Intrinsic Dissipation in Low Cycle Fatigue for Stainless Steel Weldments

被引：0
|
作者：
Hao Z. [1 ]
Huang Z. [1 ]
Wang Q. [1 ]
机构：
[1] School of Aeronautics and Astronautics, Sichuan University, Chengdu
来源：
Zhongguo Jixie Gongcheng/China Mechanical Engineering | 2020年 / 31卷 / 17期
关键词：
Digital image correlation(DIC); Dissipation; Fatigue; Stainless steel; Welded joint;
D O I：
10.3969/j.issn.1004-132X.2020.17.005
中图分类号：
学科分类号：
摘要：
DIC and infrared thermography(IRT) were used to measure the deformation and surface temperature fields during low cycle fatigue of 310S with welded joints. DIC was used to observe the nonuniformity of local deformations of the welded joints. IRT provided the temperature field distribution of sample surfaces. The test results show that in high stress areas, fatigue failure occurs mostly in the welded joints; in the low stress areas, fatigue failure occurs mostly in base metal areas. The intrinsic dissipation distribution of specimen surfaces may be acquired by solving the local thermal diffusion equation, which may be used to predict the crack initiation positions. © 2020, China Mechanical Engineering Magazine Office. All right reserved.
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页码：2045 / 2050
页数：5
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