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Volume 7, issue 2 | Copyright
J. Sens. Sens. Syst., 7, 453-459, 2018
https://doi.org/10.5194/jsss-7-453-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Regular research article 27 Jul 2018

Regular research article | 27 Jul 2018

Comparison of defect detection limits in Lorentz force eddy current testing and classical eddy current testing

Jan Marc Otterbach1, Reinhard Schmidt1, Hartmut Brauer1, Marek Ziolkowski1,2, and Hannes Töpfer1 Jan Marc Otterbach et al.
  • 1Advanced Electromagnetics Group, Technische Universität Ilmenau, Helmholtzplatz 2, 98693 Ilmenau, Germany
  • 2Applied Informatics Group, West Pomeranian University of Technology, Sikorskiego 37, 70313 Szczecin, Poland

Abstract. Lorentz force eddy current testing (LET) is a motion-induced eddy current testing method in the framework of nondestructive testing. In this study, we address the question of how this method is classified in comparison with a commercial eddy current testing (ECT) measurement device ELOTEST N300 in combination with the probe PKA48 from Rohmann GmbH. Therefore, measurements using both methods are performed and evaluated. Based on the measurement results, the corresponding defect detection limits, i.e., up to which depth the defect can be detected, are determined and discussed. For that reason, the excitation frequency spectrum of the induced eddy currents in the case of LET is considered.

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Lorentz force eddy current testing (LET) is a motion-induced eddy current testing method in the framework of nondestructive testing. In this study, we address the question of how this method is classified in comparison with a commercial eddy current testing (ECT) device. Therefore, measurements using both methods are performed and evaluated. Based on the measurement results, the corresponding defect detection limits are determined and discussed.
Lorentz force eddy current testing (LET) is a motion-induced eddy current testing method in the...
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