DocumentCode :
2711357
Title :
Behavior of piezoelectric actuators under high electric field
Author :
Kugel, V.D. ; Zhang, Q.M. ; Xu, Baomin ; Wang, Qing-Ming ; Chandran, Sanjay ; Cross, L.E.
Author_Institution :
Mater. Res. Lab., Pennsylvania State Univ., University Park, PA, USA
Volume :
2
fYear :
1996
fDate :
18-21 Aug 1996
Firstpage :
655
Abstract :
Behavior of piezoelectric actuators (bimorph, unimorph, RAINBOW, and shear-mode) fabricated from soft ceramics has been investigated in a wide electric field and frequency range. The electrical admittance, mechanical displacement, and blocking force of these transducers have been found to be highly dependent on the magnitude of driving field. The resonant frequency and mechanical quality factor of bending vibrations for all but shear-mode actuators decreases significantly with increasing driving field. Analysis shows that despite a large variation in the quasi-static electrical admittance and reduced tip displacement of bimorph, unimorph, and RAINBOW cantilevers with driving field, their ratio is almost a constant, which characterizes the ratio of dielectric permittivity ε33T to piezoelectric coefficient d31
Keywords :
Q-factor; bending; permittivity; piezoceramics; piezoelectric actuators; vibrations; RAINBOW device; bending vibration; bimorph device; blocking force; cantilever; dielectric permittivity; electric field; electrical admittance; mechanical quality factor; piezoelectric actuator; piezoelectric coefficient; resonant frequency; shear-mode device; soft ceramic; tip displacement; unimorph device; Admittance; Ceramics; Displacement measurement; Ferroelectric materials; Force measurement; Frequency; Piezoelectric actuators; Piezoelectric materials; Piezoelectric transducers; Vibrations;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on
Conference_Location :
East Brunswick, NJ
Print_ISBN :
0-7803-3355-1
Type :
conf
DOI :
10.1109/ISAF.1996.598100
Filename :
598100
Link To Document :
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