Mechanical hysteresis and damage evolution in C/SiC composites under fatigue loading at room and elevated temperatures

被引：13

作者：

Li, Longbiao ^{[1
]}

Reynaud, Pascal ^{[2
]}

Fantozzi, Gilbert ^{[2
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Civil Aviat, 29 Yudao St, Nanjing 210016, Jiangsu, Peoples R China

[2] Univ Lyon, INSA Lyon, MATEIS UMR CNRS 5510, Villeurbanne, France

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2019年 / 16卷 / 06期

关键词：

ceramic matrix composites (CMCs); fatigue; hysteresis loops; interface debonding; interface shear stress; matrix cracking; CERAMIC-MATRIX COMPOSITES; LIFE PREDICTION; CONSTITUENT PROPERTIES; MULTIPLE CRACKING; TENSILE BEHAVIOR; CYCLIC FATIGUE; FREQUENCY; TIME; PARAMETER; LOOPS;

D O I：

10.1111/ijac.13300

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, the mechanical hysteresis and damage evolution in C/SiC ceramic matrix composites (CMCs) under cyclic tension-tension fatigue loading at room and elevated temperatures in air and in inert atmosphere and different loading frequencies are investigated. The fatigue hysteresis loops models considering multiple matrix cracking modes are developed to establish the relationships between fatigue hysteresis loops, fatigue hysteresis dissipated energy, and fiber/matrix interface shear stress. The evolution of fatigue hysteresis dissipated energy and interface shear stress vs applied cycles is analyzed. It was found that the interface shear stress degradation rate increases with fatigue peak stress, and loading frequency from 40 to 375 Hz.

引用

页码：2214 / 2228

页数：15

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