Download or read book Micromechanics of Ceramic Matrix Composites at Elevated Temperatures written by Longbiao Li and published by Springer Nature. This book was released on with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Temperature Mechanical Behaviour of Ceramic Composites written by Karl Jakus and published by Elsevier. This book was released on 1995-06-28 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Temperature Mechanical Behavior of Ceramic Composites provides an up-to-date comprehensive coverage of the mechanical behavior of ceramic matrix composites at elevated temperatures. Topics include both short-term behavior (strength, fracture toughness and R-curve behavior) and long-term behavior (creep, creep-fatigue, delayed failure and lifetime). Emphasis is on a review of fundamentals and on the mechanics and mechanisms underlying properties. This is the first time that complete information of elevated temperature behavior of ceramic composites has ever been compacted together in a single volume. Of particular importance is that each chapter, written by internationally recognized experts, includes a substantial review component enabling the new material to be put in proper perspective. Shanti Nair is Associate Professor at the Department of Mechanical Engineering at the University of Massachusetts at Amherst. Karl Jakus is Professor at the University of Massachusetts at Amherst.

Download or read book High Temperature Ceramic Matrix Composites written by Walter Krenkel and published by Wiley-VCH. This book was released on 2001 with total page 1044 pages. Available in PDF, EPUB and Kindle. Book excerpt: The extreme high temperature stability and damage tolerance of materials and components required for space, terrestrial, energetic and many other applications can only be achieved by ceramic materials. All over the world research is going on to develop ceramics with quasiductile behaviour. The materials with the highest potential for high temperature applications are fibre reinforced ceramic matrix composites (CMC). The international conference HT-CMC 4 in Munich will continue the tradition of its successful predecessor meetings held in Bordeaux (France, 1993), Santa Barbara (USA, 1995) and Osaka (Japan, 1998). This conference series has been recognized as the central meeting event in high temperature CMC science and technology and demonstrates the great interest in research and development on reinforced ceramics. The Proceedings of this conference will therefore be a valuable reference for every materials scientist or engineer involved in this field of high-tech materials development.

Download or read book Time Dependent Mechanical Behavior of Ceramic Matrix Composites at Elevated Temperatures written by Longbiao Li and published by Springer Nature. This book was released on 2020-04-18 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates the time-dependent behavior of fiber-reinforced ceramic-matrix composites (CMCs) at elevated temperatures. The author combines the time-dependent damage mechanisms of interface and fiber oxidation and fracture with the micromechanical approach to establish the relationships between the first matrix cracking stress, matrix multiple cracking evolution, tensile strength, tensile stress-strain curves and tensile fatigue of fiber-reinforced CMCs and time. Then, using damage models of energy balance, the fracture mechanics approach, critical matrix strain energy criterion, Global Load Sharing criterion, and hysteresis loops he determines the first matrix cracking stress, interface debonded length, matrix cracking density, fibers failure probability, tensile strength, tensile stress-strain curves and fatigue hysteresis loops. Lastly, he predicts the time-dependent mechanical behavior of different fiber-reinforced CMCs, i.e., C/SiC and SiC/SiC, using the developed approaches, in order to reduce the failure risk during the operation of aero engines. The book is intended for undergraduate and graduate students who are interested in the mechanical behavior of CMCs, researchers investigating the damage evolution of CMCs at elevated temperatures, and designers responsible for hot-section CMC components in aero engines.

Download or read book High Temperature Micromechanics and Mechanisms of Damage and Failure in Advanced Ceramic Matrix Composites written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this project, research efforts have been made to address some of the most critical and complex issues on high-temperature damage, degradation and failure of advanced composites. For the convenience of program planning and execution, the research as been formulated in the form of several interrelated technical tasks with distinct focuses. In the study of high-temperature ceramic-matrix the following tasks have been conducted: (1) High-temperature fiber/matrix interface properties and failure mechanics; (2) High-temperature micromechanics theories for thermoelastic constitutive equations for whisker-reinforced ceramic composites with large temperature traverse; (3) High-temperature creep deformation and micromechanics modeling of inelastic composite constitutive properties with composite microstructure and damage, and (4) High-temperature toughening mechanisms, and mechanics of crack growth fracture. For the high-temperature polymer-matrix composite study, the following thermomechanics issues with internal and external damage have been addressed: (1) thermal oxidation reaction and stability at elevated temperatures; (2) chemical and physical aging in extreme thermal environments; (3) microstructure changes and property degradation associated with aging at elevated temperatures; and (4) long-term thermomechanical creep and associated damage modes.

