PMN-PT transducer: high stress measurements at resonance

Author

Pham-Thi, M. ; Gaucher, P. ; Lacour, O. ; Vanderborck, G.

Author_Institution

Lab. Central de Recherches, THALES, Orsay, France

Volume

2

fYear

2001

fDate

2001

Firstpage

1085

Abstract

High power piezoelectric devices are driven under high electric signal. To characterize the material in conditions close to their use in high acoustic power emission, we need to reach high strain or high strain velocity. This can be achieved only at resonance where the mechanical Qm factor amplifies the field-induced strain (by a factor of Qm). An experimental method is proposed to measure the strain of piezoceramic at resonance. The results measured on piezoelectric relaxor ceramic materials are compared with the performances obtained in Barrel Stave transducers

Keywords

Q-factor; dielectric hysteresis; lead compounds; piezoceramics; piezoelectric transducers; resonance; stress measurement; ultrasonic transducers; Barrel Stave transducers; PMN-PT transducer; Pb(Mg_1/3Nb_2/3)₃-PbTiO₃; PbMgO₃NbO₃-PbTiO₃; field-induced strain; high acoustic power emission; high electric signal; high power piezoelectric devices; high strain; high strain velocity; high stress measurements; mechanical Qm factor; piezoceramic; piezoelectric relaxor ceramic materials; resonance; Acoustic materials; Acoustic measurements; Acoustic transducers; Capacitive sensors; Piezoelectric devices; Piezoelectric materials; Piezoelectric transducers; Resonance; Strain measurement; Stress measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2001 IEEE

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-7177-1

Type

conf

DOI

10.1109/ULTSYM.2001.991908

Filename

991908