Shape reconstruction of multiple cracks from ECT signals by means of a stochastic method

Author

Rebican, Mihai ; Chen, Zhenmao ; Yusa, Noritaka ; Janousek, Ladislav ; Miya, Kenzo

Author_Institution

Int. Inst. of Universality, Tokyo

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

1079

Lastpage

1082

Abstract

This paper presents an approach to reconstruct multiple cracks from eddy current testing signals by means of a stochastic method such as tabu search. The size, number, and locations of cracks are considered unknown in the inversion process, whereas only the orientation of cracks is supposed to be revealed in advance. Eddy current inspections of a stainless steel plate with closely located EDM slits are performed, and the inversions of measured signals are carried out. The results agree well with the true ones, which validates the proposed algorithm

Keywords

crack detection; eddy current testing; search problems; stochastic processes; ECT signals; EDM slits; crack orientation; eddy current inspection; eddy current testing signals; multiple cracks reconstruction; nondestructive evaluation; signal inversion; stainless steel plate; stochastic method; tabu search; Aerospace testing; Coils; Conductivity; Eddy current testing; Eddy currents; Electrical capacitance tomography; Laboratories; Shape; Steel; Stochastic processes; Eddy current testing (ECT); multiple cracks; nondestructive evaluation; signal inversion; tabu search;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.870967

Filename

1608397