Accession Number:

ADD013926

Title:

Broadband, Acoustically Transparent, Nonresonant PVDF (Polyvinylidene Fluoride) Hydrophone.

Descriptive Note:

Patent, Filed 7 Apr 86, patented 6 Dec 88,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

1988-12-06

Pagination or Media Count:

7.0

Abstract:

An acoustically transparent voided, polyvinylidene fluoride PVDF hydrophone made of material whose impedance matches the characteristic acoustic impedance rho c of sea water, having drastically reduced diffraction and resonance effects. The frequency response is thus flat at frequencies less than one-half elastic wavelength in the PVDF material. An array of such hydrophones in front of a projector saves space without affecting projector performance. Patent. fr

Subject Categories:

  • Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE