A transfer function method for eddy current nondestructive testing

Author

Tan, Mingjuan ; Yuan, Jiansheng ; Ma, Xinshan

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing, China

Volume

34

Issue

5

fYear

1998

fDate

9/1/1998 12:00:00 AM

Firstpage

3459

Lastpage

3462

Abstract

A transfer function method is introduced to eddy current nondestructive testing (ECT) in this paper. Actually ECT is used to investigate the differences of the materials with and without flaws. The transfer function of the tested materials for ECT is defined as the frequency property of the materials. With the transfer function method, the difference is an area bounded by the two transfer functions of the materials with and without flaws, while the impedance method can only provide a few discrete impedance values. Obviously, the area can provide more information of the materials than a few discrete values. The numerical and the experimental studies have proved that the transfer function method is an efficient approach for ECT

Keywords

eddy current testing; eddy currents; nondestructive testing; transfer functions; eddy current nondestructive testing; electromagnetic analysis; frequency property; material flaws; transfer function method; Conducting materials; Eddy currents; Electrical capacitance tomography; Electromagnetic fields; Equations; Frequency; Impedance; Materials testing; Nondestructive testing; Transfer functions;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.717815

Filename

717815