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Characterization Of Critical Fundamental Aging Mechanisms Of High Temperature Polymer Matrix Composites
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Book Synopsis Characterization of Critical Fundamental Aging Mechanisms of High Temperature Polymer Matrix Composites by :
Download or read book Characterization of Critical Fundamental Aging Mechanisms of High Temperature Polymer Matrix Composites written by and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This program investigated durability and potential critical fundamental aging mechanisms of the high temperature polymer matrix carbon fiber composites, especially crosslinked bismaleimide(BMI) thermosets and thermoplastic polyimide(PI) for the future applications in commercial and military aircraft. The studies involved combined stress, temperature, thermal cycling or thermal spike, moisture, time and oxygen service environment exposure which could lead to complex synergistic environmental-induced degradation mechanisms of composite performance and their critical physical and chemical aging mechanisms in terms of damage initiation and propagation on the molecular, microscopic and macroscopic structural levels in order to develop structural-performance phase diagrams for mechanics model-structural design analyses and associated materials structural optimization at all dimensional levels. Extensive and systematic studies involved two fundamental aging mechanisms, namely (i) the characterization of cure of BMI
Book Synopsis Characterization of Aging, Deformation and Failure of High Temperature Polymer Composites by : Zuo Sun
Download or read book Characterization of Aging, Deformation and Failure of High Temperature Polymer Composites written by Zuo Sun and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: High temperature polymer composites are widely used in high speed transport airframe structures and aircraft engine components due to their high strength, high stiffness, high temperature tolerance and light weight properties. One critical issue for structural designers and material developers is long term behavior of advanced polymer matrix composite (PMC) and their associated damage and failure mechanisms. This research work focuses on physical aging, deformation and failure of high temperature PMC's, which may all play important roles in determining long term behavior.
Book Synopsis Techniques to Evaluate Long-Term Aging of Systems by : Paul Wagner
Download or read book Techniques to Evaluate Long-Term Aging of Systems written by Paul Wagner and published by RIAC. This book was released on 2011-03 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this report is to highlight the impact of long-term aging effects on parts, assemblies and equipments by investigating characteristics of aging as they impact specific material classes.
Book Synopsis American Society of Composites, Tenth Technology Proceedings by : Amer Society Composi
Download or read book American Society of Composites, Tenth Technology Proceedings written by Amer Society Composi and published by CRC Press. This book was released on 1995-10-17 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conference proceedings from the American Society of Composites, Tenth Technology Proceedings: Composite Materials, Mechanics and Processing on October 18-20, 1995 at the Miramar Sheraton Hotel Santa Monica, California
Author :American Society of Mechanical Engineers. Materials Division Publisher : ISBN 13 :9780791817599 Total Pages :856 pages Book Rating :4.8/5 (175 download)
Book Synopsis Proceedings of the ASME Materials Division by : American Society of Mechanical Engineers. Materials Division
Download or read book Proceedings of the ASME Materials Division written by American Society of Mechanical Engineers. Materials Division and published by . This book was released on 1995 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Constitutive Behavior and Damage Characterization of High Temperature Polymer Composites by :
Download or read book Constitutive Behavior and Damage Characterization of High Temperature Polymer Composites written by and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this investigation was to characterize the constitutive behavior, physical aging, damage mechanisms and damage development in high temperature polymer matrix composites under various environmental and loading conditions. The aging induced volumetric shrinkage was measured and a model was proposed capable of predicting aging under any temperature history. In the case of monotonically loaded laminates a unique and simple general relationship was developed between applied load and crack density independent of lamination geometry and temperature and accounting for statistical variability. Under fatigue conditions a master curve was developed relating damage (crack density) and fatigue cycles, independent of layup and temperature.
Book Synopsis American Sociey of Composties, Fifteenth International Conference by : Amer Society Composi
Download or read book American Sociey of Composties, Fifteenth International Conference written by Amer Society Composi and published by CRC Press. This book was released on 2000-09-26 with total page 1258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bridging the Centuries with SAMPE's Materials and Processes Technology by : Steve Loud
Download or read book Bridging the Centuries with SAMPE's Materials and Processes Technology written by Steve Loud and published by Taylor & Francis. This book was released on 2000 with total page 2381 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Advanced Materials written by and published by . This book was released on 2000 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the ASME Materials Division by :
Download or read book Proceedings of the ASME Materials Division written by and published by . This book was released on 1995 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Temperature Polymer Matrix Composites by : Tito T. Serafini
Download or read book High Temperature Polymer Matrix Composites written by Tito T. Serafini and published by William Andrew. This book was released on 1987 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Accelerated Aging of Materials and Structures by : National Research Council (U.S.)
