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Proceedings Paper

Underwater evaluation of piezocomposite panels as active surfaces
Author(s): Robert Y. Ting; Thomas R. Howarth; Richard L. Gentilman
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Paper Abstract

A new class of composite materials designated as the 1-3 piezocomposite is being investigated for potential use in underwater smart material structures. In-water acoustical properties of new 1-3 composite panels were examined experimentally as a function of temperature, pressure and frequency. The measured transmitting voltage response (TVR) showed the existence of parasitic modes in the composite panel in addition to the expected thickness mode. The effect of underwater explosive shock on the TVR showed no detrimental effects in mechanical structure or acoustical performance of the piezocomposite panel. The free-field voltage sensitivity was constant at -185 dB referenced to 1 volt per micropascal over the testing frequency range. Linearity with electrical drive level and pressure stability of the 1-3 piezocomposites have also been established with the present choice of ceramic-polymer components. These results demonstrated that this new material is potentially used for applications of both large-area actuators and sensors in forming active surfaces of new smart structures.

Paper Details

Date Published: 1 May 1996
PDF: 8 pages
Proc. SPIE 2721, Smart Structures and Materials 1996: Industrial and Commercial Applications of Smart Structures Technologies, (1 May 1996); doi: 10.1117/12.239128
Show Author Affiliations
Robert Y. Ting, Naval Undersea Warfare Ctr. (United States)
Thomas R. Howarth, Naval Undersea Warfare Ctr. (United States)
Richard L. Gentilman, Materials Systems Inc. (United States)


Published in SPIE Proceedings Vol. 2721:
Smart Structures and Materials 1996: Industrial and Commercial Applications of Smart Structures Technologies
C. Robert Crowe, Editor(s)

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