Affiliation of Author(s):民航学院
Journal:TEXTILE RESEARCH JOURNAL
Key Words:ceramic-matrix composites fatigue hysteresis interfaces composites performance properties
Abstract: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 No.:0040-5175
Translation or Not:no
Date of Publication:2018-03-01
Correspondence Author:llb
Pre One:Modeling Strength Degradation of Fiber-Reinforced Ceramic-Matrix Composites Subjected to Cyclic Loading at Elevated Temperatures in Oxidative Environments
Next One:Damage evolution and life prediction of different 2D woven ceramic-matrix composites at room and elevated temperatures based on hysteresis loops
Lecturer
Education Level:南京航空航天大学
Degree:Doctoral Degree in Engineering
School/Department:College of Civil Aviation
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