Fatigue life estimation based on fracture mechanics of single spot welded joints under different loading modes

被引：15
|
作者：
Tanegashima, Ryota [1 ]
Akebono, Hiroyuki [2 ]
Sugeta, Atsushi [2 ]
机构：
[1] Kobelco Res Inst Inc, Mech & Chem Proc Engn Div, Nishi Ku, 1-5-5 Takatsukadai, Kobe, Hyogo 6512271, Japan
[2] Hiroshima Univ, Dept Mech Sci & Engn, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima 7398527, Japan
来源：
ENGINEERING FRACTURE MECHANICS | 2017年 / 175卷
关键词：
Fracture mechanics; Stress intensity factors; Mixed-mode fracture; Welded or bonded joints; INTENSITY FACTOR SOLUTIONS; GEOMETRIC FUNCTIONS; STRESS INTENSITIES; PREDICTION; MICROSTRUCTURE; PERFORMANCE; DESIGN;
D O I：
10.1016/j.engfracmech.2017.01.031
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
To evaluate the accuracy of joint fatigue life estimations obtained using conventional theories, the fatigue properties of shear- and peel-type single spot welded joints were investigated experimentally and analytically. The observed crack initiation angles differed from the predictions obtained using conventional theories, indicating that the theories cannot be used to evaluate the fatigue properties of the joints. In contrast, the present analytical crack initiation angles were in good agreement with the experimental results. Therefore, the effect of the loading mode on the fatigue properties of the single spot welded joints was adequately determined from the range Delta K-I,K-theta max of initial stress intensity factors thorough an analytical evaluation. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：115 / 126
页数：12
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