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Article Dans Une Revue Inverse Problems Année : 2002

Eddy-current evaluation of 3-D defects in a metal plate

Résumé

The retrieval of voluminous defects in a non-magnetic metal plate from maps of time-harmonic anomalous magnetic fields in air due to a nearby low-frequency source is considered. The wavefield is modelled from a rigorous full-wave vector domain integral formulation and the inversion is performed via a binary version of the so-called contrast-source, gradient-type technique. The functional analysis is outlined and the efficiency of the approach is discussed in the light of inversion results obtained with synthetic data in three typical defect configurations.

Dates et versions

hal-00366109 , version 1 (05-03-2009)

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Daniel dos Reis, Marc Lambert, Dominique Lesselier. Eddy-current evaluation of 3-D defects in a metal plate. Inverse Problems, 2002, 18 (6), pp.1857-1871. ⟨10.1088/0266-5611/18/6/325⟩. ⟨hal-00366109⟩
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