基于固态磁场传感器的脉冲涡流检测铁磁性构件腐蚀缺陷
Pulsed Eddy Current Inspection of Corrosion in Magnetic Structures Using Solid-state Magnetic Field Sensors
摘 要
脉冲涡流检测技术是一种新兴的电磁无损检测技术, 该技术可用于铁磁性材料腐蚀缺陷的检测和评估。目前国内外铁磁性材料腐蚀缺陷的脉冲涡流检测多采用盘式检出线圈拾取感应电压信号, 但对采用固态磁场传感器拾取磁场信号的分析尚存不足。通过解析建模仿真和试验发现, 与传统感应电压信号相比, 磁场信号对铁磁性构件腐蚀缺陷深度的响应更为灵敏, 有利于铁磁性构件腐蚀缺陷检出率和评估精度的提升。
铁磁性构件
磁场测量
灵敏度分析
Pulsed eddy current testing
Magnetic structures
Magnetic field measurement
Sensitivity analysis
Abstract
As one of the advanced electromagnetic nondestructive evaluation techniques, Pulsed Eddy Current Testing (PECT) has been found applicable for detection and evaluation of corrosion in magnetic structures. Pancake induction coils are currently preferred for signal acquisition during PECT of magnetic structures. In this paper, the solid-state magnetic field sensor is intensively investigated regarding field sensing and acquisition of PECT signals. Through simulations and experiments, it has been found that compared with the Electromotive Force (EMF) signals acquired by using pancake induction coils, magnetic field signals picked up by solid-state magnetic field sensors have higher sensitivity to corrosion, which enhances the possibility of detection and accuracy of quantification of corrosion in magnetic structures.
中图分类号 TG115.28
所属栏目 2014远东无损检测新技术论坛论文精选
基金项目 国家自然科学基金资助项目(51007069, 51477127)
收稿日期 2014/6/25
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网络出版日期
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备注闫贝(1986-), 男, 硕士, 主要从事电磁无损检测研究工作。
引用该论文: YAN Bei,LI Yong,LIU Xiang-biao,CHEN Zhen-mao,WANG Jun. Pulsed Eddy Current Inspection of Corrosion in Magnetic Structures Using Solid-state Magnetic Field Sensors[J]. Nondestructive Testing, 2014, 36(10): 15～18
闫贝,李勇,刘相彪,陈振茂,王钧. 基于固态磁场传感器的脉冲涡流检测铁磁性构件腐蚀缺陷[J]. 无损检测, 2014, 36(10): 15～18
被引情况:
【1】陈定岳,赖圣,陈虎,蔚道祥,付跃文, "包覆层管道内壁局部腐蚀脉冲涡流检测探头的性能比较",无损检测 37, 12-16(2015)
【2】闫贝,李勇,李达,李一力,陈振茂,王钧, "金属亚表面腐蚀缺陷的脉冲调制涡流磁场梯度成像",无损检测 38, 10-14(2016)
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参考文献
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【2】周德强, 李勇, 张秋菊, 等. 脉冲涡流金属厚度检测信号及其特征提取[J]. 中国机械工程, 2012, 23(15): 1771-1773.
【3】王健, 傅迎光, 孙明璇, 等.基于脉冲涡流检测技术的铁磁性材料厚度的测量[J]. 北京交通大学学报, 2012(6): 133-136.
【4】刘相彪, 李勇, 陈振荗, 等.基于磁场测量的脉冲涡流检测双层套管仿真[J].无损检测, 2013, 35(10): 48-52.
【5】吕华, 刘明峰, 曹江伟, 等.隧道磁电阻(TMR)磁传感器的特性与应用[J]. 磁性材料及器件, 2012(3): 14-15.
【6】LI Yong, TIAN Gui-yun, ANTHONY S, Fast analytical modelling for pulsed eddy current evaluation[J]. NDT&E International, 2008, 41: 477-483.
【7】LI yong, CHEN Zhen-mao, MAO ying, et al. Quantitative evaluation of thermal barrier coating based on eddy current technique[J]. NDT&E International, 2012, 50: 29-35.
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