Download or read book Micromechanical Prediction of Tensile Damage for Ceramic Matrix Composites Under High Temperature written by F. Delale and published by . This book was released on 1994 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the experimental and theoretical results obtained in studying the tensile damage behavior of ceramic matrix Composites (namely Nicalon/CAS II Composites) at room and elevated temperatures. First the composite Specimens were machined into dog-bone shape and polished to increase efficacy of observation in the SEM. Then the specimens were placed inside the chamber of a Scanning electron microscope (SEM) and subject to tensile loading at room and higher temperatures up to 700 deg c. At each temperature, the load was increased until failure of the specimen and the progression of damage was observed and recorded from first crack to total failure. Damage usually started with matrix cracking, followed by debonding along fiber-matrix interface, fiber pullout and finally fiber breakage. At each load level, the displacement was measured, resulting in a stress-strain curve with linear and non-linear portion. Similar behavior was observed at higher temperatures. Theoretical models to predict and simulate the observed behavior were also developed. A singular integral with periodic matrix cracking and interface debonding explains well the fact that embedded matrix cracks almost always propagate to the interface and are arrested by the fibers. The results obtained from finite element model with multiple rows of matrix cracks and debonding at the fiber-matrix interface, compare extremely well with the experimental data.

Download or read book High Temperature Ceramic Matrix Composites written by R. Naslain and published by Woodhead Publishing Limited. This book was released on 1993 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Temperature Ceramic Matrix Composites 5 written by and published by . This book was released on 2005 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Temperature Ceramic Matrix Composites 8 written by Litong Zhang and published by John Wiley & Sons. This book was released on 2014-05-19 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings contains 78 papers from the 8th International Conference on High Temperature Ceramic Matrix Composites, held September 22-26, 2013 in Xi'an, Shaanxi, China. Chapters include: Ceramic Genome, Computational Modeling, and Design Advanced Ceramic Fibers, Interfaces, and Interphases Nanocomposite Materials and Systems Polymer Derived Ceramics and Composites Fiber Reinforced Ceramic MatrixComposites Carbon-Carbon Composites: Materials, Systems, and Applications Ultra High Temperature Ceramics and MAX Phase Materials Thermal and Environmental Barrier Coatings

Download or read book Microcracking of Ceramic Matrix Composites at Elevated Temperature written by Fuh-Gwo Yuan and published by . This book was released on 1999 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ceramic matrix composites (CMC) are potentially designed for use in the high temperature environment because of their high strength and noncatastrophic failure characteristics. For ceramics at elevated temperature, the materials exhibit time-dependent deformation. The phenomenon is further accelerated by an increase in the stress or the temperature. Reinforcement by incorporating high-strength fibers is one of the several approaches to significantly improving the creep fracture resistance of the CMC. Experimental studies in mechanical behavior of CMC (1-4) have shown that failure is preceded by matrix cracking at high temperatures. Further, the creeping matrix causes stress transfer from the matrix to the fiber. However, there is a lack of any investigation in understanding of the relation between the matrix cracking at the micro level and the overall mechanical behavior of CMC at elevated temperature. In this research effort, the crack tip fields for a matrix crack are considered. Using generalized expansions at the crack tip in each region and matching the stresses and displacements across the interface in an asymptotic sense, a series asymptotic solution is constructed for the stresses and strain rates near the crack tip. It is found that the stress singularities, to the leading order, are the same in each material, oscillatory higher-order terms exist in both regions, and stress higher-order term with the order of O(r(exp 0)) appears in the elastic material. The stress exponents and the angular distributions for singular terms and higher order terms are obtained for different creep exponents. A full agreement between asymptotic solutions and the full-field finite element solutions has been obtained.

Download or read book Ceramic Matrix Composites Volume 365 written by Richard A. Lowden and published by . This book was released on 1995-08-10 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials that possess low-weight, high-temperature strength and stability in corrosive environments are required for many advanced applications. Among competing materials, ceramic matrix composites (CMCs) are the leading candidates. As with all composite systems, ceramic composites are composed of two of more constituents that must maintain identity and properties in the final structure. In fact, it is the combination of constituent properties that produces the desired mechanical response in these advanced structural materials. This book from MRS focuses on ceramic matrix composites, and offers an interdisciplinary perspective on the many unique challenges in design, processing, characterization and testing that they present. Topics include: reinforcements and matrices; matrix materials and processing; composite processing and properties; testing and design; modeling of interfacial behavior; interface test methodologies; chemical vapor infiltration; experimental verification of interface behavior; modification and control of interface properties; and environmental effects.

Download or read book High Temperature Mechanical Behavior of Ceramic Matrix Composites written by Longbiao Li and published by John Wiley & Sons. This book was released on 2021-06-08 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Temperature Mechanical Behavior of Ceramic-Matrix Composites Covers the latest research on the high-temperature mechanical behavior of ceramic-matrix composites Due to their high temperature resistance, strength and rigidity, relatively light weight, and corrosion resistance, ceramic-matrix composites (CMCs) are widely used across the aerospace and energy industries. As these advanced composites of ceramics and various fibers become increasingly important in the development of new materials, understanding the high-temperature mechanical behavior and failure mechanisms of CMCs is essential to ensure the reliability and safety of practical applications. High Temperature Mechanical Behavior of Ceramic-Matrix Composites examines the behavior of CMCs at elevated temperature—outlining the latest developments in the field and presenting the results of recent research on different CMC characteristics, material properties, damage states, and temperatures. This up-to-date resource investigates the high-temperature behavior of CMCs in relation to first matrix cracking, matrix multiple cracking, tensile damage and fracture, fatigue hysteresis loops, stress-rupture, vibration damping, and more. This authoritative volume: Details the relationships between various high-temperature conditions and experiment results Features an introduction to the tensile, vibration, fatigue, and stress-rupture behavior of CMCs at elevated temperatures Investigates temperature- and time-dependent cracking stress, deformation, damage, and fracture of fiber-reinforced CMCs Includes full references and internet links to source material Written by a leading international researcher in the field, High Temperature Mechanical Behavior of Ceramic-Matrix Composites is an invaluable resource for materials scientists, surface chemists, organic chemists, aerospace engineers, and other professionals working with CMCs.

