Download or read book The Effect of Moisture on Carbon Fiber Reinforced Epoxy Composites I Diffusion written by Joseph M. Augl and published by . This book was released on 1976 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical models are suggested for calculating the reduced moisture diffusivities in unidirectional carbon fiber reinforced composites with hexagonal and tetragonal fiber alignment, parallel and perpendicular to the fiber direction, as a function of fiber volume fraction. The effective diffusion coefficients measured perpendicular to the fiber direction of 6 carbon fiber composites were determined as a function of temperature and relative humidity. The knowledge of the diffusion coefficients as a function of temperature, relative humidity, fiber volume fraction and composite geometry allow the prediction of the internal moisture distribution in a composite if the environment can be specified. A few simple examples have been illustrated. (Author).
Download or read book The Effect of Moisture on Carbon Fiber REinforced Epoxy Composites II Mechanical Property Changes written by and published by . This book was released on 1977 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: The changes in the matrix dominated flexural and short beam shear strengths of six carbon fiber composites were determined as a function of temperature and absorbed moisture. Moisture absorption led to a strength reduction between 10 and 40 percent, depending on temperature, but this reduction in strength leveled out after equilibrium was reached with the surrounding environment. It was concluded that this loss in strength is due to a reduction in resin modulus over a wide temperature range caused by the plasticizing effect of moisture on the matrix. This loss in resin modulus was reversible, and the original dry modulus-temperature-curve was regained after the absorbed moisture was removed; simultaneously the original composite dry strength was recovered. (Author).
Download or read book The Effect of Moisture on Carbon Fiber Reinforced Composites IV Prediction of Changes in the Elastic Behavior written by J. M. Augl and published by . This book was released on 1977 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: The changes in the elastic behavior of composites due to the reversible moisture absorption can be predicted when the matrix properties (E sub m and Nu sub m) have been determined as a function of temperature and moisture concentration. The composite is analyzed in terms of artificial delta-layers, analogous to laminated plate theory. If in addition the diffusion coefficient of moisture for the composite is known as a function of temperature one can predict the elastic behavior for any 'reasonable' environment as a function of time. (Author).
Download or read book Fiber Matrix and Interface Properties written by Christopher J. Spragg and published by ASTM International. This book was released on 1996 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emphasizing fiber-matrix adhesion and its characterization in composite materials, reports results from applying the most commonly used test methods, such as fragmentation, pull-out, and indentation, to high-performance composites and their constituents. The 13 papers were presented at a symposium i
Download or read book The Effect of Moisture on Carbon Fiber Reinforced Composites written by Joseph M. Augl and published by . This book was released on 1977 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two methods are described to model the moisture uptake and internal distribution in fiber reinforced organic composites in real outdoor environments. Required for the calculations are the diffusion coefficients of the composites as a fraction of temperature and the moisture equilibrium concentration as a function of relative humidity. The effect of moisture barriers is briefly discussed. (Author).
Download or read book Application of Fracture Mechanics to Composite Materials written by K. Friedrich and published by Elsevier. This book was released on 2012-12-02 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: This multiauthor volume provides a useful summary of current knowledge on the application of fracture mechanics to composite materials. It has been written to fill the gap between the literature on fundamental principles of fracture mechanics and the special publications on the fracture properties of conventional materials, such as metals, polymers and ceramics.The data are represented in the form of about 420 figures (including diagrams, schematics and photographs) and 80 tables. The author index covers more than 500 references, and the subject index more than 1000 key words.
Download or read book Mechanical and Dynamic Properties of Biocomposites written by Senthilkumar Krishnasamy and published by John Wiley & Sons. This book was released on 2021-06-21 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical and Dynamic Properties of Biocomposites A comprehensive review of the properties of biocomposites and their applications Mechanical and Dynamic Properties of Biocomposites offers a comprehensive overview of the mechanical and dynamic properties of biocomposites and natural fiber-reinforced polymer composites. This essential resource helps with materials selection in the development of products in the fields of automotive and aerospace engineering as well as the construction of structures in civil engineering. With contributions from a panel of experts in the field, the book reviews the mechanical and damping properties of lingo-cellulosic fibers and their composites. The authors highlight the factors that contribute to the improved properties and their advancements in modern industrialization. Besides, the book is designed to (a) introduce the mechanical and damping properties of lingo-cellulosic fibers and their composites, (b) factors that contribute to improvement in properties such as hybridization, chemical treatment of natural fibers, additive or fillers, etc. and (c) the real-time applications with case studies and future prospects. Key features: Presents viable alternatives to conventional composites Examines the environmentally friendly and favorable mechanical properties of biocomposites Reviews the potential applications of biocomposites in the fields of automotive, mechanical and civil engineering Brings together in one comprehensive resource information found scattered across the professional literature Written for materials scientists, polymer chemists, chemists in industry, civil engineers, construction engineers, and engineering scientists in industry, Mechanical and Dynamic Properties of BIocomposites offers a compreshensive review of the properties and applications of biocomposites.
