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

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 d<inf>33</inf>, Curie temperature Tc and elastic compliance coefficient s<inf>33</inf> of the PZN-PZT ceramics are found to be 520 pC/N, 320¡䟡nd 20.5&times;10^&ndash;12 m²/N, respectively. Theory of piezoelectric constants and of piezoceramic fiber composite are 509 and &ndash;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 &mu;m and 1.7 &mu;m, respectively, indicating the actuator has a high electromechanical property

Fabrication of piezoelectric fiber composites by the double cutting–filling method and properties characterisation

“…14 First, non-polarized PZT-51 piezoceramic blocks were fabricated by the solid phase reaction method. 14 First, non-polarized PZT-51 piezoceramic blocks were fabricated by the solid phase reaction method.…”

“…In this study, piezoceramic PZT-51 (Zibo Yuhai Electronic Ceramic Co. Ltd), interdigitated electrodes (Shanghai Cengtuo Electronics Technology Co., Ltd) and epoxy resin matrix (Beijing Jinhong Century Technology Co., Ltd) were selected as the raw materials for fabrication of PFCs. 14 First, non-polarized PZT-51 piezoceramic blocks were fabricated by the solid phase reaction method. Then the piezoceramic block was cut using a multi-wire cutting machine to make piezoceramic wafers.…”