Analysis of ultrasonic transducers with fractal architecture

L. Orr, A.J. Mulholland, R.L. O'Leary, G. Hayward

Research output: Contribution to journalArticle

7 Citations (Scopus)
63 Downloads (Pure)

Abstract

Ultrasonic transducers composed of a periodic piezoelectric composite are generally accepted as the design of choice in many applications. Their architecture is normally very regular and this is due to manufacturing constraints rather than performance optimisation. Many of these manufacturing restrictions no longer hold due to new production methods such as computer controlled, laser cutting, and so there is now freedom to investigate new types of geometry. In this paper, the plane wave expansion model is utilised to investigate the behaviour of a transducer with a self-similar architecture. The Cantor set is utilised to design a 2-2 conguration, and a 1-3 conguration is investigated with a Sierpinski Carpet geometry.
Original languageEnglish
Pages (from-to)333-349
Number of pages17
JournalFractals
Volume16
Issue number4
DOIs
Publication statusPublished - Dec 2008

Keywords

  • fractal
  • ultrasonic transducer
  • plane wave expansion

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