Optimum active area on the performance of unturned P(VDF-TrFE) piezoelectric copolymer ultrasonic transducers

Author

Li, G.R. ; Lin, W. ; Wu, Y.J. ; Wen, J.X. ; Ohigashi, H. ; Yin, Q.R.

Author_Institution

Inst. of Org. Chem., Acad. Sinica, Shanghai, China

fYear

1996

fDate

25-30 Sep 1996

Firstpage

1093

Lastpage

1098

Abstract

In the design of ultrasonic transducers for medical and non-destructive applications, the active area of the transducer is an important factor for performance. In this paper, the optimum active area and the thickness dependence of P(VDF-TrFE) piezo-copolymer films for unturned ultrasonic transducers are discussed in terms of the transducer loss (TL), obtained from the modified Mason´s equivalent circuit. The experimental results of TL agree with the simulations for two unturned P(VDF-TrFE) ultrasonic transducers, with 41 and 83 μm thick piezo-polymer films, respectively

Keywords

biomedical ultrasonics; equivalent circuits; losses; piezoelectric transducers; polymer blends; polymer films; ultrasonic materials testing; ultrasonic transducers; 41 mum; 83 mum; medical application; modified Mason equivalent circuit; nondestructive application; optimum active area; performance; simulations; thickness dependence; transducer loss; unturned P(VDF-TrFE) piezoelectric copolymer ultrasonic transducers; Acoustic transducers; Biomedical transducers; Dielectric losses; Equations; Frequency; Impedance; Piezoelectric films; Piezoelectric transducers; Propagation losses; Ultrasonic transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1996. (ISE 9), 9th International Symposium on

Conference_Location

Shanghai

Print_ISBN

0-7803-2695-4

Type

conf

DOI

10.1109/ISE.1996.578265

Filename

578265