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Author : Louis J. Ghosn
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (128 download)
Download or read book Fatigue Crack Growth in Unidirectional Metal Matrix Composite written by Louis J. Ghosn and published by . This book was released on 1990 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ronald B. Bucinell
Publisher : ASTM International
ISBN 13 : 0803126093
Total Pages : 315 pages
Book Rating : 4.8/5 (31 download)
Download or read book Composite Materials written by Ronald B. Bucinell and published by ASTM International. This book was released on 1998 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 58 pages
Book Rating : 4.:/5 (317 download)
Download or read book Application of Fiber Bridging Models to Fatigue Crack Growth in Unidirectional Titanium Matrix Composites written by and published by . This book was released on 1992 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722241032
Total Pages : 56 pages
Book Rating : 4.2/5 (41 download)
Download or read book Application of Fiber Bridging Models to Fatigue Crack Growth in Unidirectional Titanium Matrix Composites written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-06 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several fiber bridging models were reviewed and applied to study the matrix fatigue crack growth behavior in center notched (0)(sub 8) SCS-6/Ti-15-3 and (0)(sub 4) SCS-6/Ti-6Al-4V laminates. Observations revealed that fatigue damage consisted primarily of matrix cracks and fiber matrix interfacial failure in the (0)(sub 8) SCS-6/Ti-15-3 laminates. Fiber-matrix interface failure included fracture of the brittle reaction zone and cracking between the two carbon rich fiber coatings. Intact fibers in the wake of the matrix cracks reduce the stress intensity factor range. Thus, an applied stress intensity factor range is inappropriate to characterize matrix crack growth behavior. Fiber bridging models were used to determine the matrix stress intensity factor range in titanium metal matrix composites. In these models, the fibers in the wake of the crack are idealized as a closure pressure. An unknown constant frictional shear stress is assumed to act along the debond or slip length of the bridging fibers. The frictional shear stress was used as a curve fitting parameter to available data (crack growth data, crack opening displacement data, and debond length data). Large variations in the frictional shear stress required to fit the experimental data indicate that the fiber bridging models in their present form lack predictive capabilities. However, these models provide an efficient and relatively simple engineering method for conducting parametric studies of the matrix growth behavior based on constituent properties. Bakuckas, J. G., Jr. and Johnson, W. S. Langley Research Center...
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722380403
Total Pages : 24 pages
Book Rating : 4.3/5 (84 download)
Download or read book Modeling of Crack Bridging in a Unidirectional Metal Matrix Composite written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-05 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effective fatigue crack driving force and crack opening profiles were determined analytically for fatigue tested unidirectional composite specimens exhibiting fiber bridging. The crack closure pressure due to bridging was modeled using two approaches; the fiber pressure model and the shear lag model. For both closure models, the Bueckner weight function method and the finite element method were used to calculate crack opening displacements and the crack driving force. The predicted near crack tip opening profile agreed well with the experimentally measured profiles for single edge notch SCS-6/Ti-15-3 metal matrix composite specimens. The numerically determined effective crack driving force, Delta K(sup eff), was calculated using both models to correlate the measure crack growth rate in the composite. The calculated Delta K(sup eff) from both models accounted for the crack bridging by showing a good agreement between the measured fatigue crack growth rates of the bridged composite and that of unreinforced, unbridged titanium matrix alloy specimens. Ghosn, Louis J. and Kantzos, Pete and Telesman, Jack Glenn Research Center RTOP 510-01-50...
Author :
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (317 download)
Download or read book Modeling of Crack Bridging in a Unidirectional Metal Matrix Composite written by and published by . This book was released on 1991 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lawrence J. Broutman
Publisher : Elsevier
ISBN 13 : 1483216713
Total Pages : 485 pages
Book Rating : 4.4/5 (832 download)
Download or read book Fracture and Fatigue written by Lawrence J. Broutman and published by Elsevier. This book was released on 2016-06-15 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite Materials, Volume 5: Fracture and Fatigue covers the concepts, theories, and experiments on fracture and fatigue behavior of composite materials. The book discusses the fracture of particulate composites, including metal, polymer, and ceramic matrices; relates micromechanics effects to composite strength; and summarizes the various theories relating constituent properties and microstructure to fracture. The text also describes differing theories regarding the strength and fracture of composites; and the theory and experiment relating to time-dependent fracture covering both long-term as well as dynamic fracture. The fatigue of both polymer- and metal-matrix composites and the factors influencing the toughness of both brittle and ductile matrix composites are also considered. Design engineers, materials scientist, materials engineers, and metallurgists will find the book useful.
