SUBSURFACE CRACK INITIATION DURING FATIGUE AS A RESULT OF RESIDUAL-STRESSES

被引：43
作者：
STARKER, P
WOHLFAHRT, H
MACHERAUCH, E
机构：
[1] Institut Für Werkstoffkunde I, Universität Karlsruhe (Th), Karlsruhe
来源：
FATIGUE OF ENGINEERING MATERIALS AND STRUCTURES | 1979年 / 1卷 / 03期
关键词：
D O I：
10.1111/j.1460-2695.1979.tb00388.x
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Abstract— The influence of shot peening on the bending fatigue strength of hardened specimens of a carbon steel is reported. Effects of residual compressive stresses after shot peening, as a function of distance from the surface, are discussed along with the evidence of scanning electron micrographs from fractured specimens. Subsurface crack initiation is reported at all stress amplitudes below a threshold value of 1100 N/mm2. Assuming that the fatigue strength is enhanced locally due to compressive residual stresses the experimental results can be explained with the aid of the Goodman relationship. Copyright © 1979, Wiley Blackwell. All rights reserved
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页码：319 / 327
页数：9
相关论文
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