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Effects Of Fiber Length On Elastic Moduli Of Randomly Oriented Chopped Fiber Composites
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Book Synopsis Effects of Fiber Length on Elastic Moduli of Randomly-Oriented Chopped-Fiber Composites by : CT. Sun
Download or read book Effects of Fiber Length on Elastic Moduli of Randomly-Oriented Chopped-Fiber Composites written by CT. Sun and published by . This book was released on 1979 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a composite-cylinder model with a short cylindrical fiber embedded in the center of a cylindrical matrix, the longitudinal Young's modulus and major Poisson's ratio of a unidirectional, short-fiber composite are found in terms of the fiber volume fraction and the tip-to-tip spacing of the fibers. The expressions obtained are then modified to account for the influence of volume fraction and aspect ratio of the fibers. These results, together with Christensen and Waals' normalized expressions, are used to calculate the Young's modulus and Poisson's ratio of a randomly-oriented chopped-fiber composite in terms of the fiber volume fraction and its aspect ratio. The theory developed is then applied to examine numerically the effects of fiber length on the Young's modulus and Poisson's ratio of short glass-fiber/polyester-resin composites. The results show that the Young's modulus of both unidirectional and randomly-oriented fiber composites are strongly dependent on the fiber length; so is the Poisson's ratio, though to a lesser degree.
Download or read book Composite Materials written by S. W. Tsai and published by ASTM International. This book was released on 1979 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanical Properties of Fibrous Composites by : B. Walter Rosen
Download or read book Mechanical Properties of Fibrous Composites written by B. Walter Rosen and published by . This book was released on 1964 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Principles of Composite Material Mechanics, Third Edition by : Ronald F. Gibson
Download or read book Principles of Composite Material Mechanics, Third Edition written by Ronald F. Gibson and published by CRC Press. This book was released on 2011-09-21 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Composite Material Mechanics, Third Edition presents a unique blend of classical and contemporary mechanics of composites technologies. While continuing to cover classical methods, this edition also includes frequent references to current state-of-the-art composites technology and research findings. New to the Third Edition Many new worked-out example problems, homework problems, figures, and references An appendix on matrix concepts and operations Coverage of particle composites, nanocomposites, nanoenhancement of conventional fiber composites, and hybrid multiscale composites Expanded coverage of finite element modeling and test methods Easily accessible to students, this popular bestseller incorporates the most worked-out example problems and exercises of any available textbook on mechanics of composite materials. It offers a rich, comprehensive, and up-to-date foundation for students to begin their work in composite materials science and engineering. A solutions manual and PowerPoint presentations are available for qualifying instructors.
Book Synopsis Principles of Composite Material Mechanics by : Ronald F. Gibson
Download or read book Principles of Composite Material Mechanics written by Ronald F. Gibson and published by CRC Press. This book was released on 2016-02-10 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Composite Material Mechanics covers a unique blend of classical and contemporary mechanics of composites technologies. It presents analytical approaches ranging from the elementary mechanics of materials to more advanced elasticity and finite element numerical methods, discusses novel materials such as nanocomposites and hybrid multis
Download or read book Energy Research Abstracts written by and published by . This book was released on 1982 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Castable Polyurethane Elastomers by : I.R. Clemitson
Download or read book Castable Polyurethane Elastomers written by I.R. Clemitson and published by CRC Press. This book was released on 2015-05-13 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition of a bestseller is a practical guide to the production of castable polyurethane articles. The book shows the progression from raw materials to prepolymer production, including the chemistry and functionality of the processes. It provides a comprehensive look at various problem-solving and processing techniques, examining the selection of different systems on both the micro and macro levels. Reorganized for better flow, this edition describes new processing methods, expands coverage of health and safety aspects, and brings all standards up to date.
Download or read book The Shock and Vibration Digest written by and published by . This book was released on 1983 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Principles of Composite Material Mechanics, Second Edition by : Ronald F. Gibson
Download or read book Principles of Composite Material Mechanics, Second Edition written by Ronald F. Gibson and published by CRC Press. This book was released on 2007-05-30 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensively updated and maintaining the high standard of the popular original, Principles of Composite Material Mechanics, Second Edition reflects many of the recent developments in the mechanics of composite materials. It draws on the decades of teaching and research experience of the author and the course material of the senior undergraduate and graduate level classes he has taught. New and up-to-date information throughout the text brings modern engineering students everything they need to advance their knowledge of the evermore common composite materials. The introduction strengthens the book’s emphasis on basic principles of mechanics by adding a review of the basic mechanics of materials equations. New appendices cover the derivations of stress equilibrium equations and the strain–displacement relations from elasticity theory. Additional sections address recent applications of composite mechanics to nanocomposites, composite grid structures, and composite sandwich structures. More detailed discussion of elasticity and finite element models have been included along with results from the recent World Wide Failure Exercise. The author takes a phenomenological approach to illustrate linear viscoelastic behavior of composites. Updated information on the nature of fracture and composite testing includes coverage of the finite element implementation of the Virtual Crack Closure technique and new and revised ASTM standard test methods. The author includes updated and expanded material property tables, many more example problems and homework exercises, as well as new reference citings throughout the text. Requiring a solid foundation in materials mechanics, engineering, linear algebra, and differential equations, Principles of Composite Materials Mechanics, Second Edition provides the advanced knowledge in composite materials needed by today’s materials scientists and engineers.
