Mechanism of stable growth of fatigue cracks

被引：0
|
作者：
Tumanov, NV [1 ]
机构：
[1] Cent Inst Aviat Motors, Moscow, Russia
来源：
ADVANCES IN MECHANICAL BEHAVIOUR, PLASTICITY AND DAMAGE, VOLS 1 AND 2, PROCEEDINGS | 2000年
关键词：
fatigue crack growth; deformation structure; mechanism of periodic splitting-rupture; fatigue striations;
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：
Complex high-energy-type fracture mesomechanism of periodic splitting-rupture (MPSR) is described that results in stable growth of fatigue cracks. The mechanism involves brittle primary fracture and ductile secondary fracture: the first determines spacing of fatigue striations and the second is responsible for its morphological peculiarities. The mathematical model of the primary fracture has been pur forward that makes it possible to predict a crack speed. Some results of the experimental validation of the MPSR model are briefly presented.
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页码：1065 / 1070
页数：6
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