Download or read book Strengthening and Rehabilitation of Civil Infrastructures Using Fibre Reinforced Polymer FRP Composites written by L C Hollaway and published by Elsevier. This book was released on 2008-07-18 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: The repair of deteriorated, damaged and substandard civil infrastructures has become one of the most important issues for the civil engineer worldwide. This important book discusses the use of externally-bonded fibre-reinforced polymer (FRP) composites to strengthen, rehabilitate and retrofit civil engineering structures, covering such aspects as material behaviour, structural design and quality assurance.The first three chapters of the book review structurally-deficient civil engineering infrastructure, including concrete, metallic, masonry and timber structures. FRP composites used in rehabilitation and surface preparation of the component materials are also reviewed. The next four chapters deal with the design of FRP systems for the flexural and shear strengthening of reinforced concrete (RC) beams and the strengthening of RC columns. The following two chapters examine the strengthening of metallic and masonry structures with FRP composites. The last four chapters of the book are devoted to practical considerations in the flexural strengthening of beams with unstressed and prestressed FRP plates, durability of externally bonded FRP composite systems, quality assurance and control, maintenance, repair, and case studies.With its distinguished editors and international team of contributors, Strengthening and rehabilitation of civil infrastructures using fibre-reinforced polymer (FRP) composites is a valuable reference guide for engineers, scientists and technical personnel in civil and structural engineering working on the rehabilitation and strengthening of the civil infrastructure. - Reviews the use of fibre-reinforced polymer (FRP) composites in structurally damaged and sub-standard civil engineering structures - Examines the role and benefits of fibre-reinforced polymer (FRP) composites in different types of structures such as masonry and metallic strengthening - Covers practical considerations including material behaviour, structural design and quality assurance
Download or read book Stress Analysis of Fiber reinforced Composite Materials written by M. W. Hyer and published by DEStech Publications, Inc. This book was released on 2009 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: Updated and improved, Stress Analysis of Fiber-Reinforced Composite Materials, Hyer's work remains the definitive introduction to the use of mechanics to understand stresses in composites caused by deformations, loading, and temperature changes. In contrast to a materials science approach, Hyer emphasizes the micromechanics of stress and deformation for composite material analysis. The book provides invaluable analytic tools for students and engineers seeking to understand composite properties and failure limits. A key feature is a series of analytic problems continuing throughout the text, starting from relatively simple problems, which are built up step-by-step with accompanying calculations. The problem series uses the same material properties, so the impact of the elastic and thermal expansion properties for a single-layer of FR material on the stress, strains, elastic properties, thermal expansion and failure stress of cross-ply and angle-ply symmetric and unsymmetric laminates can be evaluated. The book shows how thermally induced stresses and strains due to curing, add to or subtract from those due to applied loads.Another important element, and one unique to this book, is an emphasis on the difference between specifying the applied loads, i.e., force and moment results, often the case in practice, versus specifying strains and curvatures and determining the subsequent stresses and force and moment results. This represents a fundamental distinction in solid mechanics.
Download or read book Structural Health Monitoring of Aerospace Composites written by Victor Giurgiutiu and published by Academic Press. This book was released on 2015-09-08 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural Health Monitoring of Aerospace Composite Structures offers a comprehensive review of established and promising technologies under development in the emerging area of structural health monitoring (SHM) of aerospace composite structures. Beginning with a description of the different types of composite damage, which differ fundamentally from the damage states encountered in metallic airframes, the book moves on to describe the SHM methods and sensors currently under consideration before considering application examples related to specific composites, SHM sensors, and detection methods. Expert author Victor Giurgiutiu closes with a valuable discussion of the advantages and limitations of various sensors and methods, helping you to make informed choices in your structure research and development. - The first comprehensive review of one of the most ardent research areas in aerospace structures, providing breadth and detail to bring engineers and researchers up to speed on this rapidly developing field - Covers the main classes of SHM sensors, including fiber optic sensors, piezoelectric wafer active sensors, electrical properties sensors and conventional resistance strain gauges, and considers their applications and limitation - Includes details of active approaches, including acousto-ultrasonics, vibration, frequency transfer function, guided-wave tomography, phased arrays, and electrochemical impedance spectroscopy (ECIS), among other emerging methods
Download or read book Epoxy Composites written by Jyotishkumar Parameswaranpillai and published by John Wiley & Sons. This book was released on 2021-06-01 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discover a one-stop resource for in-depth knowledge on epoxy composites from leading voices in the field Used in a wide variety of materials engineering applications, epoxy composites are highly relevant to the work of engineers and scientists in many fields. Recent developments have allowed for significant advancements in their preparation, processing and characterization that are highly relevant to the aerospace and automobile industry, among others. In Epoxy Composites: Fabrication, Characterization and Applications, a distinguished team of authors and editors deliver a comprehensive and straightforward summary of the most recent developments in the area of epoxy composites. The book emphasizes their preparation, characterization and applications, providing a complete understanding of the correlation of rheology, cure reaction, morphology, and thermo-mechanical properties with filler dispersion. Readers will learn about a variety of topics on the cutting-edge of epoxy composite fabrication and characterization, including smart epoxy composites, theoretical modeling, recycling and environmental issues, safety issues, and future prospects for these highly practical materials. Readers will also benefit from the inclusion of: A thorough introduction to epoxy composites, their synthesis and manufacturing, and micro- and nano-scale structure formation in epoxy and clay nanocomposites An exploration of long fiber reinforced epoxy composites and eco-friendly epoxy-based composites Practical discussions of the processing of epoxy composites based on carbon nanomaterials and the thermal stability and flame retardancy of epoxy composites An analysis of the spectroscopy and X-ray scattering studies of epoxy composites Perfect for materials scientists, polymer chemists, and mechanical engineers, Epoxy Composites: Fabrication, Characterization and Applications will also earn a place in the libraries of engineering scientists working in industry and process engineers seeking a comprehensive and exhaustive resource on epoxy composites.
