Download or read book Damping in Fiber Reinforced Composite Materials written by Pramod Kumar and published by Woodhead Publishing. This book was released on 2023-01-13 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Damping in Fiber Reinforced Composite Materials starts with an introduction to the basic concepts of damping in composite materials. Methods of modeling damping are then covered, along with recent developments in measuring techniques, both local, like polar scanning and global techniques like the Resonalyser method (based on measuring modal damping ratios of composite material plates). The effect of other factors, such as stress, strain-level, stiffness and frequency that need to be considered when determining damping behavior in composite materials are also discussed in detail. Other chapters present a parametric study of a two-phase composite material using different micromechanical models such as Unified micromechanics, and Hashin and Eshelby's to predict elastic moduli and loss factors. A bridging model that incorporates the effect of fiber packaging factors is then compared to FEM results. Final sections cover the effect of the interphase on the mechanical properties of the composite, present a nonlinear model for the prediction of damping in viscoelastic materials, and provide practical examples of damping and principles of vibration control. - Introduces the basics of damping and dynamic analysis in composite materials - Explains damping mechanisms in fiber reinforced composites and modeling principles - Covers recent developments in measuring techniques for the identification of damping in composite materials - Explains the use of a dynamic mechanical analyzer for predicting damping in composite materials - Contains micromechanical studies, modeling of two and three-phase composites, and modeling of non-linear damping - Includes experimental results that validate micromechanical models
Download or read book Optimization of Internal Damping in Fiber Reinforced Composite Materials written by Stalin Atahualpa Suarez and published by . This book was released on 1984 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vibration and Damping Behavior of Biocomposites written by Senthil Muthu Kumar Thiagamani and published by CRC Press. This book was released on 2022-04-19 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fiber-reinforced polymer composites exhibit better damping characteristics than conventional metals due to the viscoelastic nature of the polymers. There has been a growing interest among research communities and industries in the use of natural fibers as reinforcements in structural and semi-structural applications, given their environmental advantages. Knowledge of the vibration and damping behavior of biocomposites is essential for engineers and scientists who work in the field of composite materials. Vibration and Damping Behavior of Biocomposites brings together the latest research developments in vibration and viscoelastic behavior of composites filled with different natural fibers. Features: Reviews the effect of various types of reinforcements on free vibration behavior Emphasizes aging effects, influence of compatibilizers, and hybrid fiber reinforcement Explores the influence of resin type on viscoelastic properties Covers the use of computational modeling to analyze dynamic behavior and viscoelastic properties Discusses viscoelastic damping characterization through dynamic mechanical analysis. This compilation will greatly benefit academics, researchers, advanced students, and practicing engineers in materials and mechanical engineering and related fields who work with biocomposites. Editors Dr. Senthil Muthu Kumar Thiagamani, Kalasalinagam Academy of Research and Education (KARE), India Dr. Md Enamul Hoque, Military Institute of Science and Technology (MIST), Bangladesh Dr. Senthilkumar Krishnasamy, King Mongkut’s University of Technology North Bangkok KMUTNB, Thailand Dr. Chandrasekar Muthukumar, Hindustan Institute of Technology & Science (HITS), India Dr. Suchart Siengchin, King Mongkut’s University of Technology North Bangkok KMUTNB, Thailand
Download or read book Improvement and Optimization of Internal Damping in Fiber Reinforced Composite Materials written by and published by . This book was released on 1986 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research were to study the effects of such parameters as fiber aspect ratio, fiber orientation and fiber/matrix properties on damping in fiber reinforced polymer composites. These objectives were to be met by using both experimental and analytical approaches. The development of improved techniques for fabrication and testing of specimens and the development of relatively simple design equations for prediction of damping were desirable goals which were also met. Two new computer-aided testing techniques based on the impulse frequency response approach were developed. Specimens of graphite/ epoxy, boron/epoxy and Kevlar aramid/epoxy were fabricated by using an autoclave-style press cure which was developed specifically for this program. Although a number of parameters were studied, the emphasis was on the influence of fiber length, fiber orientation and fiber material on damping of polymer composites. The experimental results show that, as predicted, very low fiber aspect ratios are required to produce significant improvements in damping. Of the three fiber types tested, the Kevlar aramid fiber composite was found to have much better damping than graphite or boron fiber composites. Measurements and predictions also indicate that the control of fiber orientation in a continuous fiber reinforced laminate may be a better approach to the improvement of damping than the control of fiber aspect ratio.
