Download or read book Fracture and Fatigue of SiC Fibre Reinforced Titanium Matrix Laminated Composites written by Figen Kaya and published by . This book was released on 1999 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fracture and Fatigue of Selectively Continuous Silicon Carbide Fibre Reinforced Titanium Metal Matrix Composites for Advanced Aerospace Applications written by Supachai Fakpiam and published by . This book was released on 2005 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue Damage Growth Mechanisms in Continuous Fiber Reinforced Titanium Matrix Composites written by and published by . This book was released on 1990 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue in SiC Fibre Reinforced Titanium Metal Matrix Composites written by Matthew Nicholas Dear and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Damage and Fracture of Ceramic Matrix Composites Under Stochastic Loading written by Longbiao Li and published by Springer Nature. This book was released on 2021-06-08 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the relationships between tensile damage and fracture, fatigue hysteresis loops, stress-rupture, fatigue life and fatigue limit stress, and stochastic loading stress. Ceramic-matrix composites (CMCs) possess low material density (i.e., only 1/4 - 1/3 of high-temperature alloy) and high-temperature resistance, which can reduce cooling air and improve structure efficiency. Understanding the failure mechanisms and internal damage evolution represents an important step to ensure reliability and safety of CMCs. This book investigates damage and fracture of fiber-reinforced ceramic-matrix composites (CMCs) subjected to stochastic loading, including: (1) tensile damage and fracture of fiber-reinforced CMCs subjected to stochastic loading; (2) fatigue hysteresis loops of fiber-reinforced CMCs subjected to stochastic loading; (3) stress rupture of fiber-reinforced CMCs with stochastic loading at intermediate temperature; (4) fatigue life prediction of fiber-reinforced CMCs subjected to stochastic overloading stress at elevated temperature; and (5) fatigue limit stress prediction of fiber-reinforced CMCs with stochastic loading. This book helps the material scientists and engineering designers to understand and master the damage and fracture of ceramic-matrix composites under stochastic loading.
Download or read book Metal Matrix Composites written by International Conference on Composite Materials and published by Woodhead Publishing. This book was released on 1993 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metal and Ceramic Based Composites written by S.T. Mileiko and published by Elsevier. This book was released on 1997-12-12 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern scientific and technological fields are frequently of an interdisciplinary nature, and the field of fibrous composites is no exception. Unlike fibre-reinforced plastics, the family of metal- and ceramic-based composites is still quite a new group of materials with a large variety of mechanical and physical properties. Up until now it has been difficult to produce these materials as the necessary technical information has not been well documented.The main purpose of this book is to link together fabrication, structure and properties chains, so as to clarify which structure provides the necessary properties, and how one can attain the correct composite structure. To this end, the book not only contains topics of a purely technical nature, but also a description of the failure mechanics of metal- and ceramic-matrix composites, as this is the key to understanding the structure-properties segment of the chain mentioned.The book is divided into three parts. Part I presents a general view of composites with the accent on metal- and ceramic-matrix composites. It also contains a brief description of modern fibres and composites and can be considered, at least for beginners, as a starting point for further study. Part II looks at the composite microstructures considered to be either optimal or reasonable in resisting a particular loading. Finally Part II describes a variety of mechanical, physical, and chemical potential for organizing these microstructures. Experimental data on technologies, material structures, and material properties are used throughout the book to support theoretical conclusions or to obtain important physical parameters.
Download or read book Fatigue of Composite Materials written by K. L. Reifsnider and published by Elsevier Publishing Company. This book was released on 1991 with total page 542 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).
Download or read book Fatigue Damage Mechanisms of a Continuous Silicon Carbide SiC Fiber Reinforced Titanium Matrix Composite written by Ochang Jin and published by . This book was released on 1998 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue Damage Evolution and Degradation of Mechanical Properties in Silicon Carbide SiC Fiber Reinforced Titanium Matrix Composites written by SM. Jeng and published by . This book was released on 1996 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue damage accumulation and failure modes of several unidirectional and angle-ply SCS-6 fiber-reinforced titanium matrix composites are reviewed. The fatigue damage characteristics of the notched and unnotched composites were classified using several schematic diagrams based upon the constituent's properties and loading conditions. Quantitative relationships between the microstructural damage and stiffness reduction were also established. A shear-lag model incorporating a damage function (which involved the cracking density and length, fiber/matrix frictional stress, and debonding length) was also used to predict residual stiffness of the composites.
Download or read book Damage Fracture and Fatigue of Ceramic Matrix Composites written by Longbiao Li and published by Springer. This book was released on 2018-08-27 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the damage, fracture and fatigue of ceramic-matrix composites. It investigates tensile damage and fracture, fatigue hysteresis, and the properties of interfaces subjected to cyclic fatigue loading. Further, it predicts fatigue life at room and elevated temperatures using newly developed damage models and methods, and it analyzes and compares damage, fracture and fatigue behavior of different fiber performs: unidirectional, cross-ply, 2D and 2.5D woven. The developed models and methods can be used to predict the damage and lifetime of ceramic-matrix composites during applications on hot section components.Ceramic-matrix composites (CMCs) are high-temperature structural materials with the significant advantages of high specific strength, high specific modulus, high temperature resistance and good thermal stability, which play a crucial role in the development of high thrust weight ratio aero engines. The critical nature of the application of these advanced materials makes comprehensive characterization a necessity, and as such this book provides designers with essential information pertaining not only to the strength of the materials, but also to their fatigue and damage characteristics.
