不锈钢表面裂纹方向电磁检测方法

doi:10.3969/j.issn.1004-132X.2022.09.006

中国机械工程 ›› 2022, Vol. 33 ›› Issue (09): 1057-1064.DOI: 10.3969/j.issn.1004-132X.2022.09.006

不锈钢表面裂纹方向电磁检测方法

闫梁^1,2, 万本例², 胡斌², 范孟豹¹

1. 中国矿业大学机电工程学院, 徐州, 221116;
2. 中国特种设备检测研究院, 北京, 100029

收稿日期:2021-11-03 出版日期:2022-05-10 发布日期:2022-05-17
通讯作者: 胡斌(通信作者),男,1977年生,博士、研究员。研究方向为智能检测。E-mail:hubin@csei.org.cn。
作者简介:闫梁,男,1997年生,硕士研究生。研究方向为交流电磁场检测和裂纹方向判定检测。E-mail:TS19050039A31LD@cumt.edu.cn。
基金资助:
国家重点研发计划NQI重点专项(2017YFF0209700);国家自然科学基金(51671216);中国特种设备检测研究院青年基金(2018青年09);江苏高校优势学科建设工程

Surface Crack Orientation Detection Method of Stainless Steels Based on Electromagnetic Field

YAN Liang^1,2, WAN Benli², HU Bin², FAN Mengbao¹

1. School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, 221116;
2. China Special Equipment Inspection & Research Institute, Beijing, 100029

Received:2021-11-03 Online:2022-05-10 Published:2022-05-17

摘要/Abstract

摘要： 针对传统交流电磁场检测表面不定方向裂纹容易出现漏检的问题，研究了旋转磁场下感应电流方向、裂纹方向变化对平板表面裂纹检测幅值的影响，推导了裂纹走向角度与平面磁场分量波谷幅值的关系表达式，从检测机理角度提出了裂纹方向判定方法及影响因素。建立了奥氏体不锈钢表面裂纹交流电磁场检测有限元仿真模型，开发了基于双U形激励和高分辨率隧道磁阻传感器的金属平板表面裂纹检测系统。仿真和实验结果表明，利用磁场分量的波谷特征能够实现裂纹走向的判定，判定误差不超过8.4°。

关键词: 交流电磁场检测, 旋转磁场, 裂纹走向, 磁场特征

Abstract: To solve the problems that traditional ACFM used to detect cracks in any directions was prone to miss the defects, the effects of eddy current orientation and crack orientation changes on the detection amplitude of flat plate surface cracks were studied under rotating magnetic field. The expressions of the relationship between crack direction angle and trough amplitude of plane magnetic field component were derived, the crack direction determination method and the influencing factors were proposed from the perspective of detection mechanism. ACFM finite element simulation model for the surface cracks of austenitic stainless steels was established. A metal plate surface crack detection system was developed based on double U excitation and high-resolution tunnel magneto resistance(TMR) sensor. Simulation and experimental results show that using the trough characteristics of magnetic field components, the crack direction may be determined and the judgment errors are less than 8.4°.

Key words: alternating current field measurement(ACFM), rotating magnetic field, crack orientation, magnetic field characteristics

中图分类号:

TM154
TG156

闫梁, 万本例, 胡斌, 范孟豹. 不锈钢表面裂纹方向电磁检测方法[J]. 中国机械工程, 2022, 33(09): 1057-1064.

YAN Liang, WAN Benli, HU Bin, FAN Mengbao. Surface Crack Orientation Detection Method of Stainless Steels Based on Electromagnetic Field[J]. China Mechanical Engineering, 2022, 33(09): 1057-1064.

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不锈钢表面裂纹方向电磁检测方法

Surface Crack Orientation Detection Method of Stainless Steels Based on Electromagnetic Field

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