Accession Number : ADD003483

Title :   Specification Navy Case Number 60,057.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Shirley,Donald J

Report Date : 02 Nov 1976

Pagination or Media Count : 15

Abstract : An improved transducer for generating and detecting shear waves using piezoelectric bimorph elements is proposed. A plurality of pairs of bimorph elements are formed by rigidly attaching together two individual lengths of piezoelectric material with each dimensioned to provide a length and width substantially greater than its thickness. The plurality of bimorph pairs are mounted in a configuration such that each pair is separated by a layer of high compliance material with the electrical polarization of each piezoelectric element pointing in the same direction. Electrical potential applied simultaneously to the electrodes of the individual pairs causes the entire end face of the transducer to perform a shearing motion which will generate or detect acoustic waves in materials in contact with the face.

Descriptors :   *Patent applications, *Piezoelectric transducers, *Electroacoustic transducers, Acoustic waves, Shear properties, Solids

Subject Categories : Electrical and Electronic Equipment
      Acoustics
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE