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Characterization Of Mechanical Damage Mechanisms In Ceramic And Polymeric Matrix Composite Materials
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Book Synopsis Characterization of Mechanical Damage Mechanisms in Ceramic and Polymeric Matrix Composite Materials by : James Lankford
Download or read book Characterization of Mechanical Damage Mechanisms in Ceramic and Polymeric Matrix Composite Materials written by James Lankford and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization of Mechanical Damage Mechanisms in Ceramic and Polymeric Matrix Composite Materials by :
Download or read book Characterization of Mechanical Damage Mechanisms in Ceramic and Polymeric Matrix Composite Materials written by and published by . This book was released on 1992 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to better establish the fundamental mechanisms responsible for the onset of microstructural instability during compressive loading, several fiber-reinforced polymeric matrix composites were tested under conditions involving hydrostatic confinement. It was found that the dependence of strength upon pressure was mild, indicating that the overwhelming factor in the compressive failure of these materials, irrespective of fiber type, matrix, composition, and composite architecture, is resistance to shear loading; dilatational mechanisms, certainly ones associated with microfracture, are relatively insignificant. Specific strength levels do appear to be controlled by both inelastic and plastic flow properties of the matrix, and reflect the degree to which the matrix can restrain either the flexure of locally misaligned fibers, or the shear displacement of non-axial cross-plied fibers in more complex composite lay-ups.
Book Synopsis Characterization of Compressive Damage Mechanisms in Ceramic and Polymeric Matrix Composite Materials by : James Lankford
Download or read book Characterization of Compressive Damage Mechanisms in Ceramic and Polymeric Matrix Composite Materials written by James Lankford and published by . This book was released on 1994 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization of Mechanical Damage Mechanisms in Ceramic Composite Materials by :
Download or read book Characterization of Mechanical Damage Mechanisms in Ceramic Composite Materials written by and published by . This book was released on 1988 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-strain rate compressive failure mechanisms in fiber-reinforced ceramic matrix composite materials have been characterized. These are contrasted with composite damage development at low-strain rates, and with the dynamic failure of monolithic ceramics. It is shown that it is possible to derive major strain-rate strengthening benefits if a major fraction of the fiber reinforcement is aligned with the load axis. This effect considerably exceeds the inertial microfracture strengthening observed in monolithic ceramics, and non-aligned composites. Its basis is shown to be the trans-specimen propagation time period for heterogeneously-nucleated, high-strain kink bands. A brief study on zirconia has focussed on the remarkable inverse strength-strain rate result previously observed for both fully and partially-stabilized zirconia single crystals, whereby the strength decreased with increasing strain rate. Based on the hypothesis that the suppression of microplastic flow, hence, local stress relaxation, might be responsible for this behavior, fully stabilized (i.e., non-transformable) specimens were strain-gaged and subjected to compressive microstrain. The rather stunning observation was that the crystals are highly microplastic, exhibiting plastic yield on loading and anelasticity and reverse plasticity upon unloading. These results clearly support the hypothesis that with increasing strain rate, microcracking is favored at the expense of microplasticity. Keywords: Compressive strength; Partially stabilized zirconia; Temperature effects; Composite materials; Fracture mechanisms; Ceramics; Plastic flow; Glass matrix ceramics; Cavitation. (sdw).
Book Synopsis Characterization of Mechanical Damage Mechanisms in Ceramic Composite Materials by :
Download or read book Characterization of Mechanical Damage Mechanisms in Ceramic Composite Materials written by and published by . This book was released on 1985 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization of Compressive Damage Mechanisms in Ceramic and Polymeric Matrix Composite Materials by :
Download or read book Characterization of Compressive Damage Mechanisms in Ceramic and Polymeric Matrix Composite Materials written by and published by . This book was released on 1995 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments involving expansion of the dynamic strain rate capabilities of the split Hopkinson pressure bar were performed. Unusually high strain rate hardening was obtained for the compressive failure of silicon nitride, while for silicon carbide, failure followed a lower rate of hardening, crack kinetics criterion. The silicon nitride results were interpreted in terms of plastic deformation, which changed the mode of failure from that observed at low strain rates, and altered the strength-strain rate dependency, apparently through the influence of dislocation generation upon microcrack nucleation. Recent experiments involved the response of monolithic ceramics and fiber-reinforced ceramic matrix composites to dynamic loading under hydrostatic confinement. Curious results were obtained for monolithic ceramics, which appeared to derive from crack initiation/growth kinetics and the stability of confined microcrack ensembles. Composites under confinement were found to reflect both dilatational and shear aspects of damage development, which are primarily a function of the matrix phase, while the effect of the fibers was to alter the relative kinetics and, under certain circumstances, the sequence of events involved in the macroscale growth of damage through the eventual zone of failure. Considerable effort has been devoted to new approaches to capturing the critical events associated with compressive kink band nucleation and development in polymeric matrix, fiber reinforced composites. jg.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ceramic Matrix Composites by : J. Paulo Davim
Download or read book Ceramic Matrix Composites written by J. Paulo Davim and published by Walter de Gruyter GmbH & Co KG. This book was released on 2016-06-20 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite materials are engineered from two or more constituents with significantly altered physical or chemical properties within the finished structure. Due to their special mechanical and physical properties they have the potential to replace conventional materials. This book, written by experts from all over the world, presents fundamentals and recent advances on ceramic matrix composites.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1993 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Failure Mode and Effects Analysis (FMEA) by :
Download or read book Failure Mode and Effects Analysis (FMEA) written by and published by . This book was released on 2000 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Materials Failure Analysis by : Abdel Salam Hamdy Makhlouf
Download or read book Handbook of Materials Failure Analysis written by Abdel Salam Hamdy Makhlouf and published by Butterworth-Heinemann. This book was released on 2019-10-22 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Materials Failure Analysis: With Case Studies from the Electronics Industries examines the reasons materials fail in certain situations, including material defects and mechanical failure as a result of various causes. The book begins with a general overview of materials failure analysis and its importance. It then proceeds to discussions on the types of failure analysis, specific tools and techniques, and an analysis of materials failure from various causes. As failure can occur for several reasons, including materials defects-related failure, materials design-related failure, or corrosion-related failures, the topics covered in this comprehensive source are an important tool for practitioners. Provides the most up-to-date and balanced coverage of failure analysis, combining foundational knowledge and current research on the latest developments and innovations in the field Offers an ideal accompaniment for those interested in materials forensic investigation, failure of materials, static failure analysis, dynamic failure analysis, and fatigue life prediction Presents compelling new case studies from key industries to demonstrate concepts
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1982 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Damage and Failure of Composite Materials by : R. Talreja
Download or read book Damage and Failure of Composite Materials written by R. Talreja and published by . This book was released on 2014-05-14 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding damage and failure of composite materials is critical for reliable and cost-effective engineering design. Bringing together materials mechanics and modeling, this book provides a complete guide to damage, fatigue and failure of composite materials. Early chapters focus on the underlying principles governing composite damage, reviewing basic equations and mechanics theory, before describing mechanisms of damage such as cracking, breakage and buckling. In subsequent chapters, the physical mechanisms underlying the formation and progression of damage under mechanical loads are described with ample experimental data, and micro- and macro-level damage models are combined. Finally, fatigue of composite materials is discussed using fatigue-life diagrams. While there is a special emphasis on polymer matrix composites, metal and ceramic matrix composites are also described. Outlining methods for more reliable design of composite structures, this is a valuable resource for engineers and materials scientists in industry and academia.
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1991 with total page 1646 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Book Synopsis Engineered Interfaces in Fiber Reinforced Composites by : Jang-Kyo Kim
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.
Book Synopsis Time-Dependent Mechanical Behavior of Ceramic-Matrix Composites at Elevated Temperatures by : Longbiao Li
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.
Book Synopsis Application of Fracture Mechanics to Composite Materials by : K. Friedrich
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.
