Uniform Induced Electromagnetic Features around Longitudinal and Transverse Cracks

DOI

10.2991/icaita-16.2016.83How to use a DOI?

Keywords

alternating electromagnetic field; ACFM; AC-MFL; longitudinal and transverse cracks

Abstract

Uniform alternating electromagnetic field will be induced in specimen with alternating current excitation. The distribution of induced field will be perturbed by the existence of crack. To study the perturbation feature caused by crack, the specimen containing longitudinal and transverse cracks are detected in the experiment in this paper. The experiment indicates that the longitudinal and transverse cracks can be both detected out in one scan. Furthermore, the simulation of steel and aluminum with longitudinal and transverse cracks are carried out to explain the phenomenon. The result in simulation indicates that while longitudinal and transverse cracks exist in the surface of specimens, the induced alternating magnetic field around the crack would leak out of the specimen, meanwhile, the induced alternating current field around the crack would be disturbed and generated perturbation magnetic field. The magnetic field signal picked above the crack included the leakage magnetic field signal and perturbation magnetic field signal.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jiuhao Ge
AU  - Wei Li
AU  - Yanyun Wu
AU  - Xinan Yuan
PY  - 2016/01
DA  - 2016/01
TI  - Uniform Induced Electromagnetic Features around Longitudinal and Transverse Cracks
BT  - Proceedings of the 2016 International Conference on Artificial Intelligence: Technologies and Applications
PB  - Atlantis Press
SP  - 337
EP  - 340
SN  - 1951-6851
UR  - https://doi.org/10.2991/icaita-16.2016.83
DO  - 10.2991/icaita-16.2016.83
ID  - Ge2016/01
ER  -