Book Synopsis Composite Materials Testing and Design by :
Download or read book Composite Materials Testing and Design written by and published by . This book was released on 1979 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1982 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Composite Materials, Testing and Design (fifth Conference) by :
Download or read book Composite Materials, Testing and Design (fifth Conference) written by and published by . This book was released on 1979 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Creep written by Tomasz Tański and published by BoD – Books on Demand. This book was released on 2018-01-10 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains 12 chapters with original and innovative research studies in the issues related to the broadly defined creep effect, which concerns not only the area of construction materials but also natural phenomena. The emphasis on the discussion of a new trend of experimental creep testing, which binds the classic creep methods to seek the correlation of parameters obtained in tests, deserves particular attention. This book aims to provide the readers, including, but not limited to, students and doctoral students and also the research personnel and engineers involved in the operation of equipment and structural components as well as specialists in high-temperature creep-resisting materials, with a comprehensive review of new trends in the field of creep-exposed materials and their research methodology. The chapters of this book were developed by respected and well-known researchers from different countries.
Book Synopsis American Society of Composites, Tenth Technology Proceedings by : Amer Society Composi
Download or read book American Society of Composites, Tenth Technology Proceedings written by Amer Society Composi and published by CRC Press. This book was released on 1995-10-17 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conference proceedings from the American Society of Composites, Tenth Technology Proceedings: Composite Materials, Mechanics and Processing on October 18-20, 1995 at the Miramar Sheraton Hotel Santa Monica, California
Book Synopsis Analysis and Performance of Fiber Composites by : Bhagwan D. Agarwal
Download or read book Analysis and Performance of Fiber Composites written by Bhagwan D. Agarwal and published by Wiley-Interscience. This book was released on 1990-10-08 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Having fully established themselves as workable engineering materials, composite materials are now increasingly commonplace around the world. Serves as both a text and reference guide to the behavior of composite materials in different engineering applications. Revised for this Second Edition, the text includes a general discussion of composites as material, practical aspects of design and performance, and further analysis that will be helpful to those engaged in research on composites. Each chapter closes with references for further reading and a set of problems that will be useful in developing a better understanding of the subject.
Book Synopsis Understanding and Predicting the Stress Relaxation Behavior of Short-Fiber Composites by : Numaira Obaid
Download or read book Understanding and Predicting the Stress Relaxation Behavior of Short-Fiber Composites written by Numaira Obaid and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The viscoelastic properties of short-fiber composites are complex and not well-understood. Previous experimental work has shown that the viscoelastic properties of short-fiber composites are affected by both elastic fibers and the matrix, which is baffling since elastic fibers do not exhibit any time-dependence of their own. The goal of this study was to understand why and how elastic fibers can alter time-dependent behavior when contained in a composite. In this thesis, conventional shear-lag theory was adapted to include a time-dependent matrix and a novel analytical model was used to predict the tensile relaxation modulus of short-fiber composites. The model highlighted the importance of incorporating both the time-dependent tensile modulus of the matrix as well as its time-dependent shear modulus. Investigations using the model showed that since stress transfer in a short-fiber composite occurs through interfacial shearing, the time-dependent shear modulus of the matrix results in time-varying stress transfer the fiber. Since the stress in the fiber is time-dependent, it exhibits an apparent stress relaxation stemming from the relaxing shear modulus of the matrix. The model predictions were validated using finite-element simulations and experimental data. Comparison to real data confirmed the hypothesis that the time-dependency observed in elastic fibers stemmed from the indirect time-dependency imposed by the time-varying stress transfer from the matrix. The model was also used to determine the effect of various parameters including fiber aspect ratio and fiber volume fraction. For the first time, a critical aspect ratio for viscoelasticity was introduced. This was defined as the aspect ratio at which the contribution to composite stress relaxation by the fiber is maximized. The effect of fiber orientation was also examined, and an analytical model was developed to predict the stress relaxation of composites containing randomly-oriented fibers. It was found that random orientation in the plane would shrink the effect of fibers by one-third of what would be observed in oriented composites. In the last part of the thesis, we investigated the strain rate-dependence of short fiber-reinforced foams. The study highlighted a potential area where knowledge of the stress relaxation behavior of the short-fiber composites could prove useful.
Book Synopsis Determination of Elastic Moduli of Fiber-Resin Composites Using an Impulse Excitation Technique by :
Download or read book Determination of Elastic Moduli of Fiber-Resin Composites Using an Impulse Excitation Technique written by and published by . This book was released on 1996 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
