Accession Number : ADD018070

Title :   Omnidirectional Ultrasonic Microprobe Hydrophone.

Descriptive Note : Patent Application, Filed 29 May 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Moffett, Mark B

PDF Url : ADD018070

Report Date : 29 May 1996

Pagination or Media Count : 24

Abstract : An omnidirectional ultrasonic microprobe hydrophone is disclosed. Applications include underwater mine detection, explosive shock testing, high wave number measurements, medical imaging, and therapeutic systems. The apparatus includes at least two lead zirconate titanate (PZT) pressure sensing elements having a plurality of columnar voids formed therein. The pressure sensing elements are deposited on a metallic or nonmetallic substrate which provides mechanical support for the microprobe hydrophone. Electrical connection to the pressure sensing elements is made by deposition of conductors and insulators on the substrate material. Wire bonds are used to attach wire leads for connection to a supporting structure containing a preamplifier. Line arrays and planar arrays of microprobe hydrophone elements are also disclosed. An omnidirectional ultrasonic microprobe hydrophone is disclosed.

Descriptors :   *PATENT APPLICATIONS, *HYDROPHONES, *MICROPROBES, FREQUENCY, METALS, MEASUREMENT, MECHANICAL PROPERTIES, PREAMPLIFIERS, INSULATION, WIRE, MINE DETECTION, ARRAYS, SUBSTRATES, X RAYS, VOIDS, EXPLOSIVES, NONMETALS, DEPOSITION, ULTRASONICS, PLANAR STRUCTURES, PRESSURE, THERAPY, BONDING, LINEAR ARRAYS, MEDICAL SERVICES, SHOCK TESTS, RADIOGRAPHY, ELECTRIC CONDUCTORS, UNDERWATER MINES, OMNIDIRECTIONAL

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE