Hydroacoustical emitter based on zero-order antisymmetric Lamb wave in a piezoelecrtric plate

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[1] Kuznetsova, Iren E.
[2] Zaitsev, Boris D.
[3] Borodina, Irina A.
[4] Teplykh, Andrey A.
[5] Kolesov, Vladimir V.
[6] Sknarya, Anatolii V.
[7] Petrova, Nadezhda G.
[8] Nosov, Aleksander V.
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| 1600年 / American Institute of Physics Inc.卷 / 112期
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A piezoelectric plate supporting the propagation of antisymmetric zero-order (A0) Lamb wave is proposed to be used as a hydroacoustical waveguide emitter that transmits a bulk acoustic wave into a liquid. The emitter's directional pattern has been theoretically and experimentally examined for a frequency band of 89-107 kHz. An angular acoustic beam scanning was revealed to be realized by varying the A0 wave frequency. It is shown that; unlike complicated emitting systems of phased array type; this nonmechanical scanning could be realized in a simple device. The obtained results are in a good agreement with the theoretical ones. © 2012 American Institute of Physics;
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