AIRBORNE ULTRASONIC TRANSDUCER

Authors
DURRIS L GOUJON L PELOURSON A GONNARD P BRISSAUD M RICHARD C
Citation
L. Durris et al., AIRBORNE ULTRASONIC TRANSDUCER, Ultrasonics, 34(2-5), 1996, pp. 153-158
Citations number
5
Categorie Soggetti
Acoustics,"Radiology,Nuclear Medicine & Medical Imaging
Journal title
Ultrasonics → ACNP
ISSN journal
0041624X
Volume
34
Issue
2-5
Year of publication
1996
Pages
153 - 158
Database
ISI
SICI code
0041-624X(1996)34:2-5<153:AUT>2.0.ZU;2-M
Abstract
A bilaminar consisting of a piezoelectric ceramic disk mounted on a po lymer disk was chosen to build an ultrasonic proximity detector in air . The influences of the polymer and the ceramic thicknesses on the tra nsducer's dynamic behaviour are investigated using finite element mode lling, for various configurations. The influence of the type of polyme r is also studied. Prototypes operated at frequencies higher than 200 kHz were built. These allowed detection ranges higher than 2 m, with a cheap amplifier and detection circuitry.