Mechanical properties of compliant piezoelectric composites

Steven P. Marra, Kaliat T. Ramesh, Andrew Douglas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The potential applications of pure piezoelectric ceramics as embedded sensors are limited by the stiffness and brittleness of these materials. To achieve a more compliant sensor, composites have been developed which incorporate calcium-modified lead titanate particles in an polymer matrix. Such compliant sensors, in thin film form, may be useful within thick composite structures such as tank hulls and helicopter blades. The mechanical response of 0 - 3 composite films of Ca-modified lead titanate in polyvinylidene fluoride-trifluoroethylene and Epon828 epoxy matrices is investigated in this work. The electrical response of these composites is currently being studied by Wenger et al. The viscoelastic properties of these thin film composites with various volume fractions have been measured over a wide range of frequencies and temperatures. The observed mechanical response of these heterogeneous materials is compared with the predictions of several simple models for such composites. Preliminary piezoelectric results are also presented.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages148-159
Number of pages12
ISBN (Print)0819424536
StatePublished - 1997
EventSmart Structures and Materials 1997: Smart Materials Technologies - San Diego, CA, USA
Duration: Mar 3 1997Mar 4 1997

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume3040
ISSN (Print)0277-786X

Conference

ConferenceSmart Structures and Materials 1997: Smart Materials Technologies
CitySan Diego, CA, USA
Period3/3/973/4/97

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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