Accession Number : ADD008601

Title :   A Single Element Cantilever Mounted Shear Wave Transducer.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Brunson,Burlie A

Report Date : 11 Jun 1981

Pagination or Media Count : 10

Abstract : The present invention relates to a single element cantilever-mounted acoustic transducer for measuring shear wave attenuation in sediments. Such a transducer takes advantage of the transverse vibration of a piezoceramic bimorph element mounted as a cantilever on a heavy slug. A gasket material between the slug and an inner holding tube assists in avoiding the propagation of undesirable compressional wave energy into transmission medium surrounding the transducer. Electrical isolation is achieved by wrapping the inner tube with a ground shield to which the ground wire is attached. A second layer of gasket material between the inner and an outer tube further inhibits the propagation of compressional wave energy into the transmission medium. A flexible potting compound seals the open end of the tubes including the bimorph element and serves as the active face of the transducer.

Descriptors :   *Patent applications, *Sonar transducers, *Sedimentation, *Shear properties, Piezoelectric transducers, Flexible structures, Potting compounds, Seals(Stoppers), Inner tubes, Transmittance, Electrical insulation, Transverse, Vibration, Ocean bottom soils, Specifications

Subject Categories : Electrical and Electronic Equipment
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE