Evaluation of stress concentration of U-shaped notch based on residual magnetic field measurements

被引：6
|
作者：
Bao, Sheng [1 ]
Jin, Pengfei [1 ]
Zhao, Zhengye [1 ]
Luo, Qiang [1 ]
机构：
[1] Zhejiang Univ, Inst Struct Engn, Hangzhou 310058, Zhejiang, Peoples R China
来源：
STRAIN | 2019年 / 55卷 / 06期
关键词：
residual stress; stress concentration; tangential RMF signal; U-shaped notch; MEMORY SIGNAL;
D O I：
10.1111/str.12328
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this research, the correlation between the stress concentration and the residual magnetic field (RMF) of 30Cr steel was investigated. Tensile tests were carried out to measure the RMF signals on the surface of U-shaped defect specimens. It was found that the tangential RMF signal at the defect area is correlated to the applied load and the stress concentration factor. A new method based on magnetic field to evaluate the stress concentration degree is proposed. This research provides a potential possibility for quantitative inspection of the stress concentration in ferromagnetic steels using the RMF measurements.
引用
收藏
页数：13
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