EFFECTS OF NOTCHES ON CRACK INITIATION IN LOW-CYCLE FATIGUE

被引：6
作者：
MAIYA, PS
机构：
[1] Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
来源：
MATERIALS SCIENCE AND ENGINEERING | 1979年 / 38卷 / 03期
关键词：
D O I：
10.1016/0025-5416(79)90134-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Analysis of low cycle fatique fracture surfaces by means of scanning electron microscopy yields quantitative information on crack initiation life. The procedure is based on crack growth information obtained from fatigue striation spacing measurements with the assumption that each striation is caused by one cycle. The procedure has been extended to quantify the effects on crack initiation life of circumferential notch geometries with theoretical stress concentration factors of 2, 3 and 4. The crack initiation measurements are used to determine the fatigue notch factor and the notch sensitivity and the implications of these results are discussed. © 1979.
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页码：289 / 294
页数：6
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