Title :
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
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;
Conference_Titel :
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990
Conference_Location :
Honolulu, HI
DOI :
10.1109/ULTSYM.1990.171393