Download or read book Advances in High Temperature Ceramic Matrix Composites and Materials for Sustainable Development written by Mrityunjay Singh and published by John Wiley & Sons. This book was released on 2017-06-29 with total page 693 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global population growth and tremendous economic development has brought us to the crossroads of long-term sustainability and risk of irreversible changes in the ecosystem. Energy efficient and ecofriendly technologies and systems are critically needed for further growth and sustainable development. While ceramic matrix composites were originally developed to overcome problems associated with the brittle nature of monolithic ceramics, today the composites can be tailored for customized purposes and offer energy efficient and ecofriendly applications, including aerospace, ground transportation, and power generation systems. The 9th International Conference on High Temperature Ceramic Matrix Composites (HTCMC 9) was held in Toronto, Canada, June 26-30, 2016 to discuss challenges and opportunities in manufacturing, commercialization, and applications for these important material systems. The Global Forum on Advanced Materials and Technologies for Sustainable Development (GFMAT 2016) was held in conjunction with HTCMC 9 to address key issues, challenges, and opportunities in a variety of advanced materials and technologies that are critically needed for sustainable societal development. This Ceramic Transactions volume contains a collection of peer reviewed papers from the 16 below symposia that were submitted from these two conferences Design and Development of Advanced Ceramic Fibers, Interfaces, and Interphases in Composites- A Symposium in Honor of Professor Roger Naslain Innovative Design, Advanced Processing, and Manufacturing Technologies Materials for Extreme Environments: Ultrahigh Temperature Ceramics (UHTCs) and Nano-laminated Ternary Carbides and Nitrides (MAX Phases) Polymer Derived Ceramics and Composites Advanced Thermal and Environmental Barrier Coatings: Processing, Properties, and Applications Thermomechanical Behavior and Performance of Composites Ceramic Integration and Additive Manufacturing Technologies Component Testing and Evaluation of Composites CMC Applications in Transportation and Industrial Systems Powder Processing Innovation and Technologies for Advanced Materials and Sustainable Development Novel, Green, and Strategic Processing and Manufacturing Technologies Ceramics for Sustainable Infrastructure: Geopolymers and Sustainable Composites Advanced Materials, Technologies, and Devices for Electro-optical and Medical Applications Porous Ceramics for Advanced Applications Through Innovative Processing Multifunctional Coatings for Sustainable Energy and Environmental Applications

Download or read book Understanding Mechanical Properties of Ceramic Matrix Composites Through a Nanoindentation Technique written by Eric LaDell Kyron Jones and published by . This book was released on 2006 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a micromechanics study of a melt infiltrated hi-nicalon/BN(CVI)/SiC (hi-nicalon/boron nitride (chemical vapor infiltration) silicon carbide) composite subjected to monotonic tensile and cyclic fatigue load at room and elevated temperatures, as well as long term annealing in an air-based medium. Obtains from single fiber push-out tests the values of interfacial shear strength as a main parameter defining fatique properties and toughness of SiC/SiC composites. Seeks to establish a nanoindentation push-out technique for interfacial shear strength study.

Download or read book Micromechanical Evaluation of Ceramic Matrix Composites written by and published by . This book was released on 1991 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analytical and experimental studies have been performed to investigate the thermomechanical properties and failure mechanisms in unidirectional ceramic composites in which the ceramic matrix is flawed and variable. Preliminary model for brittle matrix with a periodic hexagonal array of identical fibers has been analyzed on the basis of numerical fracture mechanics to assess criticality of various kinds of cracks. When this composite model is subjected to axial load, it was found that transverse matrix cracks become unstable for perfect bonding and for disbonding between fibers and matrix, while disbond cracks propagating parallel to the fibers tend to stabilize. The Air Force goal of developing high thrust-to-weight turbine engines depends strongly upon the advancement of high temperature ceramic composites. Ceramic materials retain stiffness at very high temperatures but their extreme brittleness precludes their use as structural materials, since cracks propagate easily and catastrophically. When a ceramic matrix is reinforced with unidirectional fibers the effect of cracks changes fundamentally.

Download or read book Effect of Load Rate on Ultimate Tensile Strength of Ceramic Matrix Composites at Elevated Temperatures written by and published by . This book was released on 2001 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High temperature Ceramic matrix Composites written by A. G. Evans and published by . This book was released on 1995 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: