Download or read book Effect of Interfacial Properties on the Fiber Fragmentation Process in Polymer Matrix Composites written by Voleti, SR. and published by . This book was released on 2006 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fiber Fragmentation test or Single Fiber Composite test (SFC) has been widely used to characterize the interfacial behavior in composites. Though it is accepted that SFC gives useful information about the interfacial bond quality and the fiber strength, there is no clear consensus on how to interpret the data and quantify the interfacial properties. In this paper, the fiber fragmentation test is modeled with the objective of studying the effect of interfacial bond strength and post-debonding frictional effects on the progress of the fragmentation process. The load transfer at the fiber-matrix interface is modeled using the shear-lag principles and the statistical variation of fiber strength is incorporated using Weibull theory. A parametric study of the variation of interfacial shear properties on the mean fragment length and debond progression with applied strain is conducted. It is found that in the case of weak interfaces saturation of fiber fragments occurs at much lower applied strain values and is usually associated with extensive debonding. The numerical simulation shows that the fragmentation results are very much sensitive to the frictional effects as it controls the debonded length. The results from the model are correlated with experimental data to validate the model and for extracting the interfacial properties from the test data.

Download or read book Engineered Interfaces in Fiber Reinforced Composites written by Jang-Kyo Kim and published by Elsevier. This book was released on 1998-10-21 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study and application of composite materials are a truly interdisciplinary endeavour that has been enriched by contributions from chemistry, physics, materials science, mechanics and manufacturing engineering. The understanding of the interface (or interphase) in composites is the central point of this interdisciplinary effort. From the early development of composite materials of various nature, the optimization of the interface has been of major importance. While there are many reference books available on composite materials, few of them deal specifically with the science and mechanics of the interface of fiber reinforced composites. Further, many recent advances devoted solely to research in composite interfaces have been scattered in a variety of published literature and have yet to be assembled in a readily accessible form. To this end this book is an attempt to bring together recent developments in the field, both from the materials science and mechanics perspective, in a single convenient volume.The central theme of the book is tailoring the interface properties to optimise the mechanical peformance and structural integrity of composites with enhanced strength/stiffness and fracture toughness (or specific fracture resistance). It deals mainly with interfaces in advanced composites made from high performance fibers, such as glass, carbon, aramid, ultra high modulus polyethylene and some inorganic (e.g. B/W, A12O3, SiC) fibers, and matrix materials encompassing polymers, metals/alloys and ceramics. The book is intended to provide a comprehensive treatment of composite interfaces in such a way that it should be of interest to materials scientists, technologists and practising engineers, as well as graduate students and their supervisors in advanced composites. We hope that this book will also serve as a valuable source of reference to all those involved in the design and research of composite interfaces.The book contains eight chapters of discussions on microstructure-property relationships with underlying fundamental mechanics principles. In Chapter 1, an introduction is given to the nature and definition of interfaces in fiber reinforced composites. Chapter 2 is devoted to the mechanisms of adhesion which are specific to each fiber-matrix system, and the physio-chemical characterization of the interface with regard to the origin of adhesion. The experimental techniques that have been developed to assess the fiber-matrix interface bond quality on a microscopic scale are presented in Chapter 3, along with the techniques of measuring interlaminar/intralaminar strengths and fracture toughness using bulk composite laminates. The applicability and limitations associated with loading geometry and interpretation of test data are compared. Chapter 4 presents comprehensive theoretical analyses based on shear-lag models of the single fiber composite tests, with particular interest being placed on the interface debond process and the nature of the fiber-matrix interfacial bonding. Chapter 5 is devoted to reviewing current techniques of fiber surface treatments which have been devised to improve the bond strength and the fiber-matrix compatibility/stability during the manufacturing processes of composites. The micro-failure mechanisms and their associated theories of fracture toughness of composites are discussed in Chapter 6. The roles of the interface and its effects on the mechanical performance of fiber composites are addressed from several viewpoints. Recent research efforts to augment the transverse and interlaminar fracture toughness by means of controlled interfaces are presented in Chapters 7 and 8.

Download or read book Advanced Topics in Characterization of Composites written by Michael R. Kessler and published by Trafford Publishing. This book was released on 2004 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Topics in Characterization of Composites is a product of the ''Characterization of Composite Materials" graduate course in the Department of Mechanical Engineering at The University of Tulsa. It contains a series of chapters describing characterization techniques for polymer-matrix composite materials. Topics covered include: -thermal analysis using DSC, -residual stresses, -single-fiber fragmentation testing, -creep and creep nature, -impact testing, -infrared thermography, -air-coupled ultrasonics, -structural health monitoring, and -fractography. The chapters include comprehensive literature reviews, background information, and best practices in experimental composites evaluation.

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 Carbon Nanotube polymer Composites written by Dimitrios Tasis and published by Royal Society of Chemistry. This book was released on 2013 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to summarize the basic chemical aspects for obtaining multifunctional carbon nanotube-based polymer composites, but also to highlight some of the most remarkable advances that occurred in the field during the last recent years.

Download or read book Interfacial Phenomena in Composite Materials 91 written by Ignaas Verpoest and published by Elsevier. This book was released on 2017-05-04 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interfacial Phenomena in Composite Materials '91 is a collection of papers dealing with the science of composite interfaces, with emphasis on theoretical modeling, test methods, and characterization methods of polymer matrix, metal, or ceramic matrix composites. One paper reviews the micromechanical test methods used in evaluating mechanical properties of fiber-matrix interface. Another paper shows that the critical fiber length cannot always be considered a material constant in the framework of load transfer models based on the shear lag theory. Microwave plasma treatment is a quick technology to change fiber surface structure as the oxidation or the roughening of the fiber increases fiber-matrix adhesion. Another paper evaluates the effect of improved adhesion on mechanical performance under static, dynamic, and impact conditions. It also examines the role of fiber anisotropy on the performance of high performance polyethylene/epoxy composites. By using the Laser Raman Spectroscopy, the investigator can analyze the effects of the fiber surface treatment, the fiber modulus, the curing temperature on the Shear strength, and the fracture mechanics of the interface. The collection can be read profitably by chemists, biochemists, and academicians involved in material compound research.

Download or read book Effect of Moisture on the Interfacial Shear Strength written by BA. Pratt and published by . This book was released on 1997 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of absorbed moisture on the interfacial strength of a carbon fiber/epoxy matrix composite has been studied using the single fiber fragmentation test. The absorption of 1.40% moisture produced a reduction less than 20% in the interfacial shear strength. This reduction in interfacial strength may be associated with a reduction in the residual compressive stresses at the fiber/matrix interface associated with the cooldown from the curing temperature, a weakening of the chemical adhesion, or a softening of the matrix giving failure by interphase yielding. These results suggest that long-term durability of carbon fiber/epoxy matrix composites in seawater may not be much affected by absorbed seawater.

Download or read book Effect of Surface Chemistry on the Interfacial Adhesion and Mechanical Properties of Natural Fiber Reinforced Polymer Composites written by Guangda Shi and published by . This book was released on 2003 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interfacial Bonding Characteristics in Natural Fiber Reinforced Polymer Composites written by Senthilkumar Krishnasamy and published by Springer Nature. This book was released on 2024-01-17 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a general overview of the importance of fibre-matrix interfacial bonding characteristics in natural fibre-based composites to obtain optimal material properties for a specific application. Composites materials are prepared by combining fibres and polymers to achieve superior materials properties than those of the individual components. Composite materials are used to produce lightweight components with increased stiffness and strength; their properties can also be tailored for any specific applications. The glass fibre reinforced composites dominate 95% of the thermoplastic and thermoset-based composites. However, the natural fibre reinforced composites can give competition to the glass fibres due to their advantages such as biodegradability, low density, low cost, and good mechanical properties. This book looks into biocomposites and its important aspect of optimization of materials’ performance by fine-tuning the fibre-matrix bonding characteristics. The chapters in the book look at different plant fibres such as kenaf, pineapple leaf, jute, date palm, luffa, cotton, hemp, wood, bamboo, flax, and straw and the different approaches to enhance the fibre-matrix interfacial bonding through physical and/or chemical treatment methods. It demonstrates that the nature of fibre-matrix bonding has a significant effect on the properties such as tensile, flexural, impact, inter-laminar shear strength, moisture absorption, thickness swelling, thermal, chemical, damping, creep, and fatigue. Its content appeals to academics, students, researcher, and scientist who are working in the field to produce biodegradable and recyclable materials in the composite industry.

Download or read book Interfaces in Polymer Matrix Composites written by Edwin P. Plueddemann and published by Elsevier. This book was released on 2016-06-03 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite Materials, Volume 6: Interfaces in Polymer Matrix Composites covers the interface region as deduced from extensive practical studies of composite properties and from scientific studies of surfaces and surface modifiers. The book starts by providing a historical background on the studies and theories of the interface. The text then discusses the mechanics of load transfer at the interface; the surface chemistry of moisture-induced composite failure; and radioisotope studies of coupling agents at the interface. The use of silane coupling agents in particulate mineral filled composites; the mechanism of adhesion through silane coupling agents; as well as the high-modulus fibers and the fiber-resin interface in resin composites are also considered. Materials scientists, materials engineers, and design engineers will find the book invaluable.

Download or read book The Effect of Fiber Coating Thickness on the Interfacial Properties of a Continuous Fiber Ceramic Matrix Composite written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Fiber and Interfacial Layer Architectures on the Thermoplastic Response of Metal Matrix Composites written by Marek-Jerzy Pindera and published by . This book was released on 1992 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fiber Reinforced Ceramic Composites written by K.S. Mazdiyasni and published by William Andrew. This book was released on 1990-12-31 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the first comprehensive treatment of continuous and discontinuous ceramic fiber and whisker reinforced ceramic composites, written by 29 authorities in the field.

Download or read book The Interfacial Interactions in Polymeric Composites written by Güneri Akovali and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer composites represent materials of great and of continuously growing importance. Their potential for application appears to be limitless. They have been the subject of numerous studies both at academic and industrial levels. Much progress has been made in the incisive formulation of composites; sophisticated methods of property evaluation have been developed in the past decade and many, largely empirical solutions have been proposed to resolve the problem of their long-term performance under typical conditions of use (i. e. the use of silane or titane coupling agents to enhance adhesion within composite materials). Assuredly one of the most essential factors in the performance of these systems is the condition of the interface and interphase among the constituents of a given system. It has become clear that it is the interface/interphase, and the interactions which take place in this part of a system, which determine to a significant degree the initial properties of the material. In order to achieve leadership in the formulation and application of polymer composites, it is evident that in depth understanding of interfacial and interphase phenomena becomes a prerequisite.

Download or read book Interfacial Phenomena in Composite Materials 89 written by F. R. Jones and published by Butterworth-Heinemann. This book was released on 1989 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of an international conference held at the University of Sheffield, UK. Sept. 5-7, 1989. Papers address topics relevant to the assessment of fiber-matrix adhesion; micromechanics of adhesion testing; interfaces in carbon fiber composites; interfaces in polymer matrix composites, metal matrix composites; and ceramic matrix composites. No subject index. Annotation copyrighted by Book News, Inc., Portland, OR

Download or read book Effects of Civil Engineering Environments on Interfacial Properties of Polymer Glass Fiber Composites written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt: