Pulsed Eddy Current Testing Based on Gradient Magnetic Field Measurement

China Mechanical Engineering ›› 2014, Vol. 25 ›› Issue (8): 1108-1112,1135.

Previous Articles Next Articles

Pulsed Eddy Current Testing Based on Gradient Magnetic Field Measurement

Qi Yong;Liu Xiangbiao;Li Yong;Chen Zhenmao;Li Weixin

State Key Laboratory for Strength and Vibration of Mechanical Structures,Xi'an Jiaotong University,Xi'an,710049

Online:2014-04-25 Published:2014-05-06
Supported by:
National Natural Science Foundation of China（No. 51007069/E070104）

基于磁场梯度测量的脉冲涡流检测关键技术研究

齐勇;刘相彪;李勇;陈振茂;李炜昕

西安交通大学机械结构强度与振动国家重点实验室,西安,710049

基金资助:
国家自然科学基金资助项目（51007069/E070104）

Abstract

Abstract:

This paper proposed a new PECT technique by introducing GMFM which was intensively used in magnetic resonance imaging(MRI) and superconducting quantum interference devices(SQUID) to PECT in an effort to enhance the PECT sensitivity to surface cracks. The scanning results regarding PECT evaluation of surface cracks were intensively analyzed via simulations and experiments. It is found that the GMFM signals have higher sensitivity than that of the conventional PECT differential signals in evaluation of surface cracks, which verifies the validity of the proposed method.

Key words: electromagnetic nondestructive testing and evaluation, pulsed eddy current testing(PECT), gradient magnetic field measurement(GMFM), surface crack

摘要：

提出一种新型脉冲涡流检测技术,将广泛应用于医学核磁共振成像、超导量子干涉仪的磁场梯度测量技术引入到脉冲涡流检测技术中,以提高脉冲涡流检测金属构件表面缺陷灵敏度。通过仿真和试验,着重分析了脉冲涡流检测表面裂纹的扫描结果。研究发现,磁场梯度信号较磁场差分信号具有更高的检测灵敏度,验证了所提出技术的有效性。

关键词: 电磁无损检测, 脉冲涡流检测, 磁场梯度测量技术, 表面裂纹

CLC Number:

TG115.28

Qi Yong, Liu Xiangbiao, Li Yong, Chen Zhenmao, Li Weixin. Pulsed Eddy Current Testing Based on Gradient Magnetic Field Measurement[J]. China Mechanical Engineering, 2014, 25(8): 1108-1112,1135.

齐勇, 刘相彪, 李勇, 陈振茂, 李炜昕. 基于磁场梯度测量的脉冲涡流检测关键技术研究[J]. 中国机械工程, 2014, 25(8): 1108-1112,1135.

References

[1]欧阳奇,张敏,赵立明,等.基于脉冲涡流技术的连铸坯表面缺陷检测[J].中国机械工程,2010,21(10):1235-1239.
Ouyang Qi,Zhang Min,Zhao Liming,et al.Study on Continuous Casting Billet Surface Defect Detection Based on Pulsed Eddy Current Technique[J].China Mechanical Engineering,2010,21(10):1235-1239.
[2]齐勇,李勇,陈振茂,等. 一种新型脉冲涡流提离交汇点的实验研究[J].空军工程大学学报:自然科学版,2012,13(6):80-84.
Qi Yong,Li Yong,Chen Zhenmao,et al.Experimental Investigation on a New Lift-off Intersection Point of Pulsed Eddy Current Testing[J].Journal of Air Force Engineering University:Natural Science Edition,2012,13(6):80-84.
[3]齐勇,李勇,陈振茂,等.基于暂态磁场梯度信号的脉冲涡流无损检测和定量评估技术[J].无损检测,2012,34(10):3-8.
Qi Yong,Li Yong,Chen Zhenmao,et al.Pulsed Eddy Current Testing Based on Transient Gradient Magnetic Field Signals[J]. Nondestructive Testing,2012,34(10):3-8.
[4]周德强,张斌强,田贵云,等.脉冲涡流检测中裂纹的深度定量及分类识别[J].仪器仪表学报,2009,30(6):1190-1194.
Zhou Deqiang,Zhang Binqiang,Tian Guiyun,et al.Quantification of Depth and Classification of Cracks Using Pulsed Eddy Current Test Technology[J].Chinese Journal of Scientific Instrument,2009,30(6):1190-1194.
[5]杨宾峰,张辉,赵玉丰,等.基于新型脉冲涡流传感器的裂纹缺陷定量检测技术[J].空军工程大学学报:自然科学版, 2011, 12(1): 73-77.
Yang Binfeng,Zhang Hui,Zhao Yufeng,et al.Quantification of Crack Defect Using A New Pulsed Eddy Current Sensor[J]. Journal of Air Force Engineering University:Natural Science Edition,2011,12(1):73-77.
[6]Tian G Y,Sophian A.Defect Classification Using a New Feature for Pulsed Eddy Current Sensors[J].NDT&E International, 2005,38:77-82.
[7]Li Y,Qi Y,Chen Z M,et al.Pulsed Eddy Current Testing Based on Gradient Magnetic Field Measurement[C]//The Proceedings of the 6th International Conference on Electromagnetic Field Problems and Applications(ICEF 2012). Dalian, 2012:1-4.
[8]Valentino M, Bonavolontà C, Marrocco N,et al.GMR Second Order Electronic Gradiometer as Eddy Current Probe in NDE Applications[J].American Institute of Physics,2009,28:350-354.
[9]Li Y, Chen Z M, Qi Y. Generalized Analytica Expressions of Lift off Intersection in PEC and a Liftoff-Intersection-based Fast Inverse Model[J].IEEE Transactions on Magnetics,2011,47(10):2931-2934.
[10]Li Y,Tian G Y,Simm A.Fast Analytical Modelling for Pulsed Eddy Current Evaluation[J].NDT&E International, 2008, 41(6):477-483.

Pulsed Eddy Current Testing Based on Gradient Magnetic Field Measurement

基于磁场梯度测量的脉冲涡流检测关键技术研究

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 4

Recommended Articles

Metrics

[1]	Liu Xingle, Liu Zhiping, Li Xuan, Jiang Lei. Method for Surface Crack Detection of Welded Structure in Pulsed Eddy Current Thermography [J]. China Mechanical Engineering, 2016, 27(14): 1925-1931.
[2]	LI Biao, LI Jun, GAO Beng, SHU Yong-Wei, LUO Hai-Jun, ZUO Dui-Wen. Study on Depth of Subsurface Crack Layer by Free and Fixed Abrasive Lapping [J]. China Mechanical Engineering, 2013, 24(07): 895-898,905.
[3]	Ren Xudong;Zhang Yongkang;Zhou Jianzhong;Gu Yongyu;Zhou Lichun. Study on Metal Crack Mode under Laser-shock Processing [J]. J4, 2008, 19(3): 358-360.
[4]	Gao Zengliang;Cai Gangsi,;Liang Lihua;Lei Yuebao. A Limit Load Solution for a Thick-walled Cylinder with a Fully-circumferential Inner Surface Crack [J]. J4, 2008, 19(11): 0-1269.