Damage evolution of carbon fiber-reinforced ceramic-matrix composites with different fiber preforms using the fatigue hysteresis loop area
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所属单位：民航学院
发表刊物：TEXTILE RESEARCH JOURNAL
关键字：ceramic-matrix composites fatigue hysteresis interfaces composites performance properties
摘要：The damage evolution of C/SiC ceramic-matrix composites with different fiber preforms, that is, unidirectional, cross-ply and 2.5D woven, under cyclic fatigue loading at room and elevated temperatures in air and inert atmosphere has been investigated. The experimental fatigue hysteresis modulus and hysteresis loop area versus cycle numbers have been analyzed. The relationships between the fatigue hysteresis loop area, interface slip and interface shear stress have been established. The evolution of the fatigue hysteresis loop area and interface shear stress as a function of applied cycles has been analyzed for different peak stresses, fiber preforms and test conditions. For different fiber preforms and test conditions, the fatigue hysteresis loop area degrades the fastest for unidirectional C/SiC at 800? in air, and the slowest for 2.5D C/SiC at 600? in an inert atmosphere, due to the different degradation rates of interface shear stress.
ISSN号：0040-5175
是否译文：否
发表时间：2018-03-01
通讯作者：李龙彪
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