脉冲涡流圆柱型探头参数的优化设计
Optimization Design of Pulsed Eddy Current Circular Probe
摘 要
介绍了脉冲涡流检测的工作原理。通过有限元对圆柱型探头不同参数的线圈周围磁场和被检试件中感生涡流的分布进行了仿真，得出了扁平型的激励线圈产生的磁通量能够有效地渗透到被检试件的内部，有利于系统检测灵敏度的提高。通过不同激励频率在试件中的涡流密度、渗透深度的分析，能够根据脉冲涡流检测对象，得到探头中所用的最佳工作频率，为脉冲涡流探头的实际检测奠定基础。
涡流密度
渗透深度
有限元
Pulsed eddy current testing
Eddy current density
Penetrate depth
Finite element method
Abstract
The paper introduced the theory of pulsed eddy current(PEC) testing. Based on Finite Element Method software, the distribution of magnetism and eddy current was presented for PEC circular probe. The results showed that the eddy current of flat excited coils could be effective to penetrate inside the metal sample, and it could improve the sensitivity of the testing system of PEC testing. Through the analysis of the eddy current density and the penetrating depth for the different excited frequency, the best excited frequency could be concluded. It will provide the guide of PEC probe design.
中图分类号 TG115.28
所属栏目 科研成果与学术交流
基金项目 国家自然科学基金青年基金资助项目(051107053)
收稿日期 2011/9/15
修改稿日期
网络出版日期
作者单位点击查看
备注周德强(1979-)，男，博士，讲师，主要研究方向为传感器技术、电磁无损检测与评估。
引用该论文: ZHOU De-Qiang,ZHANG Bin-Qiang,WANG Hai-Tao,YOU Li-Hua,SHENG Wei-Feng. Optimization Design of Pulsed Eddy Current Circular Probe[J]. Nondestructive Testing, 2012, 34(9): 7～11
周德强,张斌强,王海涛,尤丽华,盛卫峰. 脉冲涡流圆柱型探头参数的优化设计[J]. 无损检测, 2012, 34(9): 7～11
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参考文献
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【2】王春艳，陈铁群，张欣宇.脉冲涡流检测技术的某些进展［J］.无损探伤,2005,29(8):1-4.
【3】杨宾峰，罗飞路，张玉华，等.飞机多层结构中裂纹的定量检测与分类识别［J］.机械工程学报,2006,42(2):63-67.
【4】Zhenmao Chen, Kenzo Miya. A New Approach for Optimal Design of Eddy Current［J］. Journal of Nondestructive Evaluation,1998,17(3):105-116.
【5】Theodoros P T, Epameinondas E K. Impedance evaluation of rectangular coils for eddy current testing of planar media［J］. NDT & E International,2002(35):407-414.
【6】Tomasz Chady, Ryszard Sikora. Optimization of eddy-current sensor for multifrequency systems［J］. IEEE Transactions on Magnetics,2003,39(3):1313-1316.
【7】Li Shu, Huang Songling, Zhao Wei. Development of differential probes in pulsed eddy current testing for noise suppression［J］. Sensors and Actuators A: Physical,2007,135(2):675-679.
【8】Theodoulidis T P, Tsiboukis T D, Kriezis E E. Analytical solutions in eddy current testing of layered metals with continuous conductivity profiles［J］. IEEE Transactions on Magnetics,1995,31(3):2254-2260.
【9】Gui Yun Tian, Yong Li, Catalin Mandache. Study of lift-off invariance for pulsed eddy-current signals［J］. IEEE Transactions on Magnetics,2009,45(1):184-191.
【10】Fangwei Fu, John Bowler. Transient eddy-current driver pickup probe response due to a conductive plate［J］. IEEE Transactions on Magnetics,2006,42(8):2029-2037.
【11】Lefebvre J H V, Mandache C, Letarte J. Pulsed eddy current empirical modeling［C］. Proc. Vth International Workshop, Advances in Signal Processing for Nondestructive Evaluation of Materials. Quebec, Canada,［s.n.］,2005:2-4.
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