Download or read book Mechanics of Composite Materials written by Jacob Aboudi and published by Elsevier. This book was released on 2013-10-22 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decade the author has been engaged in developing a micromechanical composite model based on the study of interacting periodic cells. In this two-phase model, the inclusion is assumed to occupy a single cell whereas the matrix material occupies several surrounding cells. A prominent feature of the micromechanical method of cells is the transition from a medium, with a periodic microstructure to an equivalent homogeneous continuum which effectively represents the composite material. Of great importance is the significant advantage of the cells model in its capability to analyze elastic as well as nonelastic constituents (e.g. viscoelastic, elastoplastic and nonlinear elastic), thus forming a unified approach in the prediction of the overall behaviour of composite material. This book deals almost exclusively with this unified theory and its various applications.
Download or read book Impact Behaviour of Fibre Reinforced Composite Materials and Structures written by S. R. Reid and published by Elsevier. This book was released on 2000-10-12 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study covers impact response, damage tolerance and failure of fibre-reinforced composite materials and structures. Materials development, analysis and prediction of structural behaviour and cost-effective design all have a bearing on the impact response of composites and this book brings together for the first time the most comprehensive and up-to-date research work from leading international experts. - State of the art analysis of impact response, damage tolerance and failure of FRC materials - Distinguished contributors provide expert analysis of the most recent materials and structures - Valuable tool for R&D engineers, materials scientists and designers
Download or read book Fiber metal Composite Materials written by John W. Weeton and published by . This book was released on 1966 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigations of metal matrix materials reinforced with polycrystalline ceramic and metal fibers are reviewed. The results of parametric studies with model systems and of developmental studies with practical engineering materials are described, and an indication of the future potential of fiber-reinforced composites is presented. Model system studies have demonstrated the feasibility of strengthening metal matrices with continuous and discontinuous fibers. Fiber composite materials have been fabricated that follow a law-of-mixtures behavior at room and elevated temperatures for tensile and stress- rupture applications. The importance of fiber length-to-diameter ratios and orientation and of fiber-matrix bonding and interaction also have been indicated. Results achieved in preliminary attempts to produce engineering materials have been encouraging. The potential of fiber -reinforced metal composite materials is suggested by the excellent strength of materials currently available in fiber form. Increased fiber strength can be A" 33" achieved, which adds further to the advantage of composite materials
Download or read book Improvement and Optimization of Internal Damping of Fiber Reinforced Composite Materials written by and published by . This book was released on 1985 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis of material damping and optimization of both material damping and specific stiffness of laminated, continuous or discontinuous fiber reinforced polymer matrix is the major objective of this study. The analytical solution was achieved by using a force-balanced model to derive the equivalent modulus of unidirectional aligned short fiber composites. We then apply the elastic-viscoelastic correspondence principle and separating the real and imaginary parts to obtain the storage and the loss moduli of the composite. In laminated composites we also investigate the influence of interlaminar stress on damping. To this end, we use a finite-element program to evaluate the three- dimensional stress distribution in the plane of each lamina and also at each interface. We then formulate the total strain energy and apply the elastic- viscoelastic correspondence principle to obtain the analytical expression of damping of laminated composites, which is defined as the ratio of the energy dissipated per cycle and the total energy. Analytical results are compared with those obtained from classical two-dimensional lamination theory. Sequential Simplex method, laminated plate theory, and an elastic-viscoelastic correspondence principle are used to optimize both material damping and a specific stiffness of composites.
Download or read book Trends in Composite Materials and their Design written by Mohamed A. Taha and published by Trans Tech Publications Ltd. This book was released on 2010-01-12 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume is indexed by Thomson Reuters BCI (WoS). Composite materials are increasingly finding use in diverse applications requiring a wide range of property and performance requirements. Low density, high specific strength and stiffness are the main features that make composite materials most suitable for structural applications. The field covers the concurrent manipulation of the materials composition and of the internal architecture of the composite in order to obtain the desired properties. The ability to tailor composite materials precisely is of great importance in structural applications. A systematic approach to the optimum tailoring of composite materials is a challenging design problem. The focus should be on the practical design aspects, and that is what is addressed in this special-topic volume.
