Fatigue crack propagation at sharp notches

被引：0

作者：

Wurm, B ^{[1
]}

Pham, VB ^{[1
]}

Sahn, S ^{[1
]}

机构：

[1] Tech Univ Dresden, Inst Festkorpermech, D-8027 Dresden, Germany

来源：

FATIGUE '99: PROCEEDINGS OF THE SEVENTH INTERNATIONAL FATIGUE CONGRESS, VOLS 1-4 | 1999年

关键词：

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Crack propagation from different sharp notches was observed especially in low cycle fatigue tests under 4-point-bending with constant amplitudes. Cracks were measured using the replication method. Two materials with different microstructures were examined. For description the stress intensity factor for cracks from notches by Smith/Miller [2] and the crack closure formula by Newman [3] were used. Nominal stresses greater than the yield stress were corrected with an elastic-plastic assumption. The crack closure of small cracks was included in an extension with d(0)* [4]. The description with the SIF gives good results when a plasticity correction is used.

引用

页码：1163 / 1168

页数：6

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