Transducer arrays from piezoelectric hollow spheres

Author

Alkoy, S. ; Meyer, R.J., Jr. ; Hladky-Hennion, A.C. ; Hughes, W.J. ; Cochran, J.K., Jr. ; Newnham, R.E.

Author_Institution

Dept. of Mater. Sci. & Eng., Gebze Inst. of Technol., Turkey

Volume

2

fYear

2000

fDate

2000

Firstpage

737

Abstract

Directional transducer arrays were prepared from lead zirconate titanate based piezoelectric ceramic hollow spheres (BBs). Compared to a single sphere, a 4×4 array of 16 spheres connected in parallel has a 22 dB higher transmitting voltage response (TVR) and a few dB higher free field voltage sensitivity (FFVS), but when the spheres are connected in a mix of series and parallel the sensitivity is 10-12 dB higher. In an array of spheres connected in parallel, increasing the sphere size from (radius=1.15 mm) to (r=1.35 mm), or increasing the radiating area results in an increase of up to 15 dB in TVR. Omnidirectional response up to 50 kHz, and directional response above that was obtained

Keywords

lead compounds; piezoceramics; piezoelectric transducers; ultrasonic transducer arrays; 50 kHz; PZT; PbZrO3TiO3; directional response; directional transducer array; free field voltage sensitivity; lead zirconate titanate ceramic; omnidirectional response; piezoelectric hollow sphere; transmitting voltage response; Acoustic arrays; Acoustic transducers; Ceramics; Electrodes; Piezoelectric materials; Piezoelectric transducers; Slurries; Titanium compounds; Ultrasonic transducers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on

Conference_Location

Honolulu, HI

ISSN

1099-4734

Print_ISBN

0-7803-5940-2

Type

conf

DOI

10.1109/ISAF.2000.942425

Filename

942425