Flaws characterization with pulsed eddy currents NDT

Thierry Clauzon (1) , Frédéric Thollon (1, 2) , Alain Nicolas (1, 2)

1 CEGELY - Centre de génie électrique de Lyon
2 AMPERE - Ampère

In this paper, we present a method for characterizing flaws in metallic structures with pulsed eddy current non-destructive testing (NDT), In a first step, we explain why we have chosen a deconvolution method based on Conjugate Gradient algorithm (CG), After a description of this method and the way it is used for characterization, a validation is performed by coupling it with a 2D FEM (2 dimensional finite elements method) package. The obtained results are compared with experimental measurements. In the last step, a parametric study on parameters obtained with the impulse response gives an estimation of the dimensions of the flaw.

Mots clés: eddy current testing; flaw characterization; IMPULSE-RESPONSE; DECONVOLUTION

Domaines: Electromagnétisme; Modélisation et simulation; Autre

Thierry Clauzon, Frédéric Thollon, Alain Nicolas. Flaws characterization with pulsed eddy currents NDT. IEEE Transactions on Magnetics, 1999, 35 (3 Part 1), pp.1873-1876. ⟨10.1109/20.767399⟩. ⟨hal-00141544⟩