Image Reconstruction of Defects in Metallic Plates Using a Multifrequency Detector System and a Discrete Geometric Approach

Author

Cardelli, E. ; Faba, A. ; Specogna, R. ; Trevisan, F.

Author_Institution

Dept. of Ind. Eng., Perugia Univ.

Volume

43

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

1857

Lastpage

1860

Abstract

We present an inversion procedure for the image reconstruction of defects in metallic plates, using a multifrequency eddy-current system. The solution of the eddy-current forward problem is achieved by means of a discrete geometric approach, while the inverse problem is resolved with an iterative linearization algorithm based on sensitivity data. In particular, we propose a suitable measurement point on the region under test using a probe coil exited by means a multifrequency signal, in order to improve the amount of usable data and the accuracy of the inverse procedure

Keywords

eddy current testing; image reconstruction; inverse problems; iterative methods; plates (structures); structural engineering computing; surface reconstruction; defects image reconstruction; discrete geometric approach; eddy current forward problems; inverse problems; inversion procedure; iterative linearization algorithm; metallic plates; multifrequency detector system; multifrequency eddy-current systems; multifrequency signals; probe coil tests; Coils; Detectors; Image reconstruction; Inverse problems; Iterative algorithms; Iterative methods; Particle measurements; Probes; Signal resolution; Testing; Discrete geometric approach; inverse problems; multifrequency eddy currents; sensitivity analysis;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.892525

Filename

4137684