Title :
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
fDate :
4/1/2006 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.870967
