A 2D ultrasonic array design incorporating hexagonal-shaped elements for NDE applications

J. Dziewierz, S.N. Ramadas, A. Gachagan, R.L. O'Leary, G. Hayward

Research output: Contribution to conferencePaper

2 Citations (Scopus)
119 Downloads (Pure)

Abstract

Contemporary 2D Ultrasonic arrays suffer from low SNR and limited steering capabilities. Yet, there is a great desire in the industry to increase the operational frequency, in order to enhance their volumetric imaging resolution. State-of-the art arrays use an orthogonal matrix of rectangular elements as this is a natural step forward from the conventional 1D array structure. The objective of this work is to evaluate properties of triangular, rather than rectangular ceramic pillars in a 1-3 connectivity piezoelectric composite for application in a hexagonal-element 2D array. A 3MHz prototype device exploiting new hexagonal substructure have been manufactured. Measured mechanical cross-coupling level is -21.9dB between neighbouring hexagonal elements, providing validation of simulation result. Corroboration between measured and FE modelled device behaviour is demonstrated.
Original languageEnglish
Pages422-425
Number of pages4
DOIs
Publication statusPublished - Jan 2010
Event2009 IEEE Ultrasonics Symposium - Rome, Italy
Duration: 20 Sep 200923 Sep 2009

Conference

Conference2009 IEEE Ultrasonics Symposium
CountryItaly
CityRome
Period20/09/0923/09/09

Keywords

  • acoustic arrays
  • apertures
  • ultrasonic array design
  • ceramics

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    Dziewierz, J., Ramadas, S. N., Gachagan, A., O'Leary, R. L., & Hayward, G. (2010). A 2D ultrasonic array design incorporating hexagonal-shaped elements for NDE applications. 422-425. Paper presented at 2009 IEEE Ultrasonics Symposium, Rome, Italy. https://doi.org/10.1109/ULTSYM.2009.5441447