Download or read book Fatigue Testing and Damage Development in Continuous Fiber Reinforced Metal Matrix Composites written by W. S. Johnson and published by . This book was released on 1988 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crack Propagation and Fracture Resistance Behavior Under Fatigue Loading of a Ceramic Matrix Composite written by Dipankar Ghosh and published by . This book was released on 2001 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objectives of this research are fabrication of a tough fiber reinforced ceramic composite, study of the fracture resistance behavior (R - curve) under fatigue loading, and in situ study of the crack propagation under fatigue conditions both at room and elevated temperatures. Silicon carbide fiber (SCS-6) reinforced zircon (ZrSiO 4) matrix composites are used in this study. The composite is fabricated by uniaxially aligning SiC fibers into a perform and then incorporating the zircon matrix by a tape casting and lamination technique. The green body is then consolidated by hot pressing at about 1640C in a flowing nitrogen atmosphere. Thus, dense composites with uniform fiber distribution and good mechanical properties are fabricated. A novel in situ technique is used to study the crack propagation in the matrix of the composite under fatigue conditions. In situ crack propagation and fracture resistance behavior (R - curve) of these ceramic composite samples are studied both experimentally and numerically under fatigue load conditions between room temperature and 1400ʻC. The stress intensity value at crack initiation decreased with increasing temperature. The fracture resistance results showed a rising R - curve behavior with a decreasing value of the fracture resistance at elevated temperatures. In other words the slope of the R curve decreased as temperature increased, and this effect is very dramatic at 1400ʻC. Numerical analyses/iterations, based on the currently available micromechanical models, are done to determine the relationship between the bridging stress function and the R - curve behavior of the composite. Also, the effect of residual stress and constituent properties like fiber strength, interfacial shear stress etc., on the bridging stress function is also systematically studied both at room and elevated temperature. Fiber strength, Weibull modulus, and interfacial shear stress are found to have a significant effect on the bridging stress functions. Among the three parameters, fiber strength has the most dominant effect on the bridging stress functions. A comparison of the experimental and numerically calculated results on fracture behavior showed that numerical calculations matched reasonably well with the experimental R curve values over the temperature range of 20 - 1400ʻC.
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.
Download or read book Fiber Volume Fraction Effects on Fatigue Response of a SCS 6 Ti 15 3 Metal Matrix Composite at Elevated Temperature written by Sean C. Coghlan and published by . This book was released on 1997-09-01 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to determine the effects of fiber volume fraction on the fatigue behavior of Silicon Carbide fiber-reinforced Titanium alloy, SCS-6/Ti-15-3. Three fiber volume fractions were investigated; 15%, 25%, and 42%. The tests were performed under fully-reversed, strain- controlled conditions at 427 C. The primary objectives of this study were to develop a fatigue life diagram and to document the damage and failure mechanisms. Compressive loads on the slender specimens were kept from buckling the specimens through the use of a buckling guide. This device allows unrestricted axial movement of the composite, while preventing any out-of-plane motion. No buckling damage due to compression was found in any of the specimens. Modulus behavior and stress versus strain curves were recorded during cycling for each test. An applied strain range between 0.5% and 1.1% was used for the majority of the tests. This resulted in fatigue lives between approximately 10, 000 and 100,000 cycles. The resulting fatigue life diagram showed similar life at strain ranges at and above 0.008 mm/mm for all fiber volume fractions. At strain levels below 0.008 mm/mm, there was an increasing fatigue life with increasing fiber volume fraction. The 15% and 42% V sub f material was consolidated with a molybdenum cross-weave to hold the fibers in alignment. The 25% V sub f material had a titanium-niobium cross-weave for the same purpose. The Mo cross-weave was present on every fracture surface of the 15% and 42% V sub f material. This indicated that it was detrimental to the fatigue life of the composite. No cross-weave material was found on the fracture surfaces of the 25% V sub f. Major cause of specimen failure was the initiation and propagation of fatigue cracks in the matrix that were perpendicular to the applied load.
Download or read book Durability and Damage Tolerance of High Temperature Advanced Titanium Metal 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: The bridging fatigue crack growth damage mechanisms in a unidirectional SiC/Ti MMC include matrix cracking, fiber/matrix interface debonding and sliding along bridging fibers and fracture of these fibers. The basic components of these mechanisms are examined in this program. The evolution features of residual stresses indicated that stress relaxation occurred in the Ti matrix phase of the composite following post-fabrication cool down to 600 00. Parametric study of the SiC fiber coating materials showed that the effective residual stress component has an inverse relationship with the thickness of the fiber reaction zone. The debonding shear strength of the composite is determined by the localized shear stress distribution along the fiber/matrix interface at the onset of debonding. An interphase debonding model, which combine fracture mechanics with FE results on interphase shear stress and bridging fiber traction range, is proposed to establish a distribution of debonding lengths along a fiber-bridged matrix crack length as a function of temperature. The driving force for the interface debond crack, however, has an inverse relationship with the test temperature. The concurrent damage events of fiber stress evolution and continuous fiber strength degradation were postulated into a fiber fracture criterion to describe the fracture process of a bridging fiber. Furthermore, the fiber crack density has been correlated with the density of crack initiation sites observed in the interphase region along the reinforcing fibers in a SCS-6/Ti-21S composite.
Download or read book Titanium Matrix Composites written by Shankar Mall and published by CRC Press. This book was released on 2020-01-29 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review and summary of advancements related to mechanical behavior and related mechanics issues of titanium matrix composites (TMCs), a class of high-temperature materials useful in the propulsion and airframe components in advanced aerospace systems. After an introduction to TMCs, different authors review and summarise the advancements related to mechanical behavior and related mechanics issues of TMCs.
