Eur. Phys. J. Appl. Phys. 43, 231-237 (2008)
https://doi.org/10.1051/epjap:2008112

Characterization of small cracks in eddy current testing^*

¹ Laboratoire de Génie Electrique de Paris (LGEP), CNRS UMR 8507, Supelec, Université Pierre et Marie Curie Paris 6
² Université Paris Sud-P11, 91192 Gif-sur-Yvette, France
³ Budapest University of Technology and Economics (BUTE), 1521 Budapest, Hungary

Corresponding author: yann.le-bihan@lgep.supelec.fr

Received: 4 July 2007
Accepted: 25 February 2008
Published online: 12 June 2008

Abstract

A study on the characterization of small cracks by using eddy current testing (ECT) signal is presented. The significant parameters of the ECT data are selected using principal component analysis according to two approaches. The ECT signal inversion is then achieved using a parametric model trained with synthetic data obtained with a fast numerical simulation tool. The characterization procedure is then tested using experimental data. Results show that information can be obtained concerning the area of the cracks.