Hexagonal array structure for 2D NDE applications

Jerzy Dziewierz, Sivaram Nishal Ramadas, Anthony Gachagan, Richard O'Leary

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

1 Citation (Scopus)


This paper describes a combination of simulation and experimentation to evaluate the advantages offered by utilizing a hexagonal shaped array element in a 2D NDE array structure. The active material is a 1–3 connectivity piezoelectric composite structure incorporating triangular shaped pillars—each hexagonal array element comprising six triangular pillars. A combination of PZFlex, COMSOL and Matlab has been used to simulate the behavior of this device microstructure, for operation around 2.25 MHz, with unimodal behavior and low levels of mechanical cross-coupling predicted. Furthermore, the application of hexagonal array elements enables the array aperture to increase by approximately 30%, compared to a conventional orthogonal array matrix and hence will provide enhanced volumetric coverage and SNR. Prototype array configurations demonstrate good corroboration of the theoretically predicted mechanical cross-coupling between adjacent array elements.
Original languageEnglish
Title of host publicationReview of progress in quantitative nondestructive evaluation
Subtitle of host publicationAIP Conference Proceedings
EditorsD.O. Thompson, D.E. Chimenti
Place of PublicationMelville
Number of pages6
Publication statusPublished - 22 Feb 2010
Event36th Annual Review of Progress in Quantitative Nondestructive Evaluation - Kingston, Rhode Island, United States
Duration: 26 Jul 200931 Jul 2009

Publication series

Name AIP Conference Proceedings
PublisherAmerican Institute of Physics
ISSN (Print)0094-243X


Conference36th Annual Review of Progress in Quantitative Nondestructive Evaluation
Country/TerritoryUnited States
CityKingston, Rhode Island


  • 2D piezoelectric array
  • hexagonal elements
  • ultrasonic inspection
  • performance
  • transducer arrays


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