Fatigue of C/C composites in bending and in shear modes

被引：21
|
作者：
Tanabe, Y
Yoshimura, T
Watanabe, T
Hiraoka, T
Ogita, Y
Yasuda, E
机构：
[1] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
[2] Toyo Tanso Co Ltd, Dept Composite Mat, Ohnohara 7961612, Japan
来源：
CARBON | 2004年 / 42卷 / 8-9期
基金：
日本学术振兴会;
关键词：
carbon composites; fracture; mechanical properties;
D O I：
10.1016/j.carbon.2004.02.022
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The fatigue of C/C composites was investigated in bending and shear modes. In bending, a large stress ratio resulted in a decrease in strength; the decrease became small without water present. However, a large ratio led to a decrease in Young's modulus, regardless of the presence of water. In shear, degradation in strength or fatigue life decreased with increasing the ratio. For specimens fatigue degraded in air, static strength in water decreased as compared with that in air. It is strongly suggested that fatigue degradation in C/C composites is promoted by a combination of stress corrosion and crack propagation promoted by a wedge effect. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1665 / 1670
页数：6
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