<abstract xmlns="http://www.w3.org/1999/xhtml"><p>This work presents an axially symmetric mathematical model of an I-cored coil placed over a two-layered conductive material with a cylindrical surface hole. The problem was divided into regions for which the magnetic vector potential of a filamentary coil was established applying the truncated region eigenfunction expansion method. Then the final formula was developed to calculate impedance changes for a cylindrical coil with reference to both the air and to a material with no hole. The influence of a surface flaw in the conductive material on the components of coil impedance was examined. Calculations were made in Matlab for a hole with various radii and the results thereof were verified with the finite element method in COMSOL Multiphysics package. Very good consistency was achieved in all cases.</p></abstract>

This work presents an axially symmetric mathematical model of an I-cored coil placed over a two-layered conductive material with a cylindrical surface hole. The problem was divided into regions for which the magnetic vector potential of a filamentary coil was established applying the truncated region eigenfunction expansion method. Then the final formula was developed to calculate impedance changes for a cylindrical coil with reference to both the air and to a material with no hole. The influence of a surface flaw in the conductive material on the components of coil impedance was examined. Calculations were made in Matlab for a hole with various radii and the results thereof were verified with the finite element method in COMSOL Multiphysics package. Very good consistency was achieved in all cases.

I-cored Coil Probe Located Above a Conductive Plate with a Surface Hole

Institute of Electronics, Faculty of Automatic Control, Electronics and Computer Science

Measurement Science Review

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"I-cored Coil Probe Located Above a Conductive Plate with a Surface Hole"}

This work presents an axially symmetric mathematical model of an I-cored coil placed over a two-layered conductive material with a cylindrical surface hole....

I-cored Coil Probe Located Above a Conductive Plate with a Surface Hole

Online veröffentlicht: 07. März 2018

Seitenbereich: 7 - 12

Eingereicht: 25. Okt. 2017

Akzeptiert: 12. Feb. 2018

DOI: https://doi.org/10.1515/msr-2018-0002

Schlüsselwörter
Nondestructive testing, eddy current, coil impedance, calculation, modeling, truncated region eigenfunction expansion

© 2018 Grzegorz Tytko et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

I-cored Coil Probe Located Above a Conductive Plate with a Surface Hole

Online veröffentlicht: 07. März 2018

Seitenbereich: 7 - 12

Eingereicht: 25. Okt. 2017

Akzeptiert: 12. Feb. 2018

DOI: https://doi.org/10.1515/msr-2018-0002

SchlüsselwörterNondestructive testing, eddy current, coil impedance, calculation, modeling, truncated region eigenfunction expansion

© 2018 Grzegorz Tytko et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Schlüsselwörter
Nondestructive testing, eddy current, coil impedance, calculation, modeling, truncated region eigenfunction expansion