Advances in magnetic flux leakage testing technology

ZHANG Peng1, WEI Minghui1, GUO Zhiyong2, LIU Zhongxiang1

（1. School of Mechatronic Engineering， Southwest Petroleum University， Chengdu 610500, China； 2. Department of Biomedical Engineering, Southern University of Science and Technology， Shenzhen 518055， China）

Abstract： Magnetic flux leakage (MFL) testing technology has the advantages of simple principle， easy engineering implementation and low requirements on the surface of the detected workpiece. Therefore， it has been one of the research hotspots in the field of non-destructive testing (NDT) and widely used for testing long distance pipelines. This paper presents the development of MFL tesing technology from the aspects of basic theory, influencing factors, magnetization technology, signal processing, etc. The problems to be solved and the future development are summarized， which can provide reference for the research and system development of MFL testing technology．

Key words： non-destructive testing (NDT); magnetic flux leakage (MFL) testing; magnetization and detection; signal processing

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漏磁检测技术研究进展

张鹏1, 韦明辉1, 郭智勇2, 刘忠祥1

（1. 西南石油大学 机电工程学院, 四川 成都 610500； 2. 南方科技大学 生物医学工程系， 广东 深圳 518055）

摘要： 漏磁检测技术具有原理简单、 工程实现容易和对被检测工件表面要求不高等特点， 一直是管道无损检测领域的研究热点之一， 尤其在长距离管道检测中被广泛使用。 本文就漏磁场泄露理论、 漏磁场影响因素、 检测技术与设备、 漏磁信号处理等方面对漏磁检测技术的发展进行了论述， 总结了亟待解决的问题以及该技术未来的发展趋势， 旨在为漏磁检测技术的研究和系统研制提供参考与借鉴。

关键词： 无损检测； 漏磁检测； 磁化与检测； 信号处理

引用格式： ZHANG Peng， WEI Minghui， GUO Zhiyong， et al. Advances in magnetic flux leakage testing technology. Journal of Measurement Science and Instrumentation， 2021， 12（1）： 1-11. DOI：10．3969／j．issn．1674-8042．2021．01．001

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