CREEP-FATIGUE CRACK-PROPAGATION BEHAVIOR IN A SURFACE CRACKED PLATE

被引：2
|
作者：
NONAKA, I [1 ]
KITAGAWA, M [1 ]
KANEKO, H [1 ]
SATO, T [1 ]
YAMASHITA, M [1 ]
WATASHI, K [1 ]
ASADA, Y [1 ]
机构：
[1] UNIV TOKYO,TOKYO 113,JAPAN
来源：
NUCLEAR ENGINEERING AND DESIGN | 1993年 / 139卷 / 03期
关键词：
D O I：
10.1016/0029-5493(93)90171-5
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
A series of experiments were performed in order to clarify the surface crack growth behavior under creep-fatigue condition. Type 304 stainless steel was tested at 550-degrees-C and 650-degrees-C. Specimens were plates with a surface notch. Loading patterns were axial fatigue, bending fatigue, axial creep-fatigue and bending creep-fatigue. As results were obtained: (1) the beach mark method was available to measure the changes of the crack front shape after the test; (2) the electrical potential method was available to measure the changes of the crack front shape in real time; (3) the crack front shape was affected by the loading mode; and (4) DELTAJ and DELTAJ(c) calculated from the proposed simplified method could characterize the surface crack growth rate.
引用
收藏
页码：293 / 298
页数：6
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