Title :
Optimizing ultrasonic transducers based on piezoelectric composites using a finite-element method
Author :
Challande, Pascal
Author_Institution :
Lab. de Mecanique Phys., St.-Cyr l´´Ecole, France
fDate :
5/1/1990 12:00:00 AM
Abstract :
A novel approach to understanding the vibratory behavior of composite piezoelectric materials is proposed. Elementary ceramic rods, and the effects of their width-to-thickness (W/T) ratio are studied. A model based on the finite-element methods is used. Some experimental results that agree well with the computed data are presented. Plots of resonant frequencies and coupling coefficients versus W/T are given that can be used in transducer design.<>
Keywords :
composite materials; piezoelectric materials; piezoelectric transducers; ultrasonic transducers; ceramic rods; coupling coefficients; finite-element method; piezoelectric composites; resonant frequencies; ultrasonic transducers; vibratory behavior; width-to-thickness ratio; Acoustic transducers; Ceramics; Dielectric constant; Dielectric losses; Finite element methods; Impedance; Optimization methods; Polymers; Probes; Ultrasonic transducers;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
