Micromechanical life prediction method of fiber-reinforced ceramic-matrix composites subjected to stochastic overloading at room temperature

被引：1

作者：

Li, Longbiao ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Civil Aviat, 29 Jiangjun Ave, Nanjing 211106, Peoples R China

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS | 2021年 / 235卷 / 10期

关键词：

Ceramic-matrix composites; stochastic overloading; fatigue life; matrix cracking; interface debonding; fibers failure; 800; DEGREES-C; MECHANICAL-PROPERTIES; FATIGUE BEHAVIOR; EVOLUTION; MODEL;

D O I：

10.1177/14644207211008574

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, a micromechanical fatigue life prediction method for fiber-reinforced ceramic-matrix composites subjected to stochastic overloading at room temperature is developed. Fatigue damage mechanisms in the matrix, interfaces, and fibers are characterized using different damage models. Relationships between the fatigue life and related degradation rate, stochastic overloading stress, and breakage of intact fibers are established. Experimental fatigue life of different C/SiC composites subjected to different stochastic overloading is predicted. For the same stochastic overloading condition, the degradation rate of fatigue life is the highest for cross-ply C/SiC composite, and the lowest for 2.5D C/SiC composite.

引用

页码：2368 / 2381

页数：14

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