Download or read book Accelerated Aging of Materials and Structures written by National Research Council (U.S.) and published by . This book was released on 1996 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium Degradation MechanismsSUPERALLOYS; Microstructural Changes; Deformation and Damage Accumulation; Oxidation; POLYMER-MATRIX COMPOSITES; Microstructural Changes; Damage Accumulation: Matrix Cracking; Environmental Effects; Thermal Degradation and Oxidation; Hygrothermal Effects; Summary: Polymer-Matrix Composite Degradation Mechanisms; CERAMIC-MATRIX COMPOSITES; Thermochemical Degradation; Mechanical Degradation: Effects of Corrosive Reactions; Summary: Ceramic-Matrix Composite Degradation Mechanisms; RECOMMENDATION; 5 Accelerated Methods for Characterization of Aging Response.
Book Synopsis High Temperature Degradation Mechanisms in Polymer Matrix Composites by : Ronan Anthony Cunningham
Download or read book High Temperature Degradation Mechanisms in Polymer Matrix Composites written by Ronan Anthony Cunningham and published by . This book was released on 1996 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer matrix composites are increasingly used in demanding structural applications in which they may be exposed to harsh environments. The durability of such materials is a major concern, potentially limiting both the integrity of the structures and their useful lifetimes. The goal of the current investigation is to develop a mechanism-based model of the chemical degradation which occurs, such that given the external chemical environment and temperatures throughout the laminate, laminate geometry, and ply and/or constituent material properties, we can calculate the concentration of diffusing substances and extent of chemical degradation as functions of time and position throughout the laminate. This objective is met through the development and use of analytical models, coupled to an analysis-driven experimental program which offers both quantitative and qualitative information on the degradation mechanism. Preliminary analyses using a coupled diffusion/reaction model are used to gain insight into the physics of the degradation mechanisms and to identify crucial material parameters. An experimental program is defined based on the results of the preliminary analysis which allows the determination of the necessary material coefficients. Thermogravimetric analyses are carried out in nitrogen, air, and oxygen to provide quantitative information on thermal and oxidative reactions. Powdered samples are used to eliminate diffusion effects. Tests in both inert and oxidative environments allow the separation of thermal and oxidative contributions to specimen mass loss. The concentration dependency of the oxidative reactions is determined from the tests in pure oxygen. Short term isothermal tests at different temperatures are carried out on neat resin and unidirectional macroscopic specimens to identify diffusion effects. Mass loss, specimen shrinkage, the formation of degraded surface layers and surface cracking are recorded as functions of exposure time. Geometry effects in the neat resin, and anisotropic diffusion effects in the composites, are identified through the use of specimens with different aspect ratios. The data is used with the model to determine reaction coefficients and effective diffusion coefficients. The empirical and analytical correlations confirm the preliminary model results which suggest that mass loss at lower temperatures is dominated by oxidative reactions and that these reaction are limited by diffusion of oxygen from the surface. The mechanism-based model is able to successfully capture the basic physics of the degradation phenomena under a wide range of test conditions. The analysis-based test design is successful in separating out oxidative, thermal, and diffusion effects to allow the determination of material coefficients. This success confirms the basic picture of the process; however, a more complete understanding of some aspects of the physics are required before truly predictive capability can be achieved.
Book Synopsis Structure-property-processing Relationships and the Effects of Physical Structure on the Hygrothermal Durability and Mechanical Response of Polyimides by : Jason E. Lincoln
Download or read book Structure-property-processing Relationships and the Effects of Physical Structure on the Hygrothermal Durability and Mechanical Response of Polyimides written by Jason E. Lincoln and published by . This book was released on 2001 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seventy-five Years of the ASME Materials Division by : American Society of Mechanical Engineers. Materials Division
Download or read book Seventy-five Years of the ASME Materials Division written by American Society of Mechanical Engineers. Materials Division and published by . This book was released on 1995 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research in Progress written by and published by . This book was released on 1978 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On the Use of Accelerated Test Methods for Characterization of Advanced Composite Materials by : Thomas S. Gates
Download or read book On the Use of Accelerated Test Methods for Characterization of Advanced Composite Materials written by Thomas S. Gates and published by . This book was released on 2003 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: