Numerical calculations of the acoustic properties of the 1-3 composite transducers for medical applications

Author

Nowicki, A. ; Kycia, K. ; Hien, T.D. ; Gajl, O. ; Kleiber, M.

Author_Institution

Inst. of Fundamental Technol. Res., Polish Acad. of Sci., Warsaw, Poland

Volume

2

fYear

1995

fDate

7-10 Nov 1995

Firstpage

1041

Abstract

The 1-3 composite transducers are superior to their piezoceramic counterparts in terms of a good acoustic matching to the biological tissue and higher electromechanical coupling coefficient with reduced impedance with no loss of sensitivity. Numerical calculations based on finite element formulation are given. Due to the large number of degrees of freedom the homogenisation process of the fundamental composite unit cell was introduced

Keywords

acoustic impedance; biomedical equipment; biomedical ultrasonics; composite materials; finite element analysis; lead compounds; piezoceramics; piezoelectric transducers; ultrasonic transducers; 1-3 composite transducers; PZT; PZT ceramic transducers; PbZrO3TiO3; acoustic matching; acoustic properties; biological tissue; degrees of freedom; electromechanical coupling coefficient; finite element formulation; fundamental composite unit cell; homogenisation process; impedance; medical applications; numerical calculation; piezoceramic counterparts; sensitivity; Acoustic measurements; Acoustic transducers; Biomedical acoustics; Biomedical transducers; Ceramics; Composite materials; Impedance; Medical services; Solids; Tensile stress;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE

Conference_Location

Seattle, WA

ISSN

1051-0117

Print_ISBN

0-7803-2940-6

Type

conf

DOI

10.1109/ULTSYM.1995.495741

Filename

495741