Assessment of different pillar geometries for 1-3 composite transducers using finite element analysis

Author

Hossack, J.A. ; Hayward, G.

Author_Institution

Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK

fYear

1990

fDate

4-7 Dec 1990

Firstpage

389

Abstract

Composite piezoelectric transducers, comprising piezoceramic pillars aligned within a polymer matrix, exhibit a high electromechanical coupling coefficient and a low acoustic impedance. Finite element analysis is used to investigate the dependence of device performance, in terms of electromechanical efficiency and vibrational uniformity, on pillar geometry. Results obtained by using alternative pillar shapes, including circular, square, and triangular geometries, are discussed, and an overall design strategy is formulated

Keywords

acoustic impedance; electromechanical effects; filled polymers; finite element analysis; piezoelectric transducers; ultrasonic transducers; 1-3 connectivity; acoustic impedance; composite piezoelectric transducers; design strategy; electromechanical coupling coefficient; finite element analysis; piezoceramic pillars; pillar geometries; pillar shapes; polymer matrix; vibrational uniformity; Ceramics; Coupled mode analysis; Equations; Finite element methods; Geometry; Performance analysis; RLC circuits; Resonance; Resonant frequency; Transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1990. Proceedings., IEEE 1990

Conference_Location

Honolulu, HI

Type

conf

DOI

10.1109/ULTSYM.1990.171393

Filename

171393