Accession Number : ADD010584
Title : A Piezoelectric Polymer Hydrophone.
Descriptive Note : Patent Application,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Henriquez,Theordore A ; Tims,Allan C
Report Date : 25 Aug 1983
Pagination or Media Count : 13
Abstract : One object of the invention is to provide a shock resistant hydrophone. Another object of the invention is to provide a hydrophone using a piezoelectric sensor element with a density approximating that of water. Yet a further object of this invention is to provide a hydrophone capable of broadband, high frequency operation. The invention is a hydrophone using a piezoelectric polymer such as polyvinylidene fluoride as the sensing element. The piezoelectric polymer is formed into a thin wall tube with deposited electrodes on the interior and exterior surfaces. An elastomer core fills the interior of the tube and provides radial compression against the interior of the tube.
Descriptors : *Patent applications, *Hydrophones, *Shock resistance, *Piezoelectric materials, *Polymers, Polyvinylidenes, Fluorides, Detectors, Tubular structures, Deposition, Electrodes, Cores, Elastomers, Fillers
Subject Categories : Plastics
Acoustic Detection and Detectors
Electricity and Magnetism
Distribution Statement : APPROVED FOR PUBLIC RELEASE