ملخص: The effect of a perfectly elastic nonviscous nonconducting liquid on the characteristics of a zeroorder antisymmetric Lamb wave (the A 0 wave) in a 128YX LiNbO 3 plate, whose thickness is small compared to the wavelength, is studied both theoretically and experimentally. A method for calculating the velocity and attenuation of this wave depending on the value of the parameter hf( his the plate thickness and fis the wave frequency) is proposed. In addition, the characteristics of an A 0 wave in a piezoelectric plate that is in contact with two different perfectly elastic nonviscous nonconducting liquids on its two sides are investigated. A possibility for the development of a proximate analyzer of liquids on the basis of such a structure is indicated.

لغة: إنجليزية