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Resonant modes, acoustic impedance, and surface vibration profiles of periodic piezoceramic polymer composite plates

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3 Author(s)
X. Geng ; Mater. Res. Lab., Pennsylvania State Univ., University Park, PA, USA ; Q. M. Zhang ; J. Yuan

In this paper, the results of a combined analytical and experimental investigation of many properties, such as the resonant modes, the acoustic impedance, and the surface vibration profile of a periodic piezocomposite plate under different boundary conditions (both in air and in fluid), are presented. Due to the approach in the analysis model, we can quantitatively predict how various modes and their coupling to the thickness resonance change as the aspect ratio of the ceramic plate changes. It is also shown that the input acoustic impedance between a fluid or a solid medium and a composite is dispersive and depends on the medium. These findings will have important implications to the design of the composite, matching layer and backing for a composite ultrasonic transducer

Published in:

Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on  (Volume:2 )

Date of Conference:

18-21 Aug 1996