FATIGUE CRACK-GROWTH RETARDATION IN PLANE-STRESS AND PLANE-STRAIN

被引：4

作者：

DAMRI, D ^{[1
]}

KNOTT, JF ^{[1
]}

机构：

[1] UNIV BIRMINGHAM,SCH MET & MAT,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND

来源：

JOURNAL OF MATERIALS SCIENCE | 1991年 / 26卷 / 20期

关键词：

D O I：

10.1007/BF02403964

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The fatigue crack growth retardation phenomenon following a single peak overload applied to thick and thin SEN bend specimens has been studied for a low carbon structural steel. Fatigue tests were performed under a constant load ratio of 0.6, constant stress intensity range of 10 MPa m1/2 and a constant overload ratio of 2.5. An immediate increase followed by a transient retardation in the fatigue crack growth rate, due to the applied overload, was observed for the thick specimen but complete crack arrest was obtained for the thin specimen. The immediate increase in the fatigue crack growth rate following the single peak overload in the thick specimen was attributed to the coincidence of monotonic fracture modes.

引用

页码：5613 / 5617

页数：5