Flaws characterization with pulsed eddy currents NDT

Author

Clauzon, T. ; Thollon, F. ; Nicolas, A.

Author_Institution

CEGELY, Ecole Centrale de Lyon, Ecully, France

Volume

35

Issue

3

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

1873

Lastpage

1876

Abstract

In this paper, we present a method for characterizing flaws in metallic structures with pulsed eddy current nondestructive testing (NDT). In a first step, we explain why we have chosen a deconvolution method based on conjugate gradient algorithm (CG). After a description of this method and the way it is used for characterization, a validation is performed by coupling it with a 2D FEM (2 dimensional finite elements method) package. The obtained results are compared with experimental measurements. In the last step, a parametric study on parameters obtained with the impulse response gives an estimation of the dimensions of the flaw

Keywords

conjugate gradient methods; deconvolution; eddy current testing; finite element analysis; flaw detection; transient response; 2 dimensional finite elements method; 2D FEM; conjugate gradient algorithm; deconvolution method; eddy current testing; flaw dimensions estimation; flaws characterisation; impulse response; metallic structures; pulsed eddy current nondestructive testing; pulsed eddy currents NDT; Assembly; Character generation; Convolution; Deconvolution; Eddy current testing; Eddy currents; Equations; Nondestructive testing; Packaging; Tellurium;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.767399

Filename

767399