Performance of periodic piezoelectric composite arrays incorporating a passive phase exhibiting anisotropic properties

R.L. O'Leary, A.C.S. Parr, A. Troge, R.A. Pethrick, G. Hayward

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

8 Citations (Scopus)
62 Downloads (Pure)

Abstract

This paper explores the minimisation of interelement cross talk in 1-D and 2-D periodic composite array structures through the incorporation of a passive phase exhibiting anisotropic elastic properties. Initially the PZFlex finite element code was used to monitor array aperture response as a function of material properties. It is shown that in array structures comprising passive polymer materials possessing low longitudinal loss and high shear loss, inter-element mechanical cross talk is reduced, without a concomitant reduction in element sensitivity. A number of polymer materials with the desired properties were synthesised and their elastic character confirmed through a program of materials characterisation. Finally, a range of experimental devices exhibiting improved directional response, as a result of a significant reduction in interelement cross talk, are presented and the predicted array characteristics are shown to compare favourably in each case.
Original languageEnglish
Title of host publicationIEEE Ultrasonics Symposium, 2005
Place of PublicationPiscataway, NJ.
PublisherIEEE
Pages1073-1076
Number of pages4
ISBN (Print)0780393821
DOIs
Publication statusPublished - 6 Mar 2006
Event2005 IEEE International Ultrasonics Symosium - Rotterdam, Netherlands
Duration: 18 Sep 200521 Sep 2005

Conference

Conference2005 IEEE International Ultrasonics Symosium
Country/TerritoryNetherlands
CityRotterdam
Period18/09/0521/09/05

Keywords

  • anisotropic magnetoresistance
  • apertures
  • chemistry
  • finite element methods
  • phased arrays

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