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

页数：13

共 17 条

[1]

[Anonymous], 1990, SCI TECHNOLOGY COMMI

[2]

[陈玉玲 Chen Yuling], 2004, [中国矿业大学学报. 自然科学版, Journal of China University of Mining & Technology], V33, P592

[3]

Cole A., 1958, J ROYAL AERONAUTICAL, P62

[4] Characterisation of stress concentration of ferromagnetic materials by metal magnetic memory testing [J].

Dong, Lihong ;

Xu, Binshi ;

Dong, Shiyun ;

Chen, Qunzhi .

NONDESTRUCTIVE TESTING AND EVALUATION, 2010, 25 (02) :145-151

[5] Application of the metal magnetic memory method for detection of defects at the initial stage of their development for prevention of failures of power engineering welded steel structures and steam turbine parts [J].

Dubov, Anatoly ;

Dubov, Alexandr ;

Kolokolnikov, Sergey .

WELDING IN THE WORLD, 2014, 58 (02) :225-236

[6] Stress concentration impact on the magnetic memory signal of ferromagnetic structural steel [J].

Huang, Haihong ;

Jiang, Shilin ;

Yang, Cheng ;

Liu, Zhifeng .

NONDESTRUCTIVE TESTING AND EVALUATION, 2014, 29 (04) :377-390

[7]

Huang W., 1986, J NUAA, P2

[8] Main trends of standardization of the radiographic testing method [J].

Kapustin, VI ;

Maksimova, TN ;

Staseev, VG ;

Firstov, VG .

RUSSIAN JOURNAL OF NONDESTRUCTIVE TESTING, 2001, 37 (12) :900-906

[9] Research of magnetic memory signal characteristics corresponding to early fatigue damage [J].

Leng, Jiancheng ;

Zhang, Hui ;

Wang, Lihua ;

Miao, Xiujie ;

Xing, Haiyan .

INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS, 2014, 46 (01) :143-154

[10]

Leven M., 1954, P SOC EXP STRESS AN, P11

← 1 2 →