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Effectiveness of Electromagnetic-Acoustic Excitation of the Lamb Waves for Various Conducting Layer Thickness

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Abstract

The effectiveness of exciting the Lamb waves in realizing one of the possible variants of the electromagnetic-acoustic (EMA) conversion whose feature is the interaction between eddy currents induced in a plane layer and a nonuniform magnetic field generated by a direct current owing through the layer is considered. Simple relations between the EMA coupling coefficients are obtained in two limiting cases: when the thickness of the electrically conducting part of the layer is either much greater or much less than the skin-layer depth.

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Authors and Affiliations

  1. Institute of Metal Physics, Ural Division, Russian Academy of Sciences, Yekaterinburg, Russia

    D. V. Perov

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  1. D. V. Perov
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Perov, D.V. Effectiveness of Electromagnetic-Acoustic Excitation of the Lamb Waves for Various Conducting Layer Thickness. Russian Journal of Nondestructive Testing 39, 201–209 (2003). https://doi.org/10.1023/B:RUNT.0000009073.61513.2a

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  • DOI: https://doi.org/10.1023/B:RUNT.0000009073.61513.2a

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