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Cluster Computing
Published in: Cluster Computing 3/2019

08-03-2018

The metal thickness detection using pulsed eddy-current computation and detection method

Authors: Liang Zhao, Chu-Jun Li, Zhong-Xing Duan, Wei Wang, Xiao-Dong Wu

Published in: Cluster Computing | Special Issue 3/2019

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Abstract

Through detecting method of pulsed eddy-current (PEC) and according to thickness testing model of multi-layer metal, infer the mathematical model of eddy current testing method in single-layer metal. Use Maxwell field equations to find solutions of vector magnetic potential in its boundary conditions thus infer the impedance of hollow coil placed right above metal. Analyze the variation relationship between induced current and metal thickness in theory level. (1) Obtain three characteristic signals of induced current: altitude of current peak value (ACPV), time of reaching current peak (TRCP) and time of traversing zero point (TTZP). The thickness of the metal and the distance between the metal and coil were obtained. (2) Introduce the concept of the lift-off intersection point (LOI) and puts forward a new method of metal thickness detection based on the LOI. By analyzing the results of the experiment, it confirms the feasibility of the LOI of measurement in the metal thickness.
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Metadata
Title
The metal thickness detection using pulsed eddy-current computation and detection method
Authors
Liang Zhao
Chu-Jun Li
Zhong-Xing Duan
Wei Wang
Xiao-Dong Wu
Publication date
08-03-2018
Publisher
Springer US
Published in
Cluster Computing / Issue Special Issue 3/2019
Print ISSN: 1386-7857
Electronic ISSN: 1573-7543
DOI
https://doi.org/10.1007/s10586-018-2335-4

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