Author : Mark Ovinis
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (96 download)
Download or read book Fatigue Crack Growth Behavior of a Unidirectional Polymer Matrix Composite written by Mark Ovinis and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Erian A. Armanios
Publisher : ASTM International
ISBN 13 : 0803124112
Total Pages : 570 pages
Book Rating : 4.8/5 (31 download)
Download or read book Composite Materials written by Erian A. Armanios and published by ASTM International. This book was released on 1997 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. Ghonem
Publisher :
ISBN 13 :
Total Pages : 27 pages
Book Rating : 4.:/5 (125 download)
Download or read book High Temperature/High Frequency Fatigue Crack Growth in Titanium Metal Matrix Composites written by H. Ghonem and published by . This book was released on 1996 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study was conducted to examine the effects of high temperature/high frequency loading on the crack growth behavior in titanium composites. Fatigue crack growth tests were performed on the unidirectional SM 1240/TIMETAL-21S composite in air environment at three different temperatures: 24, 500, and 650?gC with a loading frequency of 10 Hz and a stress ratio of 0.1. Tests were also carried out in vacuum and on aged specimens. In all the tests, the crack length was measured continuously while the crack opening displacement (COD) was measured at discrete positions along the crack length. Results show that, at all temperatures, the crack progresses in two sequential stages; a stage in which the crack growth rate decreases as the crack length increases followed by a stage characterized by an accelerated crack growth rate. The first stage corresponds to a crack-bridging condition and is the focus of the analysis in this paper. In additional to COD measurements, the microstructural features associated with the fracture process during this stage was examined by scanning electron microscopy with emphasis being placed on the matrix crack morphology, debonding location, temperature, and environmental influences on the fiber coatings. An analytical procedure, employing concepts of the theory of fracture mechanics and micromechanics analysis of the stress state along bridging fibers, was applied in order to calculate the fiber-bridging stress, the frictional shear stress, and the effective stress intensity factor. Results of this work suggest that the fiber-bridging stress and the frictional shear stress are variables along the crack length and are test temperature dependents. Furthermore, it was concluded that both the crack-tip opening displacement and the effective stress intensity factor can be used as measurements of the crack-tip driving force in the crack-bridging stage. Based on the experimental and analytical results collected in this study, a bridging damage mechanism under the loading condition specified here is suggested. This mechanism argues that the effect of temperature on the high frequency crack growth process is established through the temperature-related modification of the frictional shear stress and the resulting adjustment of the internal stress state in the debonded regions of the bridging fibers.
Author : K.L. Reifsnider
Publisher : Elsevier
ISBN 13 : 0444597182
Total Pages : 532 pages
Book Rating : 4.4/5 (445 download)
Download or read book Fatigue of Composite Materials written by K.L. Reifsnider and published by Elsevier. This book was released on 2012-12-02 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the first comprehensive review of its kind on the long-term behaviour of composite materials and structures subjected to time variable mechanical, thermal, and chemical influences, a subject of critical importance to the design, development, and certification of high performance engineering structures. Specific topics examined include damage, damage characterization, and damage mechanics; fatigue testing and evaluation; fatigue behaviour of short and long fibre reinforced polymer and metal matrix materials; viscoelastic and moisture effects; delamination; statistical considerations; the modeling of cumulative damage development; and life prediction. The volume provides an extensive presentation of data, discussions, and comparisons on the behaviour of the major types of material systems in current use, as well as extensive analysis and modeling (including the first presentation of work not found elsewhere). The book will be of special interest to engineers concerned with reliability, maintainability, safety, certification, and damage tolerance; to materials developers concerned with making materials for long-term service, especially under severe loads and environments, and to lecturers, students, and researchers involved in material system design, performance, solid mechanics, fatigue, durability, and composite materials. The scope of the work extends from entry level material to the frontiers of the subject.
Author : SM. Jeng
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (125 download)
Download or read book Fatigue Cracking of Fiber-Reinforced Titanium Matrix Composites written by SM. Jeng and published by . This book was released on 1993 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fatigue crack growth behavior of a unidirectional SCS-6-fiber-reinforced Ti-6Al-2Sn-4Zr-2Mo composite has been characterized. A fatigue cracking map for several unidirectional SCS-6-fiber-reinforced titanium and titanium aluminide composites under tension-tension fatigue loading has been developed. The map is constructed based upon the fiber strength to interfacial shear strength ratio versus the applied maximum stress intensity factor. Also, the effect of fiber bridging on the effective crack driving force in the matrix is analyzed using the shear-lag model and finite element analysis.
Author :
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (227 download)
Download or read book Fracture Micromechanics of Continuous Fiber and Textile Reinforced Metal and Ceramic Matrix Composites written by and published by . This book was released on 1994 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes progress on fatigue crack growth through unidirectional SCS-6/titanium alloy composites and the fatigue and fracture of ceramic matrix composites reinforced with continuous fibers, both large and small, in unidirectional and woven forms. The fiber/matrix interaction is detailed for SCS-6/titanium alloy composites near stress concentrations, and it is shown how that is similar to measurements of fiber stress in the wake of fatigue cracks. The main theme of the work on ceramic matrix composites is the effect of fiber architecture on fatigue behavior. Metal matrix composites, Ceramic matrix composites, Continuous fiber reinforcement, Fatigue crack growth, Crack growth mechanisms, Woven fiber reinforcement.
Author : J. R. Hancock
Publisher : ASTM International
ISBN 13 : 9780803103467
Total Pages : 350 pages
Book Rating : 4.1/5 (34 download)
Download or read book Fatigue of Composite Materials written by J. R. Hancock and published by ASTM International. This book was released on 1975 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. Thomas Hahn
Publisher : ASTM International
ISBN 13 : 0803111908
Total Pages : 421 pages
Book Rating : 4.8/5 (31 download)
Download or read book Composite Materials written by H. Thomas Hahn and published by ASTM International. This book was released on 1989 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Proceedings of a symposium on [title] held April 1987, Cincinnati, OH. The majority of papers deal with composite systems of thermosetting epoxies. Some attention is given to more recent thermoplastic systems. Annotation copyrighted by Book News, Inc., Portland, OR.
Author : Minoru Taya
Publisher : Elsevier
ISBN 13 : 1483191133
Total Pages : 275 pages
Book Rating : 4.4/5 (831 download)
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.
Author :
Publisher :
ISBN 13 :
Total Pages : 852 pages
Book Rating : 4.3/5 (129 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
