Research progress in magnetic properties of steel pipe on the eddy current testing signal

被引：0
|
作者：
Song, Kai [1 ]
Kang, Yi-Hua [1 ]
Zhang, Li-Pan [1 ]
Peng, Xu-Zhao [1 ]
机构：
[1] Key Laboratory of Non-destructive Test (Ministry of Education), Nanchang Hangkong University, Nanchang
来源：
Cailiao Gongcheng/Journal of Materials Engineering | 2015年 / 43卷 / 11期
关键词：
Magnetic flux leakage; Magnetic permeability; Magnetic property; Non-destructive testing; Steel pipe;
D O I：
10.11868/j.issn.1001-4381.2015.11.017
中图分类号：
学科分类号：
摘要：
It is particularly important to conduct the non-destructive testing on steel pipes used in many important industries under severe and complicated working conditions. Eddy current testing method with many advantages is a common method for detection of steel pipe after adding saturated magnetic device, but at present, the unique effect of pipe magnetic properties is neglected. It is incomplete to consider that steel pipes will become non ferromagnetic pipeline after magnetic saturation, the lack of understanding the mechanism will cause the distortion in quantitative evaluation on defects. The mechanism and method of eddy current testing on steel pipes were presented. Some magnetic properties parameters, such as magnetic flux leakage field and distortional magnetic permittivity near the defect area which can influence the eddy current testing signal were analyzed. It indicates the inner defect detection of steel pipe will cause a chaos of the existing evaluation methods. The current developing tendency of eddy current testing on steel pipes were summarized, which provides a reference for their future development. © 2015, Beijing Institute of Aeronautical Materials (BIAM). All right reserved.
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页码：106 / 112
页数：6
相关论文
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