Download or read book Carbon Fibers and Their Composites written by Peter Morgan and published by CRC Press. This book was released on 2005-05-20 with total page 1200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most literature pertaining to carbon fibers is of a theoretical nature. Carbon Fibers and their Composites offers a comprehensive look at the specific manufacturing of carbon fibers and graphite fibers into the growing surge of diverse applications that include flameproof materials, protective coatings, biomedical and prosthetics application
Download or read book Modal Testing written by D. J. Ewins and published by John Wiley & Sons. This book was released on 2009-07-20 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: All the steps involved in planning, executing, interpreting and applying the results from a modal test are described in straightforward terms. This edition has brought the previous book up to date by including all the new and improved techniques that have emerged during the 15 years since the first edition was written, especially those of signal processing and modal analysis. New topics are introduced, notable amongst them are the application of modal testing to rotating machinery and the use of scanning laser vibrometer.
Download or read book Composite Materials A Survey of the Damping Capacity of Fiber Reinforced Composites written by Charles W. Bert and published by . This book was released on 1980 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: A discussion is given on the importance of damping in fiber-reinforced composites and is followed by concise definitions of the various measures of damping. The current state of the theory of damping in fiber-reinforced composites is reviewed for perfectly-bonded viscoelastic composites, yielding-matrix composites, and those in which slip takes place at the fiber-matrix interface. General trends in stiffness and damping of composites with polymeric matrices are reviewed. (Author).
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.
Download or read book Discontinuous Fibre Reinforced Composites written by Kheng Lim Goh and published by Springer. This book was released on 2016-10-22 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a simple and unified approach to the mechanics of discontinuous-fibre reinforced composites, and introduces readers as generally as possible to the key concepts regarding the mechanics of elastic stress transfer, intermediate modes of stress transfer, plastic stress transfer, fibre pull-out, fibre fragmentation and matrix rupture. These concepts are subsequently applied to progressive stages of the loading process, through to the composite fractures. The book offers a valuable guide for advanced undergraduate and graduate students attending lecture courses on fibre composites. It is also intended for beginning researchers who wish to develop deeper insights into how discontinuous fibre provides reinforcement to composites, and for engineers, particularly those who wish to apply the concepts presented here to design and develop discontinuous-fibre reinforced composites.
Download or read book Polymer Matrix Composites and Technology written by Ru-Min Wang and published by Elsevier. This book was released on 2011-07-14 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given such properties as low density and high strength, polymer matrix composites have become a widely used material in the aerospace and other industries. Polymer matrix composites and technology provides a helpful overview of these materials, their processing and performance.After an introductory chapter, part one reviews the main reinforcement and matrix materials used as well as the nature of the interface between them. Part two discusses forming and molding technologies for polymer matrix composites. The final part of the book covers key aspects of performance, including tensile, compression, shear and bending properties as well as impact, fatigue and creep behaviour.Polymer matrix composites and technology provides both students and those in industry with a valuable introduction to and overview of this important class of materials. - Provides a helpful overview of these materials, their processing and performance incorporating naming and classification of composite materials - Reviews the main reinforcement and matrix materials used as well as the nature of the interface between them including damage mechanisms - Discusses forming and molding technologies for polymer matrix composites outlining various techniques and technologies
Download or read book An Introduction to Composite Materials written by D. Hull and published by Cambridge University Press. This book was released on 1996-08-13 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edition has been greatly enlarged and updated to provide both scientists and engineers with a clear and comprehensive understanding of composite materials. In describing both theoretical and practical aspects of their production, properties and usage, the book crosses the borders of many disciplines. Topics covered include: fibres, matrices, laminates and interfaces; elastic deformation, stress and strain, strength, fatigue crack propagation and creep resistance; toughness and thermal properties; fatigue and deterioration under environmental conditions; fabrication and applications. Coverage has been increased to include polymeric, metallic and ceramic matrices and reinforcement in the form of long fibres, short fibres and particles. Designed primarily as a teaching text for final-year undergraduates in materials science and engineering, this book will also interest undergraduates and postgraduates in chemistry, physics, and mechanical engineering. In addition, it will be an excellent source book for academic and technological researchers on materials.
Download or read book Energy Dissipation in Composite Materials written by Peter A. Zinoviev and published by CRC Press. This book was released on 1994-04-19 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with damping or energy dissipation processes in vibrating solids. It includes information on the methods of approach to describing energy dissipation processes in materials. The book contains basic results which describe the dissipative response of anisotropic bodies and composites.
