Piezoceramic-Polymer Composites for Underwater Transducer Applications.

Abstract

A piezocomposite structure was prepared in a 1-1-3 configuration by casting a compressible epoxy between lead zirconate titanate (PZT) rods and a stiff polymer preform matrix. A corrugated polymer perform was used to provide structural stability under high hydrostatic pressures. The changes of piezoelectric properties with pressure and temperature were very small. To enhance the piezoelectric responsivity, the 1-1-3 composite is further modified to have PZT rods extended beyond the epoxy matrix. The pressure applied to the cover plate is then transferred only to PZT rods and the pressure on the PZT rods is amplified by the reciprocal of the PZT volume fraction of the composite. As a result, a figure of merit can be achieved to more than 10,000 x 10(exp -15) (sq m/N).

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Document Details

Document Type
Technical Report
Publication Date
Jun 28, 1996
Accession Number
ADA310873

Entities

People

  • Changyoung Kim
  • D. Lewis Iii
  • Michaël Kahn

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Bulk Modulus
  • Coefficients
  • Composite Materials
  • Equations
  • Figure Of Merit
  • Fluid Mechanics
  • Glass Fibers
  • Hydrostatic Pressure
  • Lead Zirconate Titanates
  • Materials
  • Materials Science
  • Measurement
  • Mechanics
  • Military Research
  • Polymer Matrix Composites
  • Static Pressure
  • Transducers

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Reinforced Composite Materials