Title: Inverse problem for electromagnetic field diffraction on ideal cracks of electric conductive materials

Authors: R. Grimberg, Adriana Savin, Rozina Steigmann

Addresses: Nondestructive Testing Department, National Institute of Research and Development for Technical Physics 47 D. Mangeron Blvd, 700050, Iasi, Romania. ' Nondestructive Testing Department, National Institute of Research and Development for Technical Physics 47 D. Mangeron Blvd, 700050, Iasi, Romania. ' Nondestructive Testing Department, National Institute of Research and Development for Technical Physics 47 D. Mangeron Blvd, 700050 Iasi, Romania

Abstract: In this paper we have studied the electromagnetic field scattering on ideal surface breaking and subsurface cracks, solving the forward and inverse problems of diffraction. The aim of this paper is to present the possibility of the evaluation of position and severity of long and thin cracks in electrically conductive materials. This procedure presents the advantage of reduced calculation time and power, reported for the classical inversion method. The simulated data are compared with experimental data, being in good correlation.

Keywords: diffraction; eddy current; forward problems; inverse problems; electromagnetic field; cracks; conductive materials; non-destructive testing.

DOI: 10.1504/IJMPT.2006.008989

International Journal of Materials and Product Technology, 2006 Vol.26 No.1/2, pp.187 - 197

Published online: 10 Feb 2006 *

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