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Effects of coupled vibrations on the acoustical performance of underwater cylindrical shell transducers
Boris Aronov1, David A Brown, Corey L Bachand
1BTech Acoustics, LLC, Acoustics Research Laboratory, Advanced Technology and Manufacturing Center, and Department of Electrical and Computer Engineering, University of Massachusetts Dartmouth, 151 Martine Street, Fall River, Massachusetts 02723, USA.
Abstract:
An experimental investigation of the effects of coupled vibrations on the acoustical performance of underwater transducers made from radially polarized, thin walled, air-backed, piezoelectric cylinders as a function of their height-to-diameter aspect ratio is presented. Characteristics of the frequency response, directivity patterns, and effectiveness of the transducers are considered in comparison with analogous characteristics for the transducers comprised of mechanically separated rings, otherwise having the same geometry. Recommendations are made on the application of cylindrical piezoelectric elements with different aspect ratios for underwater transducer applications.
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