SOME CHARACTERISTICS OF FATIGUE CRACK-PROPAGATION OF SURFACE CRACKS

被引：7
|
作者：
MAHMOUD, MA
机构：
[1] Department of Mechanical Engineering, University of Bridgeport, Bridgeport
来源：
ENGINEERING FRACTURE MECHANICS | 1992年 / 41卷 / 06期
关键词：
D O I：
10.1016/0013-7944(92)90245-A
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Semi-elliptical surface cracks, growing due to cyclic loading of plates, undergo significant shape change during the propagation process. An equation for predicting this shape variation for any combination of tension and bending loading is presented. These growing cracks change their shapes such that they follow preferred propagation patterns (PPPs). These PPPs are determined herein for any combination of tension and bending loading. Some of the main characteristics of the PPP are determined and discussed. It is shown that for a given cyclic loading field, the PPP represents an upper limit on the aspect ratio of any surface crack growing due to this cyclic loading.
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页码：961 / 966
页数：6
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