Version 1
: Received: 26 December 2021 / Approved: 27 December 2021 / Online: 27 December 2021 (13:53:33 CET)
How to cite:
Huang, R.; Lu, M.; Chen, Z.; Yin, W. Reduction of Coil-Crack Angle Sensitivity Effect Using a Novel Flux Feature of ACFM Technique. Preprints2021, 2021120431. https://doi.org/10.20944/preprints202112.0431.v1
Huang, R.; Lu, M.; Chen, Z.; Yin, W. Reduction of Coil-Crack Angle Sensitivity Effect Using a Novel Flux Feature of ACFM Technique. Preprints 2021, 2021120431. https://doi.org/10.20944/preprints202112.0431.v1
Huang, R.; Lu, M.; Chen, Z.; Yin, W. Reduction of Coil-Crack Angle Sensitivity Effect Using a Novel Flux Feature of ACFM Technique. Preprints2021, 2021120431. https://doi.org/10.20944/preprints202112.0431.v1
APA Style
Huang, R., Lu, M., Chen, Z., & Yin, W. (2021). Reduction of Coil-Crack Angle Sensitivity Effect Using a Novel Flux Feature of ACFM Technique. Preprints. https://doi.org/10.20944/preprints202112.0431.v1
Chicago/Turabian Style
Huang, R., Ziqi Chen and Wuliang Yin. 2021 "Reduction of Coil-Crack Angle Sensitivity Effect Using a Novel Flux Feature of ACFM Technique" Preprints. https://doi.org/10.20944/preprints202112.0431.v1
Abstract
Alternating current field measurement (ACFM) testing is one of promising techniques in the field of non-destructive testing with advantages of the non-contact capability and the reduction of lift-off effects. In this paper, a novel crack detection approach is proposed to reduce the effect of the angled crack (cack orientation) by using rotated ACFM techniques. The sensor probe is composed of an excitation coil and two receiving coils. Two receiving coils are orthogonally placed in the centre of the excitation coil where the magnetic field is measured. It is found that the change of the x component and the peak value of the z component of the magnetic field when the sensor probe rotates around a crack follows a sine wave shape. A customised accelerated finite element method solver programmed in MATLAB is adopted to simulate the performance of the designed sensor probe which can significantly improve the computation efficiency due to the small crack perturbation. The experiments have also been carried out to validate the simulations. It is found that the ratio between the z and x components of the magnetic field remains stable under various rotation angles. It shows the potential to estimate the depth of the crack from the ratio detected by combining the magnetic fields from both receiving coils (i.e., the x and z components of the magnetic field) using the rotated ACFM technique.
Keywords
Non-destructive testing; magnetic induction; crack detection; finite element method acceleration; conductive plate
Subject
Engineering, Electrical and Electronic Engineering
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.
