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: Contribution to conferencePaper

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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
Pages1073-1076
Number of pages4
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
CountryNetherlands
CityRotterdam
Period18/09/0521/09/05

Keywords

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

Cite this

O'Leary, R. L., Parr, A. C. S., Troge, A., Pethrick, R. A., & Hayward, G. (2006). Performance of periodic piezoelectric composite arrays incorporating a passive phase exhibiting anisotropic properties. 1073-1076. Paper presented at 2005 IEEE International Ultrasonics Symosium, Rotterdam, Netherlands. https://doi.org/10.1109/ULTSYM.2005.1603036