Fabrication of Flexible Piezoelectric Fiber Composite Actuator by Arrangement-casting Method

doi:10.3724/SP.J.1077.2013.12205

Abstract

Abstract: The structure of piezoceramic fiber composite actuator was designed, consisting of interdigitated electrode plates, binder and piezoceramic fiber composite layer. The flexible, planar piezoceramic fiber composite actuators were prepared by arrangement-casting method. The electrical and mechanical properties of the PZN-PZT ceramics were tested. Piezoelectric properties of piezoceramic fiber composite were estimated by iso-strain mixing formulas. The strain properties of the actuator were tested using dynamic response system based on LabVIEW. The piezoelectric constant d₃₃, Curie temperature Tc and elastic compliance coefficient s₃₃ of the PZN-PZT ceramics are found to be 520 pC/N, 320℃ and 20.5×10^–12 m²/N, respectively. Theory of piezoelectric constants and of piezoceramic fiber composite are 509 and –156 pC/N, respectively. Test results show that the actuator is capable of producing large, directional in-plane strains. 100 parts-per-million longitudinal strain and 58 parts-per-million transverse strain were generated under a 300 V peak-to-peak applied voltage cycle. The stretching of the longitudinal and transverse directions are 3.6 μm and 1.7 μm, respectively, indicating the actuator has a high electromechanical property.

Key words: piezoceramic fibers, composites, actuator, arrangement-casting method, interdigitated electrodes

CLC Number:

TB381

LI Shi-Cheng, ZHU Kong-Jun, QIU Jin-Hao, PANG Xu-Ming. Fabrication of Flexible Piezoelectric Fiber Composite Actuator by Arrangement-casting Method[J]. Journal of Inorganic Materials, 2013, 28(3): 331-335.

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