Fabrication and Performance of Functionally Graded Piezoelectric Bending Actuators
A new type of functionally graded(FG)piezoelectric bending actuator was proposed by the authors in the former study and the advantage of the new actuator over the traditional bimorph and unimorph actuators in internal stress distribution was illustrated by simulation results.In this study,the fabrication process of functionally graded piezoelectric bending actuators was developed and the characteristics of the fabricated actuators were investigated.The material compositions with different dielectric and piezoelectric constants were selected from the Pb(Ni1/3Nb2/3)O3-PbZrO3-PbTiO3(PNN-PZ-PT)family and used as the four layers in the new FG piezoelectric actuator.The piezoelectric constant and dielectric constant were graded oppositely in the thickness direction.The durability of the fabricated FG piezoelectric actuators was measured in a vibration test and compared with that of the traditional bimorph actuator to evaluate the improvement of performance.The results showed that the durability of the FG piezoelectric actuators is much higher than that of the bimorph actuator.
Functionally Graded Piezoelectric Actuator Durability
J.H. Qiu K.J. Zhu
The Aeronautical Key Laboratory for Smart Materials & Structures,College of Aerospace Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing210016,P.R.China
国际会议
The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)
重庆·南京
英文
2007-05-01（万方平台首次上网日期，不代表论文的发表时间）