The anisotropic piezo-active composite with 1–3–0 connectivity is studied to show features of the piezoelectric response and electromechanical coupling at variations of microgeometric characteristics of the composite matrix. A system of the anisotropy factors is analysed for the single-domain 0.58Pb(Mg1/3Nb2/3)O3–0.42PbTiO3 crystal/porous polyurethane composite wherein the porosity and aspect ratio of pores are varied. Examples of extreme of electromechanical coupling factors and their anisotropy factors are analysed. The important role of the piezoelectric anisotropy factor of the composite and the elastic anisotropy of the porous polymer matrix is emphasised in connection with the non-monotonic volume-fraction dependence of some effective parameters of the composite and with large ratios of its electromechanical coupling factors ( and ). Some advantages of this anisotropic 1–3–0 composite over the conventional highly anisotropic PbTiO3-type ceramics are discussed.

Topolov, V.Y., Krivoruchko, A.V., & Bisegna, P. (2011). Electromechanical coupling and its anisotropy in a novel 1–3–0 composite based on single-domain 0.58Pb(Mg1/3Nb2/3)O3–0.42PbTiO3 crystal. COMPOSITES SCIENCE AND TECHNOLOGY, 71(8), 1082-1088 [10.1016/j.compscitech.2011.03.013].

Electromechanical coupling and its anisotropy in a novel 1–3–0 composite based on single-domain 0.58Pb(Mg1/3Nb2/3)O3–0.42PbTiO3 crystal

BISEGNA, PAOLO
2011

Abstract

The anisotropic piezo-active composite with 1–3–0 connectivity is studied to show features of the piezoelectric response and electromechanical coupling at variations of microgeometric characteristics of the composite matrix. A system of the anisotropy factors is analysed for the single-domain 0.58Pb(Mg1/3Nb2/3)O3–0.42PbTiO3 crystal/porous polyurethane composite wherein the porosity and aspect ratio of pores are varied. Examples of extreme of electromechanical coupling factors and their anisotropy factors are analysed. The important role of the piezoelectric anisotropy factor of the composite and the elastic anisotropy of the porous polymer matrix is emphasised in connection with the non-monotonic volume-fraction dependence of some effective parameters of the composite and with large ratios of its electromechanical coupling factors ( and ). Some advantages of this anisotropic 1–3–0 composite over the conventional highly anisotropic PbTiO3-type ceramics are discussed.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore ICAR/08 - Scienza delle Costruzioni
English
Con Impact Factor ISI
smart materials; polymer–matrix composites (PMCs); electrical properties; mechanical properties; modelling
Topolov, V.Y., Krivoruchko, A.V., & Bisegna, P. (2011). Electromechanical coupling and its anisotropy in a novel 1–3–0 composite based on single-domain 0.58Pb(Mg1/3Nb2/3)O3–0.42PbTiO3 crystal. COMPOSITES SCIENCE AND TECHNOLOGY, 71(8), 1082-1088 [10.1016/j.compscitech.2011.03.013].
Topolov, V; Krivoruchko, A; Bisegna, P
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/13503
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