The AMDE project: 3D volumetric anomalies reconstruction by eddy current testing

Issue title: Selected Papers from the 13th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2007)

Article type: Research Article

Authors: Calcagno, S.^c | Cardelli, E.^a | Faba, A.^a | Formisano, A.^b | Martone, R.^b | Morabito, F.C.^c | Papais, M.^d | Pirani, A.^a | Ricci, M.^a | Specogna, R.^d | Tamburrino, A.^{e; *} | Trevisan, F.^d | Versaci, M.^c | Ventre, S.^e

Affiliations: [a] Università di Perugia, Via G. Duranti, 67 – 06100 Perugia, Italy | [b] Association EURATOM/ENEA/CREATE Seconda Università di Napoli Via Roma 29, 81031 Aversa, Italy | [c] Association EURATOM/ENEA/CREATE Università di Reggio Calabria, V. Graziella Feo di Vito, 89100 Reggio Calabria, Italy | [d] Universitá di Udine, Via delle Scienze 208, 33100 Udine, Italy | [e] Association EURATOM/ENEA/CREATE – DAEIMI Università di Cassino, Via G. Di Biasio 43, 03043 Cassino, Italy

Correspondence: [*] Corresponding author. Tel.: +39 776 299 3675; Fax: +39 776 299 3707; E-mail: tamburrino@unicas.it

Abstract: The AMDE project ("Applicazioni di Metodi per Diagnostica Elettromagnetica", in English "Applied Methods for Electromagnetic Evaluation") is an Italian two-years national granted research project on electromagnetic non-destructive evaluation. This project involves five different research units located in Italy, about twenty researchers and ten among Ph.D. students and post-doc. Here we focus on the contribution of the AMDE project to the reconstruction of 3D volumetric defects in metallic plates as those used in aeronautical and aerospace industry. In particular, in this work we propose an efficient numerical model for evaluating the field due to volumetric anomalies and an inversion method based on the Total Variation Regularization. Numerical examples confirm the capability of the proposed strategy to reconstruct 3D volumetric defects.

Keywords: Eddy current testing, numerical methods, total variation regularization, inverse problems

DOI: 10.3233/JAE-2008-991

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 28, no. 1-2, pp. 321-327, 2008