Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4743
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Title: Effective properties of spherically anisotropic piezoelectric composites
Authors: Gu, GQ
Wei, EB
Poon, YM
Shin, FG
Issue Date: 1-Aug-2007
Source: Physical review. B, Condensed matter and materials physics, 1 Aug. 2007, v. 76, no. 6, 064203, p. 1-6
Abstract: Piezoelectric composites consisting of spherically anisotropic piezoelectric inclusions (i.e., piezoceramic material) in an infinite nonpiezoelectric matrix under a uniform electric field are theoretically investigated. Analytical solutions for the elastic displacements and the electric potentials are derived exactly. Taking account of the coupling effects of elasticity, permittivity, and piezoelectricity, formulas are derived for the effective dielectric and piezoelectric responses in the dilute limit. A piezoelectric response mechanism is revealed, in which the effective piezoelectric response vanishes irrespective of how much spherically anisotropic piezoelectric inclusions are inside. Moreover, the effective coupled responses of the piezoelectric composites show that the effective dielectric responses decrease (increase) as the inclusion elastic (piezoelectric) constants increase.
Keywords: Composite materials
Elasticity
Inclusions
Permittivity
Piezoceramics
Piezoelectricity
Publisher: American Physical Society
Journal: Physical review. B, Condensed matter and materials physics 
ISSN: 1098-0121
EISSN: 1550-235X
DOI: 10.1103/PhysRevB.76.064203
Rights: Physical Review B © 2007 The American Physical Society. The Journal's web site is located at http://prb.aps.org/
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