The effect of DC magnetic field on signal characteristics of magnetic Barkhausen noise

被引：0
|
作者：
Liu, Chengyong [1 ]
Li, Erlong [1 ]
Wang, Shiqiang [2 ]
Wu, Jianbo [1 ]
Fang, Hui [1 ]
He, Sha [2 ]
机构：
[1] Sichuan Univ, Sch Mech Engn, Chengdu 610065, Peoples R China
[2] CNPC Chuanqing Drilling & Explorat, Safety Environm Qual Surveillance & Inspect Res I, Guanghan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS | 2020年 / 64卷 / 1-4期
基金：
中国国家自然科学基金;
关键词：
Magnetic Barkhausen noise; DC magnetic field; signal characteristics; pipeline; RESIDUAL-STRESS; ASTM-36; STEEL; BIAS FIELD; DEPENDENCE;
D O I：
10.3233/JAE-209402
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Magnetic Barkhausen Noise (MBN) detection technology shows great potential in the pipeline detection of stress, microstructure, and fatigue damage. However, in actual application, some pipes such as those near power plant are exposed to external magnetic fields or contain remanence. The presence of these magnetic fields will affect MBN features and then influence the testing results. To investigate the effect of DC magnetic field on MBN signal characteristics, theoretical analysis and experimental verification were carried out in this paper. It is found that the intensity and direction of the DC magnetic field have great effects on MBN signal characteristics, including the changes in the energy of MBN signal, the peak position and the shape of MBN signal profile.
引用
收藏
页码：887 / 894
页数：8
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