Page 82 - 无损检测2024年第十期

试验研究
试验研究

DOI：10.11973/wsjc240085

风机塔筒焊缝缺陷漏磁与磁扰动检测性能对比

申 扬 ，王钰珏 ，吴 斌 ，刘秀成 ，韩振华 ，张长虎 ，何存富 2
2
1
2
3
3
2
（1. 北京工业大学 机械与能源工程学院，北京 100124；2. 北京工业大学 信息学部，北京 100124；

3. 北京中唐电工程咨询有限公司，北京 100040）
摘 要：风机塔筒焊缝缺陷种类多样，不仅对塔筒的结构完整性构成重大威胁，对焊接区的无损
检测也提出了相当大的挑战。采用漏磁与磁扰动检测方法对风机塔筒焊缝区域进行检测并对比其检
测性能，为利用两种方法综合检测塔筒焊缝缺陷提供依据。首先，研制了适于焊缝缺陷检测的漏磁与
磁扰动阵列传感器，制备了4种类型的缺陷试样并构建了检测试验平台；其次，试验获得了不同缺陷
的漏磁与磁扰动多通道阵列扫查结果，并采用插值成像的方法对缺陷进行了二维成像；最后，利用检
测结果对漏磁与磁扰动检测的性能进行了对比分析。结果表明，漏磁检测在小宽度裂纹检测和圆孔
深度表征方面优于磁扰动检测，磁扰动则对小角度裂纹和小尺寸圆孔缺陷的检出性能更好。
关键词：焊缝缺陷；漏磁；磁扰动；多通道成像
中图分类号：TG115.28 文献标志码：A 文章编号：1000-6656(2024)10-0048-07

Comparasion of the detection performance of magnetic flux leakage and magnetic field

disturbance in weld defect of turbine tower

SHEN Yang , WANG Yujue , WU Bin , LIU Xiucheng , HAN Zhenhua , ZHANG Changhu , HE Cunfu 2
3
3
2
2
2
1
（1. College of Mechanical and Energy Engineering, Beijing University of Technology, Beijing 100124, China;
2. Faculty of Information Technology, Beijing University of Technology, Beijing 100124, China;
3. Beijing Zhongtangdian Engineering Consulting Co., Ltd., Beijing 100040, China）
Abstract: The turbine tower exhibits a variety of weld defects, which not only pose a significant threat to its structural
integrity but also present a substantial challenge for non-destructive testing of the welding zone. This study investigated and
compared the detection methods and characteristics of magnetic flux leakage (MFL) and magnetic field disturbance (MFD)
in the weld area of the turbine tower through experimental analysis, providing a foundation for comprehensive detection
of weld defects using both approaches. Firstly, the MFL and MFD array sensors specifically designed for weld defect
detection were developed. Additionally, four types of defect samples and constructed a comprehensive test platform were
prepared. Secondly, Scanning results were obtained using the MFL and magnetic disturbance multi-channel arrays under
various defect conditions. These defects were then imaged using an interpolation imaging method. Finally, by comparing
and analyzing the detection results, it was found that MFL detection outperformed MFD in terms of detecting small-width
cracks and characterizing hole depths. On the other hand, MFD was more effective in detecting small-angle cracks and
smaller-sized hole defects.
Key words: weld defect; magnetic flux leakage; magnetic field disturbance; multi-channel imaging

风机塔筒主要通过卷板焊接成筒再由多筒分段
收稿日期：2024-03-03
基金项目：国家自然科学基金（1212201，62271015，12302237） 焊接而成。焊缝是塔筒的力学性能薄弱区域，在复
作者简介：申 扬（1999—），男，硕士，主要研究方向为电磁无损 杂载荷和大气腐蚀等多因素作用下，易形成焊缝区
检测
域腐蚀和裂纹等缺陷，严重威胁塔筒结构健康状态。
通信作者：王钰珏（1990—），男，博士，讲师，主要研究方向为
风机塔筒焊缝缺陷种类多样，裂纹方向也不同，不仅
无损检测与评价
48
2024 年 第 46 卷 第 10 期
无损检测