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An Introductory Note on Finite Element Problems Based on the Eddy Current Testing Approach
Department of Electric Engineering, Santa Catarina State University, Joinville, Brazil
Department of Electric Engineering, Santa Catarina State University, Joinville, Brazil
Department of Electric Engineering, Santa Catarina State University, Joinville, Brazil
- 1 Department of Electric Engineering, Santa Catarina State University, Joinville, Brazil
- 2 Department of Electric Engineering, Santa Catarina State University, Joinville, Brazil
- 3 Department of Electric Engineering, Santa Catarina State University, Joinville, Brazil
Journal of Electromagnetic Analysis and Applications·Volume 13 (2021)·Pages 145–159·Published 3 November 2021·DOI10.4236/jemaa.2020.1311011
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Abstract
The paper addresses the first eddy current benchmark problem proposed by the World Federation of Nondestructive Evaluation Centers (WFNDEC). The problem simulates the eddy current response to the presence of an axisymmetric circumferential defect in an Inconel-600 tube. All simulations employ the axisymmetric code of the electromagnetic field simulator Finite Element Method Magnetics. For three different frequencies of excitation, it is explained how the displacement of the detecting coil inside the tube leads to a variation in the impedance of the eddy current coil. Variations of the resistive and inductive components of the impedance with distance from the defect region are used to build the impedance trajectory for each frequency of analysis.
KeywordsEddy Current TestingFinite Element AnalysisNondestructive Inspection Methods
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