Eddy current methods for evaluation of the transformed fraction of metals by voltage source

Author

Kim, Han-Soo ; Park, Il-Han ; Wee, Sang-Bong ; Hahn, Song-Yop ; Han, Min-Koo

Author_Institution

Dept. of Electr. Eng., Seoul Nat. Univ., Kwanak-Koo, Seoul, South Korea

Volume

26

Issue

2

fYear

1990

fDate

3/1/1990 12:00:00 AM

Firstpage

505

Lastpage

508

Abstract

Finite-element methods employing voltage sources rather than widely used current sources are used to evaluate magnetic permeability, impedance, and transformed fraction in metals. The transformed fractions have been successfully estimated by nondestructive eddy-current measurements using voltage sources. The experimental results agree well with those of numerical simulations. The authors also investigate the sensitivity of the eddy-current measuring system as a function of the various parameters by numerical simulations, and present a suitable measuring environment for nondestructive testing of the properties of materials. It is determined that a rectangular sensor may be better than a cylindrical sensor in eddy-current measurements of conductive material

Keywords

eddy current testing; electric sensing devices; finite element analysis; metals; numerical methods; conductive material; eddy current sensors; finite element methods; impedance; magnetic permeability; metals; nondestructive eddy-current measurements; nondestructive testing; numerical simulations; rectangular sensor; sensitivity; transformed fraction; voltage sources; Current measurement; Eddy currents; Electromagnetic measurements; Finite element methods; Impedance measurement; Integral equations; Magnetic materials; Nondestructive testing; Probes; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.106364

Filename

106364