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ElectroComponent Science and Technology
Volume 5, Issue 3, Pages 149-157
http://dx.doi.org/10.1155/APEC.5.149

Underwater Acoustic Measurements on Polyvinylidene Fluoride Transducers

Electronic and Electrical Engineering Department, Loughborough University of Technology, Leicestershire, Loughborough, UK

Received 21 December 1977

Copyright © 1978 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Methods of making piezoelectric transducers from very thin sheets of polyvinylidene fluoride (PVDF) are discussed, together with techniques for calibrating these devices, particularly for underwater operation. Parameters measured include receiving response, source level, beamwidth, characteristic impedance and variation of impedance with frequency. Consideration is also given to the dependence of receiving response on the poling fields and temperatures used in making PVDF transducers. Because of their broadband response thin sheet PVDF transducers have been shown to be ideal for monitoring the true form of acoustic pulses underwater.