Development of a 3D electromagnetic model for eddy current tubing inspection: Application to the simulation of probe eccentricity

Issue title: Special Volume: Proceedings of the eleventh International Symposium on Applied Electromagnetics and Mechanics ISEM-Versailles ISEM 03

Article type: Research Article

Authors: Prémel, Denis^{a; *} | Pichenot, Grégoire^a | Sollier, Thierry^a

Affiliations: [a] C.E.A Saclay, Batiment 611, 91191 Gif-sur-Yvette, France

Correspondence: [*] Corresponding author: Denis Prémel, Tel.: +33 69 08 59 63; Fax: +33 69 08 75 97; E-mail: [email protected]

Abstract: A theoretical and numerical model is developed for the computation of Eddy Current (EC) signals provided by a differential type probe used for tubing inspection. The main application of interest is to make simulated experiments for studying the perturbations affecting the EC signal such as the variations of the eccentricity and the probe wobble. 3D flaws are introduced by a variation in the local distribution of the conductivity. The forward problem is handled by using a dyadic Green's function approach. Typical impedance plane trajectories obtained with a differential probe are given.

Keywords: non destructive evaluation, forward problem, probe eccentricity

DOI: 10.3233/JAE-2004-619

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 19, no. 1-4, pp. 521-525, 2004