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Surface crack reconstruction from eddy current images using a direct semi-analytic model

Eric Vourc'H 1 Thierry Bore 1 Caifang Cai 2 Romain Soulat 3
1 SATIE - Systèmes et Applications des Technologies de l'Information et de l'Energie
2 L2S - Laboratoire des signaux et systèmes
3 LSV - Laboratoire Spécification et Vérification [Cachan]
Abstract : A method relying on a direct semi-analytic model is proposed for reconstructing cracks from eddy current images. We consider systems featuring a uniform excitation flow which can be modelled by means of fictitious current sources distributed in the crack volume. Thanks to the relative simplicity of the model a reconstruction method based the comparison of EC images is considered. The sensitivity of different images comparison criteria is studied for 2D surface cracks, leading to a reconstruction method based on a genetic algorithm. Numerical experiments are carried out to examine the performances of the algorithm in terms of convergence and accuracy.
Keywords : crack retrieval eddy current genetic algorithm nondestructive testing imaging
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Journal articles
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https://hal-centralesupelec.archives-ouvertes.fr/hal-01263386
Contributor : Dominique Lesselier <>
Submitted on : Wednesday, January 27, 2016 - 4:53:44 PM
Last modification on : Wednesday, September 16, 2020 - 4:46:19 PM

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CNRS | SATIE | L2S | SUP_LSS | CENTRALESUPELEC | SUP_SIGNAUX | ENS-CACHAN | UNIV-CERGY | CNAM | IFSTTAR | TDS-MACS | UNIV-PARIS-SACLAY | SATIE-SIAME | SATIE-II | UNIV-HESAM

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Eric Vourc'H, Thierry Bore, Caifang Cai, Romain Soulat. Surface crack reconstruction from eddy current images using a direct semi-analytic model. Journal of Physics: Conference Series, IOP Publishing, 2015, 657, 012015 (6pp). ⟨10.1088/1742-6596/657/1/012015⟩. ⟨hal-01263386⟩

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