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

页码：293 / 298

页数：6

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