The variation of crack energy density (CED) on creep crack growth

被引：0
|
作者：
Jeong, C. S. [1 ]
Nam, B. G. [1 ]
Watanabe, K. [1 ]
机构：
[1] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan
来源：
PROGRESSES IN FRACTURE AND STRENGTH OF MATERIALS AND STRUCTURES, 1-4 | 2007年 / 353-358卷
关键词：
creep crack growth rate; crack energy density; C-t; C*; load line displacement rate;
D O I：
10.4028/www.scientific.net/KEM.353-358.106
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Creep crack growth (CCG) rate has been organized frequently by C* or C-t parameter However, crack behavior of early stage under unsteady state condition has not been explained. Crack energy density (CED), which has been proposed as a parameter that can provide a unified description of crack behavior with no restriction on constitutive equation, can give the general expression about creep crack growth rate. By applying C-t and the concept of CED to the results, we showed that creep crack growth rate for all ranges of creep can be explained in a unified way by CED and its derivatives. Moreover, the physical meaning of the C-t is clarified in the discussion.
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页码：106 / 109
页数：4
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