Resonant characteristics of piezoelectric composites: analysis of spurious modes in single and multi-element ultrasonic transducers

Author

Reynolds, P. ; Hyslop, J. ; Hayward, G.

Author_Institution

Weidlinger Associates Inc., Los Altos, CA, USA

Volume

2

fYear

2002

fDate

8-11 Oct. 2002

Firstpage

1157

Abstract

This paper examines in detail the generation of high frequency inter-pillar (lateral) resonances in 1-3 piezoelectric composites, through experiment and finite element analysis (FEA) with the PZFlex package, both in monolithically electroded composites and in multi-element arrays based on a 1-3 piezoelectric composite substrate. While thickness modes are accurately described by standing wave formation within the transducer, other interpillar modes will be clearly shown to be generated due to Lamb waves propagating through the substrate, between pillars and between elements in the single and multi-element cases respectively.

Keywords

composite materials; finite element analysis; piezoelectric materials; piezoelectric transducers; surface acoustic waves; ultrasonic transducers; Lamb wave; PZFlex package; finite element analysis; interpillar mode; multi-element ultrasonic transducer; piezoelectric composite; resonant characteristics; single-element ultrasonic transducer; spurious mode; standing wave; thickness mode; Ceramics; Finite element methods; Packaging; Piezoelectric transducers; Polymers; Resonance; Resonant frequency; Scattering; Ultrasonic imaging; Ultrasonic transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE

ISSN

1051-0117

Print_ISBN

0-7803-7582-3

Type

conf

DOI

10.1109/ULTSYM.2002.1192499

Filename

1192499