Role of matrix porosity and poisson's ratio in the design of high-sensitivity piezocomposite transducers

Pieter J. Swart, Marco Avellaneda

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

Abstract

The inclusion of piezoceramic rods in a passive polymer can highly enhance the piezoelectric effect - a fact which has been exploited in the manufacturing of sensitive transducers. We analyze this phenomenon from the point of view of the theory of composite materials, focusing on the evaluation of dh, the electro-acoustic coupling coefficient, dhgh, the hydrophone figure of merit, and kh, the corresponding coupling factor measuring electro-mechanical energy conversion. In the limit of large elastic contrast (soft matrix, hard ceramic), this allows for a clear explanation of the decoupling effect of the composite on the electro-acoustic coupling coefficient, as well as the role played by the porosity and Poisson's ratio of the matrix phase.

Original languageEnglish (US)
Title of host publicationAmerican Society of Mechanical Engineers, Aerospace Division (Publication) AD
PublisherASME
Pages59-66
Number of pages8
Volume45
StatePublished - 1994
EventProceedings of the 1994 International Mechanical Engineering Congress and Exposition - Chicago, IL, USA
Duration: Nov 6 1994Nov 11 1994

Other

OtherProceedings of the 1994 International Mechanical Engineering Congress and Exposition
CityChicago, IL, USA
Period11/6/9411/11/94

Fingerprint

acoustic coupling
Poisson ratio
transducer
coupling coefficients
Transducers
transducers
acoustics
Porosity
Acoustics
porosity
Hydrophones
matrix
hydrophone
composite materials
Piezoelectricity
hydrophones
sensitivity
Composite materials
energy conversion
matrices

ASJC Scopus subject areas

  • Space and Planetary Science
  • Mechanical Engineering

Cite this

Swart, P. J., & Avellaneda, M. (1994). Role of matrix porosity and poisson's ratio in the design of high-sensitivity piezocomposite transducers. In American Society of Mechanical Engineers, Aerospace Division (Publication) AD (Vol. 45, pp. 59-66). ASME.

Role of matrix porosity and poisson's ratio in the design of high-sensitivity piezocomposite transducers. / Swart, Pieter J.; Avellaneda, Marco.

American Society of Mechanical Engineers, Aerospace Division (Publication) AD. Vol. 45 ASME, 1994. p. 59-66.

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

Swart, PJ & Avellaneda, M 1994, Role of matrix porosity and poisson's ratio in the design of high-sensitivity piezocomposite transducers. in American Society of Mechanical Engineers, Aerospace Division (Publication) AD. vol. 45, ASME, pp. 59-66, Proceedings of the 1994 International Mechanical Engineering Congress and Exposition, Chicago, IL, USA, 11/6/94.
Swart PJ, Avellaneda M. Role of matrix porosity and poisson's ratio in the design of high-sensitivity piezocomposite transducers. In American Society of Mechanical Engineers, Aerospace Division (Publication) AD. Vol. 45. ASME. 1994. p. 59-66
Swart, Pieter J. ; Avellaneda, Marco. / Role of matrix porosity and poisson's ratio in the design of high-sensitivity piezocomposite transducers. American Society of Mechanical Engineers, Aerospace Division (Publication) AD. Vol. 45 ASME, 1994. pp. 59-66
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