Vol. 6, No. 7-8, 2011

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ISSN: 1559-3959
Nonlinear electromechanical fields and localized polarization switching of piezoelectric macrofiber composites

Yasuhide Shindo, Fumio Narita, Koji Sato and Tomo Takeda

Vol. 6 (2011), No. 7-8, 1089–1102
Abstract
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This paper examines theoretically and experimentally the nonlinear electromechanical response of piezoelectric macrofiber composites. 3D finite element analysis was carried out to study the strain versus electric field curve and the internal electromechanical fields near interdigitated electrodes in the macrofiber composites by introducing a model for polarization switching. The piezoelectric fibers in the macrofiber composite are partially or fully poled. Results on the strain versus electric field curves from microelectromechanical models and simple experiments were also presented, and comparison was made with the finite element solutions.

Keywords
piezomechanics, finite element method, material testing, piezoelectric composites, electromechanical field concentrations, smart materials and structures
Milestones
Received: 26 June 2010
Revised: 10 December 2010
Accepted: 13 December 2010
Published: 21 December 2011

Proposed: Adair R. Aguiar
Authors
Yasuhide Shindo
Department of Materials Processing
Graduate School of Engineering
Tohoku University
Aoba-yama 6-6-02, Sendai 980-8579
Japan
Fumio Narita
Department of Materials Processing
Graduate School of Engineering
Tohoku University
Aoba-yama 6-6-02, Sendai 980-8579
Japan
Koji Sato
Department of Materials Processing
Graduate School of Engineering
Tohoku University
Aoba-yama 6-6-02, Sendai 980-8579
Japan
Tomo Takeda
Department of Materials Processing
Graduate School of Engineering
Tohoku University
Aoba-yama 6-6-02, Sendai 980-8579
Japan