Pulsed Magnetic Thickness Measurment of Metal Coatings

We present the results of studying the characteristics of measuring transducers of magnetic-induction thickness gages using harmonic excitation currents for the case of monitoring electrically conductive coatings. Based on these transducers, we propose and describe in detail a conversion algorithm t...

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Bibliographic Details
Published in:Russian journal of nondestructive testing 2021-09, Vol.57 (9), p.806-813
Main Authors: Syasko, V. A., Vasilev, A. Y.
Format: Article
Language:English
Subjects:
Algorithms
Characterization and Evaluation of Materials
Chemistry and Materials Science
Electromagnetic Methods
Ferromagnetism
Gauges
Harmonic excitation
Magnetic induction
Materials Science
Metal coatings
Structural Materials
Thickness measurement
Transducers
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Summary:We present the results of studying the characteristics of measuring transducers of magnetic-induction thickness gages using harmonic excitation currents for the case of monitoring electrically conductive coatings. Based on these transducers, we propose and describe in detail a conversion algorithm that assumes pulsed excitation of magnetic field and the use of the induced EMF area as a primary informative parameter when suppressing the influence of power-supply and pulse noises, used in commercial thickness gages of metal nonferromagnetic coatings on ferromagnetic bases.
ISSN:1061-8309
1608-3385
DOI:10.1134/S1061830921090102