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Characteristics of antisymmetric Lamb waves of zeroth order in the structure "piezoelectric plate - nanocomposite polymeric layer - liquid"


I. . Kuznetsova 1, B. D. Zaitsev 2, I. . Borodina2 , . . Shikhabudinov 2, A. S. Kuznetsova 2, A. A. Teplykh 2


1Kotel'nikov Institute of Radio-engineering and Electronics of RAS

2 Kotel'nikov Institute of Radio-engineering and Electronics of RAS, Saratov branch


Received July 25, 2012

Abstract: In the paper the influence of the nanocomposite polymeric layer on value of radiation losses accompanying the propagation of antisymmetric Lamb wave in piezoelectric plate bordering with liquid is investigated. It is shown that the using of matching layer leads to the increasing of effectiveness of bulk wave radiation into liquid at the propagation of A0 wave. The optimization of the acoustical characteristics of matching layer and the geometry of the structure is carried out. The obtained theoretical data are confirmed by the experimental results. The presented structures can be useful for the development of the waveguide hydroacoustic emitters.

Key words: nanocomposite polymeric material, Lamb waves, piezoelectric plates, hydroacoustic emitters.