Physical modeling of an eddy current sensor designed for real time distance and thickness measurement in galvanization industry

Author

Placko, D. ; Clergeot, H. ; Santander, E.

Author_Institution

LESIR-ENS, Cachan, France

Volume

25

Issue

4

fYear

1989

fDate

7/1/1989 12:00:00 AM

Firstpage

2861

Lastpage

2863

Abstract

An analytical model of an eddy current sensor designed for noncontact thickness and distance measurement is presented. A dipolar model allows the external physical parameters (conductivity and permeability of alloys) to be taken into account. Analysis of an iron sheet coated with a conductive material gives an accurate interpretation of the detected signals, useful for optimization of the sensor design. Experimental and theoretical data are compared for a galvanization line, demonstrating the potential of this system for nondestructive continuous evaluation

Keywords

distance measurement; eddy currents; electric sensing devices; surface treatment; thickness measurement; Fe; alloys; analytical model; conductive material; conductivity; detected signals; dipolar model; eddy current sensor; galvanization industry; galvanization line; nondestructive continuous evaluation; optimization; permeability; physical parameters; real time distance measurement; real time thickness measurement; sensor design; Analytical models; Conducting materials; Conductivity; Distance measurement; Eddy currents; Iron; Permeability; Sheet materials; Signal analysis; Signal detection;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.34307

Filename

34307