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工程设计学报
Chinese Journal of Engineering Design  2020, Vol. 27 Issue (6): 781-785    DOI: 10.3785/j.issn.1006-754X.2020.00.089
General Parts Design     
Design and performance study of runway-type differential eddy-current probe
CHEN Tao, ZHANG Sai, XIAO Xiao-qi, SONG Xiao-chun, LI Dong-lin, LIAO Chun-hui, TU Jun
School of Mechanical Engineering， Hubei University of Technology， Wuhan 430068， China
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Abstract  Aiming at the problem of large geometry size and low sensitivity of defect detection of the traditional differential eddy-current probe, a runway-type differential eddy-current probe was designed on the basis of the traditional differential eddy current probe, which was composed of two induction coils with the same size and reverse connection wrapped by a runway-type excitation coil. Firstly, the COMSOL Multiphysics simulation software was used to establish a runway-type differential eddy-current probe model, and the difference of eddy-current field distribution between the runway-type differential eddy-current probe and the traditional differential eddy-current probe was compared. The detection sensitivity of two kinds of differential eddy-current probes under different defect depths and scanning angles was studied.Next, a runway-type differential eddy-current probe and a carbon-steel plate defect specimens were made, and the detection sensitivities of the runway-type and traditional differential eddy-current probes were compared by experimental testing. The test result showed that the runway-type differential eddy-current probe had a more compact structure and higher defect detection sensitivity compared with the traditional differential eddy-current probe. The research result can provide reference for the optimization design of small size and high precision differential eddy-current probe.

Received: 20 March 2020      Published: 25 December 2020
CLC:  TH 878.3  
  TG 115  
  TP 212  
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CHEN Tao, ZHANG Sai, XIAO Xiao-qi, SONG Xiao-chun, LI Dong-lin, LIAO Chun-hui, TU Jun. Design and performance study of runway-type differential eddy-current probe. Chinese Journal of Engineering Design, 2020, 27(6): 781-785.

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https://www.zjujournals.com/gcsjxb/10.3785/j.issn.1006-754X.2020.00.089     OR     https://www.zjujournals.com/gcsjxb/Y2020/V27/I6/781


跑道型差动式涡流探头设计及其性能研究

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