The use of lamb waves for measuring the thicknesses of thin metal films

An experimental device that allows the determination of the thicknesses of thin metal films in the micron range is described. The method is based on the use of the dependence of the phase velocity of harmonic antisymmetric Lamb waves that propagate along a film on its thickness. The measurement accu...

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Veröffentlicht in:Instruments and experimental techniques (New York) 2017-03, Vol.60 (2), p.284-286
Hauptverfasser: Tolipov, Kh. B., Kleshchev, D. G., Berezin, V. M.
Format: Artikel
Sprache:eng
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Zusammenfassung:An experimental device that allows the determination of the thicknesses of thin metal films in the micron range is described. The method is based on the use of the dependence of the phase velocity of harmonic antisymmetric Lamb waves that propagate along a film on its thickness. The measurement accuracy was 8% and was virtually independent of the film thickness.
ISSN:0020-4412
1608-3180
DOI:10.1134/S0020441217020142