A residual strength model for the fatigue strengthening behavior of 2D needled CMCs

被引：18

作者：

Fang, Guangwu ^{[1
]}

Gao, Xiguang ^{[1
]}

Zhang, Sheng ^{[1
]}

Xue, Jiangang ^{[1
]}

Song, Yingdong ^{[1
,2
]}

Wang, Fang ^{[3
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, JiangSu Prov Key Lab Aerosp Power Syst, Coll Energy & Power Engn, Nanjing, Jiangsu, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing, Jiangsu, Peoples R China

[3] Nanjing Forestry Univ, Coll Chem Engn, Nanjing, Jiangsu, Peoples R China

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2015年 / 80卷

基金：

中国国家自然科学基金;

关键词：

Ceramic Matrix Composites; Fatigue strengthening; Residual strength; Microstructural mechanism; CERAMIC-MATRIX COMPOSITES; TENSION-COMPRESSION FATIGUE; HIGH-TEMPERATURE; CYCLIC FATIGUE; AIR; CREEP; STEAM;

D O I：

10.1016/j.ijfatigue.2015.06.019

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

An important result of our investigations of the fatigue response of Ceramic Matrix Composites (CMCs) is the modeling of the residual strength after fatigue loading. According to the experimental results, the residual tensile strength of 2D needled CMCs firstly increases and then decreases as the number of fatigue cycles increases. Based on the microstructure observations and the wear-in/wear-out mechanisms presented by previous researchers, a model is developed here to characterize the residual strength vs. the number of fatigue cycles for the composites. After parameter identification, the presented model describes the change of the residual strength quite well. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：298 / 305

页数：8

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