Affiliation of Author(s):民航学院
Journal:ADVANCES IN MECHANICAL ENGINEERING
Key Words:Ceramic-matrix composites thermomechanical fatigue damage evolution multiple loading sequences
Abstract:In this article, the thermomechanical fatigue damage evolution of fiber-reinforced ceramic-matrix composites subjected to multiple loading sequences is investigated. The damage evolution models considering synergistic coupling effects of thermomechanical fatigue loading sequences, thermal cyclic temperature, and multiple thermomechanical fatigue damage mechanisms (i.e. matrix multi-cracking, fiber/matrix interface debonding/sliding/wear) are developed. The effects of composite material properties, peak stress, and matrix crack spacing on the thermomechanical fatigue damage evolution of fiber-reinforced ceramic-matrix composites are discussed. Comparisons of damage evolution between the in-phase and the out-of-phase thermomechanical fatigue loading under multiple loading sequences are performed. The thermomechanical fatigue hysteresis energy, hysteresis modulus, peak strain, and interface debonded length of cross-ply ceramic-matrix composites subjected to different loading sequences are predicted. The damage under thermomechanical fatigue multiple loading sequences is much more serious than that under thermomechanical fatigue single peak stress level.
ISSN No.:1687-8132
Translation or Not:no
Date of Publication:2019-05-01
Correspondence Author:llb
Pre One:Damage development and lifetime prediction of fiber-reinforced ceramic-matrix composites subjected to cyclic loading at 1300 degrees C in vacuum, inert and oxidative atmospheres
Next One:Failure analysis of long-fiber-reinforced ceramic-matrix composites subjected to in-phase thermomechanical and isothermal cyclic loading
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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