Please wait a minute...
浙江大学学报(工学版)
J4  2009, Vol. 43 Issue (09): 1621-1624    DOI: 10.3785/j.issn.1008973X.2009.
自动化技术、计算机技术     
脉冲涡流解析模型研究范
孟豹,黄平捷,叶波,侯迪波,张光新,周泽魁
（浙江大学 工业控制技术国家重点实验室,浙江 杭州 310027）
Analytical modeling for pulsed eddy current testing
 MENG Bao, HUANG Peng-jie, XIE Bo,HOU Di-bo, ZHANG Guang-xin, ZHOU Ze-kui
(State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, China)
 全文: PDF(478 KB)   HTML
摘要：

研究任意层平板型导电结构脉冲涡流(PEC)差动探头输出信号的解析模型.建立谐波激励下探头阻抗的解析模型,并将探头阻抗解析模型由二重积分转化为定积分,大大减小了计算量；采用有限项傅里叶谐波近似脉冲信号,建立差动探头等效电路,从而应用叠加原理以仿真电压脉冲激励下探头的输出信号.为了验证模型的有效性,针对导电结构厚度检测问题进行仿真与实验测量.计算结果与实验结果吻合良好,表明研究结果是正确的.研究的脉冲涡流探头输出解析模型可用于理解脉冲涡流检测机理、构建探头响应仿真器和改进反演算法．
Abstract:

Analytical modeling for response of differential probes placed above arbitrary number of parallel nonferrous stratified conductive structures for pulsed eddy current (PEC) testing was studied. The closedform solution to the impedance of probe supplied with harmonic excitation was presented. Then the model was transformed from double integral into definite one for significant reduction in computation time. The finite Fourier series expansion was formulated to approximate the pulse excitation and  the equivalent bridge circuit of differential probes was developed in order to apply superposition principle for simulating the response of differential probes driven by voltage pulse. Simulations and experiments on thickness of nonferrous conductive specimen were conducted to verify the  model. The calculated results agreed with the measured results. Results show that the developed model is effective. The model can be used to grasp the essence of PEC testing, create a simulator of probe response and improve the inverse algorithms．
:  TM 154  
基金资助:

国家自然科学基金资助项目（50505045）；国家教育部博士点基金资助项目（200803350058）.
通讯作者: 周泽魁，男，教授，博导.     E-mail: zkzhou@zju.edu.cn
作者简介: 范孟豹（1981-），男，山东高唐人，博士生，从事电涡流无损检测技术研究.
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　

引用本文:

孟豹, 黄平捷, 叶波, 等. 脉冲涡流解析模型研究范[J]. J4, 2009, 43(09): 1621-1624.

MENG Bao, HUANG Peng-jie, XIE Bo, et al. Analytical modeling for pulsed eddy current testing. J4, 2009, 43(09): 1621-1624.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008973X.2009.    或    http://www.zjujournals.com/eng/CN/Y2009/V43/I09/1621

［1］ JOHNSON M J, BOWLER J R, AZEEM F. Pulsed eddycurrent NDE at IOWA State University：recent progress and results ［J］. Review of Quantitative Nondestructive Evaluation, 2003, 22:390396．
［2］ SOPHIAN A, TIAN G Y, RUDLIN J. Electromagnetic and eddy current NDT: a review ［J］. Insight, 2001, 43(5): 302306．
［3］ BOWLER J R, JOHNSON M J. Pulsed eddycurrent response to a conducting halfspace ［J］. IEEE Transactions on Magnetics, 1997, 33(3):22582264．
［4］ LI Y, TTIAN G Y. Fast analytical method for pulsed eddy current evaluation［C］∥Proceeding of 45th Annual British Conference on NDT 2006. UK: StratforduponAvon, 2006．
［5］ PAVO J. Numerical calculation method for pulsed eddycurrent testing ［J］. IEEE Transactions on Magnetics, 2002, 38(2):11691172．
［6］ TSUBOI H, SESHIMA N, SEBESTYEN I, et al. Transient eddy current analysis of pulsed eddy current testing by finite element method ［J］. IEEE Transactions on Magnetics, 2004, 40(2):13301333．
［7］ CHENG C C, DODD C V, DEEDS W E. General analysis of probe coils near stratified conductors ［J］. International Journal of Nondestructive Testing, 1971, 3:109130．
［8］ DODD C V, DEEDS W E. Analytical solutions to eddycurrent probecoil problems ［J］. Journal of Applied Physics, 1968,39(6):28292838．
［9］ ABRAMOWITZ M, STEGUN I. Handbook of mathematical functions with formulas, graphs and mathematical tables ［M］. New York: Wiley, 1972: 358503．
［10］ YAMG H C, TAO C C. Pulsed eddycurrent measurement of a conducting coating on a magnetic metal plate ［J］. Measurement Science and Technology, 2002, 13(8):12591265．
[1] 王启涵, 姚缨英. 电磁感应加热中控制电压的计算[J]. J4, 2010, 44(8): 1553-1557.