Velocity-Dependent Lorentz Force Evaluation: A Simulation Study

A velocity-dependent Lorentz force evaluation is proposed to improve the defect depth estimation. Data sets of a specimen with stacked aluminum sheets and a cylindrical permanent magnet, with different defect shapes, depths, and two velocities, simulated by the finite-element method, are investigate...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on magnetics 2019-06, Vol.55 (6), p.1-4
Main Authors: Dolker, Eva-Maria, Schmidt, Reinhard, Brauer, Hartmut, Haueisen, Jens
Format: Article
Language:English
Subjects:
Aluminum
Defects
Depth detection
Eddy currents
Estimation
Finite element method
Lorentz covariance
Lorentz force
Magnetism
motion-induced eddy current evaluation
nondestructive evaluation
Permanent magnets
Perturbation methods
Shape
Skin
Velocity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A velocity-dependent Lorentz force evaluation is proposed to improve the defect depth estimation. Data sets of a specimen with stacked aluminum sheets and a cylindrical permanent magnet, with different defect shapes, depths, and two velocities, simulated by the finite-element method, are investigated. Shifts and amplitude changes of Lorentz force perturbation signals at a high velocity ( v=10\,\,\text{m} /s) in comparison to a low velocity ( v=0.1 m/s) can be used to determine the defect depth.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2019.2901579