Version 1
: Received: 20 April 2021 / Approved: 22 April 2021 / Online: 22 April 2021 (20:55:17 CEST)
How to cite:
Jin, Z.; qin, G.; fan, H.; huang, R.; chen, Z.; zhao, Q.; lu, M.; zhang, Z.; peyton, A.; yin, W. Boundary-Element Analysis of Magnetic Polarization Tensor for Metallic Cylinder. Preprints2021, 2021040618. https://doi.org/10.20944/preprints202104.0618.v1.
Jin, Z.; qin, G.; fan, H.; huang, R.; chen, Z.; zhao, Q.; lu, M.; zhang, Z.; peyton, A.; yin, W. Boundary-Element Analysis of Magnetic Polarization Tensor for Metallic Cylinder. Preprints 2021, 2021040618. https://doi.org/10.20944/preprints202104.0618.v1.
Cite as:
Jin, Z.; qin, G.; fan, H.; huang, R.; chen, Z.; zhao, Q.; lu, M.; zhang, Z.; peyton, A.; yin, W. Boundary-Element Analysis of Magnetic Polarization Tensor for Metallic Cylinder. Preprints2021, 2021040618. https://doi.org/10.20944/preprints202104.0618.v1.
Jin, Z.; qin, G.; fan, H.; huang, R.; chen, Z.; zhao, Q.; lu, M.; zhang, Z.; peyton, A.; yin, W. Boundary-Element Analysis of Magnetic Polarization Tensor for Metallic Cylinder. Preprints 2021, 2021040618. https://doi.org/10.20944/preprints202104.0618.v1.
Abstract
The magnetic polarization tensor has a promising capability of determining the geometry and material properties of metallic samples. In this paper, a novel computation method is proposed to estimate the magnetic polarization tensors for the metallic samples using the boundary element method. In this method, the metallic sample is placed in a uniformly distributed magnetic field. Based on assumptions that the excitation frequency and/or the conductivity of the sample is very high, the metallic sample is regarded as a perfect electrical conductor (PEC). Therefore, the scattered field at a certain distance can be simulated. By utilising the boundary element method, the magnetic polarization tensor can be derived from the simulated scattered field. The theoretical calculation is presented and simulations and experiments have been carried out to validate the proposed method. The results from the simulation are matched with the analytical solution for the case of sphere samples. Moreover, there is a good agreement between the simulation results and the experimental results for the copper cylindrical samples.
Keywords
Boundary element method (BEM); magnetic polarization tensor; magnetic induction; dipole approximation
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
