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Nonlinear electromechanical fields and localized polarization switching of 1-3 piezoelectric/polymer composites
Authors:Yasuhide Shindo  Fumio Narita  Taiki Watanabe
Affiliation:1. Department of Electrical Engineering and Automation, School of Electrical Engineering, Aalto University, PO BOX 13340, FI-00076 Aalto, Finland;2. Department of Medicine, Institute of Clinical Medicine, Helsinki University Central Hospital, HUS, PO Box 700, 00029 Finland;3. Department of Materials Science and Engineering, School of Chemical Technology, Aalto University, PO Box 16200, FI-00076 Aalto, Finland;4. Institute for Plasma-Nano Materials, Center for Advanced Plasma Surface Technology, Sungkyunkwan University, 300 ChunChun-dong, Jangan-gu, Suwon 440-746, South Korea;1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, PR China;2. Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application & Research Center for Solid State Physics and Materials, S, Suzhou University of Science and Technology, Suzhou, Jiangsu 215009, PR China;3. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, PR China
Abstract:This paper examines the nonlinear electromechanical response of 1-3 piezoelectric/polymer composites. The piezocomposites contain square or circular piezoelectric rods in an epoxy matrix. Experiments were conducted to measure the displacement versus electric field curves, using the device specimen of the 1-3 piezocomposites. Three dimensional finite element analysis was also carried out to study the electromechanical fields in the 1-3 piezocomposites by introducing a model for polarization switching. Comparison was then made between simulation and experiment.
Keywords:
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