Title :
Destruction mechanism and destruction detection technique for multilayer ceramic actuators
Author :
Aburatani, Hideaki ; Uchino, Kenji ; Furutaand, Atushi ; Fuda, Yoshiaki
Author_Institution :
IMRL, Pennsylvania State Univ., University Park, PA, USA
Abstract :
The destruction process of piezoelectric actuators under bipolar driving was studied using acoustic emission (AE) monitoring and induced-displacement measurement. The effect of floating electrode over the internal electrode´s end was also investigated. Floating electrodes can suppress the field concentration and cracking in the actuator
Keywords :
acoustic emission testing; displacement measurement; electrical faults; electrodes; failure analysis; lead compounds; piezoceramics; piezoelectric actuators; Pb(NiNb)O3-PZT; PbNiNbO3-PbZrO3TiO3; acoustic emission monitoring; bipolar driving; cracking; destruction detection technique; destruction mechanism; field concentration; floating electrode; induced-displacement measurement; internal electrode; multilayer ceramic actuators; piezoelectric actuators; poling; Acoustic emission; Acoustic measurements; Acoustic sensors; Ceramics; Delamination; Electrodes; Monitoring; Nonhomogeneous media; Piezoelectric actuators; Stress;
Conference_Titel :
Applications of Ferroelectrics, 1994.ISAF '94., Proceedings of the Ninth IEEE International Symposium on
Conference_Location :
University Park, PA
Print_ISBN :
0-7803-1847-1
DOI :
10.1109/ISAF.1994.522478
