Equivalent network analysis of piezoelectrically-graded broadband ultrasound transducers

Author

Ymada, K. ; Sakamura, Jun-ichi ; Nakamura, Kiyoshi

Author_Institution

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

Volume

2

fYear

1999

fDate

1999

Firstpage

1119

Abstract

Performance of ultrasound transducers composed of a piezoelectric plate having a graded parameter is studied theoretically by using an equivalent network model formerly presented by the authors. Transfer functions and impulse responses are calculated for a linearly and an exponentially graded piezoceramic transducer model which has a water load on one side and a matched backing on the other side. The theoretical examinations made for the plates with some typical distributions of the piezoelectric constant e₃₃ clearly show the effectiveness of the functionally-graded plates. Some results are also presented for the case that the transducers are excited by a one-cycle sinusoidal electric pulse

Keywords

network analysis; piezoceramics; piezoelectric transducers; transient response; ultrasonic transducers; equivalent network analysis; equivalent network model; exponentially graded piezoceramic transducer model; functionally-graded plates; graded parameter; impulse response; linearly graded piezoceramic transducer model; matched backing; one-cycle sinusoidal electric pulse; piezoelectric constant; piezoelectric plate; piezoelectrically-graded broadband ultrasound transducers; transfer functions; ultrasound transducers; water load; Acoustic pulses; Acoustic transducers; Frequency; Piezoelectric materials; Piezoelectric transducers; Stress; Transfer functions; Ultrasonic imaging; Ultrasonic transducers; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE

Conference_Location

Caesars Tahoe, NV

ISSN

1051-0117

Print_ISBN

0-7803-5722-1

Type

conf

DOI

10.1109/ULTSYM.1999.849195

Filename

849195