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

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.
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Submitted on : Wednesday, January 27, 2016 - 4:53:44 PM
Last modification on : Thursday, February 7, 2019 - 5:20:20 PM

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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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