Modeling of the Thermomechanical Fatigue Behavior of Fiber-Reinforced Ceramic-Matrix Composites Subjected to Different Phase Angles
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所属单位：民航学院
发表刊物：JOURNAL OF AEROSPACE ENGINEERING
关键字：Ceramic-matrix composites (CMCs) Airworthiness Thermomechanical fatigue Damage accumulation Phase angle
摘要：Under thermomechanical fatigue (TMF) loading, the thermal cyclic temperature may change with decreasing or increasing applied stress upon unloading or reloading. The damage inside of fiber-reinforced ceramic-matrix composites (CMCs) is affected by the phase angle. In this paper, the thermomechanical fatigue behavior of fiber-reinforced CMCs corresponding to different phase angles of =0, /3, /2, and has been investigated. The damage accumulation processes considered the coupling effects of the temperature changing with applied stress in each applied cycle and the degradation of fiber/matrix interface shear stress with increasing applied cycles. The relationships between the thermomechanical fatigue damage mechanisms, hysteresis parameters (i.e.,hysteresis energy and peak strain), phase angle, and interface damage condition have been established. The thermomechanical fatigue behavior for different fiber volume content, peak stress, and matrix crack spacing have been analyzed for different phase angles. The damage accumulation of cross-ply SiC/magnesium aluminosilicate (MAS) composite under thermomechanical fatigue loading have been predicted for different phase angles of =0 and .
ISSN号：0893-1321
是否译文：否
发表时间：2018-07-01
通讯作者：李龙彪
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