<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The magnetic flux leakage (MFL) technique is extensively used for detection of flaws as well as for evaluation of their dimensions in ferromagnetic materials. However, proper analysis of the MFL signal is hindered by the MFL sensor velocity causing distortions of this signal. Traditionally measured components of the MFL signal are particularly sensitive to the scanning velocity. In this paper, an another signal – the gradient of the normal component of magnetic flux density – was proposed as it is less sensitive to the scanning velocity. Results obtained for scans of the steel plate with artificially manufactured flaws confirm this statement.</p></abstract>

The magnetic flux leakage (MFL) technique is extensively used for detection of flaws as well as for evaluation of their dimensions in ferromagnetic materials. However, proper analysis of the MFL signal is hindered by the MFL sensor velocity causing distortions of this signal. Traditionally measured components of the MFL signal are particularly sensitive to the scanning velocity. In this paper, an another signal – the gradient of the normal component of magnetic flux density – was proposed as it is less sensitive to the scanning velocity. Results obtained for scans of the steel plate with artificially manufactured flaws confirm this statement.

Magnetic field gradient as the most useful signal for detection of flaws using MFL technique

Faculty of Applied Physics and Mathematics

Journal of Electrical Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The magnetic flux leakage (MFL) technique is extensively used for detection of flaws as well as for evaluation of their dimensions in ferromagnetic materials....

Magnetic field gradient as the most useful signal for detection of flaws using MFL technique

Publié en ligne: 31 déc. 2018

Pages: 422 - 425

Reçu: 13 févr. 2018

DOI: https://doi.org/10.2478/jee-2018-0065

Mots clés
gradient of magnetic field, magnetic flux leakage, velocity-induced eddy currents

© 2018 Zbigniew Usarek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Magnetic field gradient as the most useful signal for detection of flaws using MFL technique

Publié en ligne: 31 déc. 2018

Pages: 422 - 425

Reçu: 13 févr. 2018

DOI: https://doi.org/10.2478/jee-2018-0065

Mots clésgradient of magnetic field, magnetic flux leakage, velocity-induced eddy currents

© 2018 Zbigniew Usarek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
gradient of magnetic field, magnetic flux leakage, velocity-induced eddy currents