Download or read book Natural Fiber Reinforced Composites written by Senthilkumar Krishnasamy and published by John Wiley & Sons. This book was released on 2022-04-18 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural Fiber-Reinforced Composites In-depth overview of thermal analysis of natural fiber-reinforced composites In Natural Fiber-Reinforced Composites: Thermal Properties and Applications, a team of distinguished researchers has delivered a comprehensive overview of the thermal properties of natural fiber-reinforced polymer composites. The book brings together information currently dispersed throughout the scientific literature and offers viable and environmentally friendly alternatives to conventional composites. The book highlights the thermal analysis of natural fiber-reinforced composites with techniques such as Thermogravimetric Analysis, Dynamic Mechanical Analysis, Thermomechanical Analysis, Differential Scanning Calorimetry, etc. This book provides: A thorough review of the thermal characterization of natural fiber-based hybrid composites Detailed investigation of the thermal properties of polymer composites reinforced with various natural fibers such as flax fiber, pineapple leaf fiber, sisal, sugar palm, grass fiber and cane fiber Discussions on the thermal properties of hybrid natural fiber-reinforced composites with various thermosetting and thermoplastic polymers Influence of nanofillers on the thermal stability and thermal decomposition characteristics of the natural fiber-based hybrid composites Natural Fiber-Reinforced Composites: Thermal Properties and Applications is a must-read for materials scientists, polymer chemists, and professionals working in the industry. This book is ideal for readers seeking to make an informed decision regarding materials selection for applications involving thermal insulation and elevated temperature. The suitability of natural fiber-reinforced composites in the automotive, mechanical, and civil engineering sectors is highlig
Download or read book Mechanical Testing of Advanced Fibre Composites written by J M Hodgkinson and published by Elsevier. This book was released on 2000-10-27 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Testing of composite materials can present complex problems but is essential in order to ensure the reliable, safe and cost-effective performance of any engineering structure. This essentially practical book, complied from the contributions of leading professionals in the field, describes a wide range of test methods which can be applied to various types of advanced fibre composites. The book focuses on high modulus, high strength fibre/plastic composites and also covers highly anisotrpoic materials such as carbon, aramid and glass.Engineers and designers specifying the use of materials in structures will find this book an invaluable guide to best practice throughout the range of industrial sectors where FRCs are employed.
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 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 Computational Homogenization of Heterogeneous Materials with Finite Elements written by Julien Yvonnet and published by Springer. This book was released on 2019-06-11 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph provides a concise overview of the main theoretical and numerical tools to solve homogenization problems in solids with finite elements. Starting from simple cases (linear thermal case) the problems are progressively complexified to finish with nonlinear problems. The book is not an overview of current research in that field, but a course book, and summarizes established knowledge in this area such that students or researchers who would like to start working on this subject will acquire the basics without any preliminary knowledge about homogenization. More specifically, the book is written with the objective of practical implementation of the methodologies in simple programs such as Matlab. The presentation is kept at a level where no deep mathematics are required.
Download or read book Effects of Moisture on the Properties of High Performance Structural Resins and Composites written by CE. Browning and published by . This book was released on 1974 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphite, boron, S-glass, and DuPont's PRD-49-III fiber reinforced composites, as well as castings of current epoxy resin systems, were evaluated to determine the effects of moisture and high humidity on their physical properties and their room- and elevated-temperature mechanical properties. All of the neat resin castings were found to absorb moisture and swell. Associated with moisture absorption is a loss in elevated-temperature tensile strength. All of the composite systems showed weight gains and thickness increases when subjected to a high-humidity environment. However, the effect of absorbed moisture on the elevated-temperature mechanical properties of composites is determined principally by fiber orientation and test method employed. Unidirectional composites may show a significant reduction of 350°F (177°C) flexural strength due to absorbed moisture, whereas a multidirectional lay-up may show only a minor loss of 350°F tensile strength after equivalent moisture absorption. Fiber-controlled composite properties are relatively unaffected by absorbed moisture whereas matrix-controlled properties are adversely affected.
