Ferroelectric Ceramic/Polymer Bimorph Sensor for Strain Measurement in Laminates.

Abstract

Flexural (or bending) piezoelectricity of a piezoelectric monomorph film may be enhanced by bonding two or even a number of multiple poled films to form a bimorph or a multimorph. The compliance of ceramic/polymer composite is generally greater than piezoceramics. We have produced calcium modified lead titanate, PTCa/copolymer of vinylidene fluoride trifluoroethylene, P(VDF-TrFE) and PTCa/Epoxy composites and have successfiilly embedded such composite films in glass-laminate structure and detected acoustic emission signals. It is our objective now to produce bimorphs and multimorphs with these two different composite films of mixed (0-3 and 1-3) connectivity and provide surface bonded and embedded sensors to monitor strain in-situ and also to use them as ultrasonic transducers.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1996
Accession Number
ADA304292

Entities

People

  • D. K. Das-gupia
  • M. P. Wenger

Organizations

  • Bangor University

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Acoustic Emissions
  • Composite Material Fabrication
  • Composite Materials
  • Electronic Mail
  • Epoxy Composites
  • Fabrication
  • Frequency
  • Frequency Response
  • Laminated Glass
  • Laminates
  • Lead Titanates
  • Literature Surveys
  • Materials Processing
  • Piezoelectricity
  • Polymer Matrix Composites
  • Resonant Frequency

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene
  • Microelectronics - Microelectromechanical Systems