Comparison between different methods for the prediction of the fatigue limit of a member with a small crack

被引：1

作者：

Harkegard, G. ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, NO-7491 Trondheim, Norway

来源：

3RD INTERNATIONAL SYMPOSIUM ON FATIGUE DESIGN AND MATERIAL DEFECTS (FDMD 2017) | 2017年 / 7卷

关键词：

Chromium steel; crack shape; defects; elliptical cracks; fatigue limit; fatigue thresholds; flaw size; plain specimens; small cracks; stress intensity factors;

D O I：

10.1016/j.prostr.2017.11.098

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the Kitagawa-Takahashi diagram and the corresponding analytical model by El Haddad et al., the fatigue limit of a cracked member is a monotonically decreasing function of the fatigue crack size. Based on data from fatigue tests by Schonbauer on plain and cracked members of 12 /0 Cr steel at R =-1, the present investigation shows that the Kitagawa-Takahashi-El Haddad 'short-crack' model yields predictions in good agreement with those by Frost and Murakami for different ranges of the crack size. The comparison with Frost's model is based on a surface through-crack, that with Murakami's \I area model on an embedded elliptical crack. Copyright (C) 2017 The Authors. Published by Elsevier B.V.

引用

页码：343 / 350

页数：8

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