Numerical calculation method for pulsed eddy-current testing

Author

Pávó, József

Author_Institution

Dept. of Electromagn. Theor., Budapest Univ. of Technol. & Econ., Hungary

Volume

38

Issue

2

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

1169

Lastpage

1172

Abstract

A numerical method is presented for the calculation of the time-dependent response of the interaction of a stratified plate specimen of linear conductor containing a planar flaw and an eddy-current induction coil fed by a current pulse. The flaw might be located on any sides of the layers of the plate specimen. The calculations are done with the help of Fourier-transform (FT). The time-harmonic responses of the system are calculated at properly chosen frequencies, and the obtained results are weighted by the FT of the excitation to provide the FT of the response. The results of the presented method can be used for various pulsed eddy-current testing (ECT) applications

Keywords

Fourier transforms; eddy current testing; flaw detection; Fourier transform; current pulse; eddy current induction coil; linear conductor; numerical method; planar flaw; pulsed eddy current testing; stratified plate; time-dependent response; time-harmonic response; Coils; Conducting materials; Conductors; Electrical capacitance tomography; Frequency; Magnetic field measurement; Nondestructive testing; Probes; Pulse measurements; Shape;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.996299

Filename

996299