On plane stress plane strain interactions in fatigue crack growth

被引：44

作者：

Bao, H

McEvily, AJ

机构：

[1] Univ Connecticut, Dept Met, Storrs, CT 06269 USA

[2] Univ Connecticut, Inst Sci Mat, Storrs, CT 06269 USA

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 1998年 / 20卷 / 06期

基金：

美国国家科学基金会;

关键词：

fatigue crack growth; steel; aluminium alloys; crack closure;

D O I：

10.1016/S0142-1123(98)00013-9

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Fatigue crack growth studies have been carried out on steel and aluminum specimens of two thicknesses, 0.3 and 6.35 mm. For fatigue crack growth rates in the range 10(-5)-10(-4) mm/cycle, the process of fatigue crack growth in plane stress (as well as in the surface layer of a nominally plane strain specimen) was discontinuous in nature, whereas fatigue crack growth in plane strain occurred on a cycle-by-cycle basis. A slower rate of fatigue crack growth was also observed in the thinner specimens, a circumstance attributed to a higher level of crack closure. (C) 1998 Elsevier Science Ltd.

引用

页码：441 / 448

页数：8