testing and provides in-depth coverage of life-prediction models for constant variable stresses
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 : Eugene T. Camponeschi
Publisher : ASTM International
ISBN 13 : 0803118791
Total Pages : 360 pages
Book Rating : 4.8/5 (31 download)
Download or read book Composite Materials written by Eugene T. Camponeschi and published by ASTM International. This book was released on 1993 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (317 download)
Download or read book Fatigue Delamination Onset Prediction in Tapered Composite Laminates written by and published by . This book was released on 1989 with total page 66 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 : Linqi Zhuang
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (865 download)
Download or read book Effects of Voids on Delamination Growth in Composite Laminates Under Compression written by Linqi Zhuang and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer matrix composites are widely used as structural components in the aerospace industry and wind turbine industry etc. to take advantage of their unique mechanical properties and weight saving ability. Although there have been considerable developments in analyzing delamination growth and effects of voids on certain mechanical properties of composites, none of the present literatures investigates the effects of voids on delamination growth under compression. In this research, a parametric study is performed to investigate the effects of voids on delamination growth in composite laminates under compression. In composite structures, delamination would be created by eccentricities in structural load path, structural discontinuities, and during manufacturing and maintenance processes. Also, the service damage such as the impact of foreign objects may also result in delamination. In the Finite Element model developed, a through-width surface delamination is assumed, and void is placed in critical locations ahead of crack tip. Strain Energy Release Rate (SERR) is calculated by the Virtual Crack Closure Technique (VCCT) in order to study the delamination growth. It is found that the delamination front experiences a mixed-mode delamination behavior when local out-of-plane buckling occurs. During the loading, Mode II SERR increases monotonically while Mode I SERR increases first and then decreases as the delamination front starts to close. Meanwhile, Mode II SERR is found to be much larger than the Mode I component. The presence of void does not significantly alter the transverse displacement of the delaminated part. However, the presence of void increases the Mode II SERR, as well as the total SERR, and this increase depends on the size and location of void. For Mode I SERR, the effect of void is not that prominent. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/148385
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ISBN 13 :
Total Pages : 640 pages
Book Rating : 4.:/5 (318 download)
Download or read book 35th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference written by and published by . This book was released on 1994 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 1052 pages
Book Rating : 4.:/5 (31 download)
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1985 with total page 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt:
