Eddy current testing of anomalies in conductive materials. Part I: qualitative imaging via diffraction tomography techniques

Riadh Zorgati 1 Bernard Duchêne 2 Dominique Lesselier 2 Francis Pons 3
1 EDF R&D - EDF R&D
2 DRE - Département de Recherche en Electromagnétisme ; EMG - Département Electromagnétisme - L2S
L2S - Laboratoire des signaux et systèmes : 1289, SUPELEC-Campus Gif
3 EDF - EDF
Abstract : The authors consider the analysis of eddy current testing of defects in conductive materials. The authors investigate the application of reflection-mode diffraction tomography (DT) imaging techniques. First, exact synthetic data are calculated for various canonical configurations using a method of moments, and they are compared with those calculated by a finite-element code and with experimental data. Analysis of these data in particular evidences interest and some limitations of the Born approximation. Second, two imaging algorithms are proposed and investigated from numerical simulations; the first directly originates from ultrasonic DT where most of the attenuation is neglected, and the other approximately accounts for the skin effect.
Keywords : approximation methods conducting materials data analysis eddy current testing finite element methods moment methods scattering tomography imaging
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Journal articles
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https://hal-supelec.archives-ouvertes.fr/hal-00643928
Contributor : Dominique Lesselier <>
Submitted on : Wednesday, November 23, 2011 - 11:52:01 AM
Last modification on : Friday, September 28, 2018 - 1:16:36 AM

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Riadh Zorgati, Bernard Duchêne, Dominique Lesselier, Francis Pons. Eddy current testing of anomalies in conductive materials. Part I: qualitative imaging via diffraction tomography techniques. IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 1991, 27 (6), pp.4416-4437. ⟨10.1109/20.278657⟩. ⟨hal-00643928⟩

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