Broadband ultrasound transducers using effectively graded piezoelectric materials

Author

Yamada, Ken ; Sakamura, Jun-ichi ; Nakamura, Kiyoshi

Author_Institution

Dept. of Electr. & Commun. Eng., Tohoku Univ., Sendai, Japan

Volume

2

fYear

1998

fDate

1998

Firstpage

1085

Abstract

Broadband ultrasound transducers are presented that utilize piezoelectric materials having an effectively graded piezoelectric parameter and/or applied electric field. These transducers are constructed by forming a number of fine V-grooves on one surface of a piezoelectric plate. Broadband frequency characteristics of the proposed transducer is demonstrated through experiments of wave generation in water. The finite element method analysis has proved that even order resonance modes are also excited in the plate with a grooved configuration

Keywords

finite element analysis; piezoelectric transducers; ultrasonic transducers; underwater sound; V-grooves; applied electric field; broadband ultrasound transducers; effectively graded piezoelectric materials; effectively graded piezoelectric parameters; even order resonance modes; finite element method; grooved configuration; piezoelectric plate; water; wave generation; Acoustic pulses; Acoustic transducers; Character generation; Frequency; Piezoelectric materials; Piezoelectric transducers; Pulse generation; Stress; Ultrasonic imaging; Ultrasonic transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE

Conference_Location

Sendai

ISSN

1051-0117

Print_ISBN

0-7803-4095-7

Type

conf

DOI

10.1109/ULTSYM.1998.765018

Filename

765018