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Thermal Stress Effects In Intermetallic Matrix Composites
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781723457173 Total Pages :166 pages Book Rating :4.4/5 (571 download)
Book Synopsis Thermal Stress Effects in Intermetallic Matrix Composites by : National Aeronautics and Space Administration (NASA)
Download or read book Thermal Stress Effects in Intermetallic Matrix Composites written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-23 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intermetallic matrix composites develop residual stresses from the large thermal expansion mismatch (delta-alpha) between the fibers and matrix. This work was undertaken to: establish improved techniques to measure these thermal stresses in IMC's; determine residual stresses in a variety of IMC systems by experiments and modeling; and, determine the effect of residual stresses on selected mechanical properties of an IMC. X ray diffraction (XRD), neutron diffraction (ND), synchrotron XRD (SXRD), and ultrasonics (US) techniques for measuring thermal stresses in IMC were examined and ND was selected as the most promising technique. ND was demonstrated on a variety of IMC systems encompassing Ti- and Ni-base matrices, SiC, W, and Al2O3 fibers, and different fiber fractions (Vf). Experimental results on these systems agreed with predictions of a concentric cylinder model. In SiC/Ti-base systems, little yielding was found and stresses were controlled primarily by delta-alpha and Vf. In Ni-base matrix systems, yield strength of the matrix and Vf controlled stress levels. The longitudinal residual stresses in SCS-6/Ti-24Al-llNb composite were modified by thermomechanical processing. Increasing residual stress decreased ultimate tensile strength in agreement with model predictions. Fiber pushout strength showed an unexpected inverse correlation with residual stress. In-plane shear yield strength showed no dependence on residual stress. Higher levels of residual tension led to higher fatigue crack growth rates, as suggested by matrix mean stress effects. Wright, P. K. and Sensmeier, M. D. and Kupperman, D. S. and Wadley, H. N. G. Unspecified Center MECHANICAL PROPERTIES; METAL MATRIX COMPOSITES; MICROSTRUCTURE; NEUTRON DIFFRACTION; RESIDUAL STRESS; STRESS MEASUREMENT; THERMAL STRESSES; ULTRASONICS; X RAY DIFFRACTION; CONCENTRIC CYLINDERS; CRACK PROPAGATION; FATIGUE (MATERIALS); FIBER STRENGTH; FRACTURE STRENGTH; SHEAR STRENGTH; TENSILE STRENGTH; THERMAL EXPANSION; YIELD STREN...
Book Synopsis Thermal Stress Effects in Intermetallic Matrix Composites by :
Download or read book Thermal Stress Effects in Intermetallic Matrix Composites written by and published by . This book was released on 1993 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Intermetallic Matrix Composites by : Rahul Mitra
Download or read book Intermetallic Matrix Composites written by Rahul Mitra and published by Elsevier. This book was released on 2017-05-25 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intermetallic Matrix Composites: Properties and Applications is a comprehensive guide that studies the types and properties of intermetallic matrix composites, including their processing techniques, characterization and the various testing methods associated with these composites. In addition, it presents modeling techniques, their strengthening mechanisms and the important area of failure and repair. Advanced /complex IMCs are then explained, such as Self-healing IMCs and laminated intermetallic composites. The book concludes by delving into the industries that use these materials, including the automotive industry. - Reviews the latest research in intermetallic matrix composites - Contains a focus on properties and applications - Includes contributions from leading experts in the field
Book Synopsis Effects of Thermal Loading on Composites with Constituents of Differing Thermal Expansion by : Charles A. Hoffman
Download or read book Effects of Thermal Loading on Composites with Constituents of Differing Thermal Expansion written by Charles A. Hoffman and published by . This book was released on 1970 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Residual Stresses in Metal Matrix Composites by : Anders Ohlsson
Download or read book Thermal Residual Stresses in Metal Matrix Composites written by Anders Ohlsson and published by . This book was released on 1991 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Life Prediction Methodology for Titanium Matrix Composites by : W. Steven Johnson
Download or read book Life Prediction Methodology for Titanium Matrix Composites written by W. Steven Johnson and published by ASTM International. This book was released on 1996 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the March 1994 symposium are organized into five sections that progress from basic understanding of mechanical damage mechanisms and environmental effects to life prediction methodology. Five papers discuss the interplay between interfacial strength, residual thermal stresses, an
Book Synopsis Superelement Methods in High Temperature Metal Matrix Composites by : Daniel Trowbridge
Download or read book Superelement Methods in High Temperature Metal Matrix Composites written by Daniel Trowbridge and published by . This book was released on 1991 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications 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 NASA Technical Memorandum written by and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalogue, United States Public Documents by :
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1994 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metals Abstracts written by and published by . This book was released on 1995 with total page 1602 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Metal Matrix Composites by : Minoru Taya
Download or read book Metal Matrix Composites written by Minoru Taya and published by Elsevier. This book was released on 2016-01-11 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Matrix Composites: Thermomechanical Behavior discusses metal matrix composites, elaborating on that consists of two phases—fiber as reinforcement and metal as matrix. This book focuses on polymer matrix composites, including topics in metal matrix composites ranging from processing to fracture mechanics. The three basic types of composite materials—dispersion-strengthened, particle-reinforced, and fiber (whisker)-reinforced, are also described in detail. Dispersion-strengthened is characterized by a microstructure consisting of an elemental matrix within which fine particles are uniformly dispersed, while particle-reinforced is indicated by dispersed particles of greater than 1.0 μm diameter with a volume fraction of 5 to 40%. Fiber (whisker)-reinforced provides a distinguishing microstructural feature of fiber-reinforced materials, such as that the reinforcing fiber has one long dimension, while the reinforcing particles of the other two types do not. This publication serves as a reference data book to students and researchers aiming to acquire knowledge of the thermomechanical behavior of metal matrix composites.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1994 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Micromechanical Modeling of Process-Induced Residual Stresses in Ti-24Al-11Nb/SCS-6 Composite by : N. Chandra
Download or read book Micromechanical Modeling of Process-Induced Residual Stresses in Ti-24Al-11Nb/SCS-6 Composite written by N. Chandra and published by . This book was released on 1994 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: A crucial problem in the application of Metallic and Intermetallic Matrix Composites (MMCs and IMCs) is the presence of high levels of residual stresses induced during the fabrication process. This process-induced stress is essentially thermal in nature, and is caused by a significant difference in the coefficients of thermal expansion (CTE) of the fiber and the matrix and the large temperature differential of the cooling process. Residual stresses may lead to the development of matrix cracking, and may also have an adverse effect on the thermomechanical properties of the composites, e.g., stress-strain behavior, fracture toughness, fatigue, and creep. A micromechanical analysis is needed to study the effects of residual stresses, since phenomena like damage are local in nature even though they affect the macro properties. An elastic-plastic finite element analysis is performed to model the thermal stresses induced during fabrication of Ti-24Al-11Nb/SCS-6 unidirectional composite and the effect of these stresses on subsequent transverse loading. The state of residual stress induced in this intermetallic composite is found to be quite different from that in Ti-6Al-4V/SCS-6 metal matrix composite which is extensively discussed in the literature. The influence of fiber-matrix interfacial bonding and fiber arrangement on the thermomechanical behavior of Ti-24Al-11Nb/SCS-6 composite is also studied.
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Plasticity by : D. R. J. Owen
Download or read book Computational Plasticity written by D. R. J. Owen and published by . This book was released on 1992 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
