NDLI: The effect of polymer on piezoelectirc fiber composites actuators

Content Provider	IEEE Xplore Digital Library
Author	Yonggang Liu Jishun Li Yujun Xue Xing Shen
Copyright Year	2009
Description	Author affiliation: The Key Lab for Smart Materials and Structures, Nanjing University of Aeronautics and Astronautics, 210016, China (Xing Shen) \|\| Henan Key Lab for Machinery Design and Transmission System, Henan University of Science and Technology, Luoyang, 471003, China (Yonggang Liu; Jishun Li; Yujun Xue)
Abstract	Piezoelectric fiber composites is one of the new type piezoelectric devices for actuators, since it has obvious anisotropy as well as high toughness that couldn't be gotten from normal piezoceramics. Piezoelectric fiber composites is denominated by piezoelectric fiber, polymer and interdigitated electrode layer. Through design processes, better mechanical and electrical characteristics than piezoceramic materials can be obtained. Its theory model is not founded completely yet because of the complexity of this device. So a series of piezoelectric unit's equations about longitudinal length extension vibration mode are established. According to the dynamic FEM (finite element method) equations for piezoelectric actuators, which were established by means of Lagrange function and Hamilton principle, some finite models are established. Then, the effect of polymer's material characteristics on performance of actuators is studied. The results show that piezoelectric fiber composites has orthotropic properties. And the strain of piezoelectric fiber composites can be improved markedly by employing polymer with larger permittivity, Poisson ratio or smaller elastic modulus. At the same time the stress of actuators is studied. In addition, the effect of polymer's thickness and material constants around electrodes are studied. Several rules summed. At last, the maximum strain (170µ ) is got from the numeric model of optimized samples, which is very large considering composites.
Starting Page	1
Ending Page	5
File Size	330051
Page Count	5
File Format	PDF
ISBN	9781424449705
ISSN	10994734
DOI	10.1109/ISAF.2009.5307540
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-08-23
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Polymers Piezoelectric actuators Optical fiber devices Piezoelectric devices Piezoelectric materials Optical fiber theory Electrodes Equations Capacitive sensors Anisotropic magnetoresistance
Content Type	Text
Resource Type	Article

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