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

8 Citations (Scopus)

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.
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

Fingerprint

composite materials
polymers
elastic properties
apertures
shear
optimization
sensitivity

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
O'Leary, R.L. ; Parr, A.C.S. ; Troge, A. ; Pethrick, R.A. ; Hayward, G. / Performance of periodic piezoelectric composite arrays incorporating a passive phase exhibiting anisotropic properties. Paper presented at 2005 IEEE International Ultrasonics Symosium, Rotterdam, Netherlands.4 p.
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O'Leary, RL, Parr, ACS, Troge, A, Pethrick, RA & Hayward, G 2006, 'Performance of periodic piezoelectric composite arrays incorporating a passive phase exhibiting anisotropic properties' Paper presented at 2005 IEEE International Ultrasonics Symosium, Rotterdam, Netherlands, 18/09/05 - 21/09/05, pp. 1073-1076. https://doi.org/10.1109/ULTSYM.2005.1603036

Performance of periodic piezoelectric composite arrays incorporating a passive phase exhibiting anisotropic properties. / O'Leary, R.L.; Parr, A.C.S.; Troge, A.; Pethrick, R.A.; Hayward, G.

2006. 1073-1076 Paper presented at 2005 IEEE International Ultrasonics Symosium, Rotterdam, Netherlands.

Research output: Contribution to conferencePaper

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AB - 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.

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O'Leary RL, Parr ACS, Troge A, Pethrick RA, Hayward G. Performance of periodic piezoelectric composite arrays incorporating a passive phase exhibiting anisotropic properties. 2006. Paper presented at 2005 IEEE International Ultrasonics Symosium, Rotterdam, Netherlands. https://doi.org/10.1109/ULTSYM.2005.1603036