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Effective dielectric constant of random composite materials

Sareni, Bruno and Krähenbühl, Laurent and Beroual, Abderrahmane and Brosseau, Christian Effective dielectric constant of random composite materials. (1997) Journal of Applied Physics, 81 (5). 2375-2383. ISSN 0021-8979

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Official URL: http://dx.doi.org/10.1063/1.364276

Abstract

The randomness in the structure of two-component dense composite materials influences the scalar effective dielectric constant, in the quasistatic limit. A numerical analysis of this property is developed in this paper. The computer-simulation models used are based on both the finite element method and the boundary integral equation method for two-and three-dimensional structures, respectively. Owing to possible anisotropy the orientation of spatially fixed inhomogeneities of permittivity e1, embedded in a matrix of permittivity e2, affects the effective permittivity of the composite material sample. The primary goal of this paper is to analyze this orientation dependence. Second, the effect of the components geometry on the dielectric properties of the medium is studied. Third the effect of inhomogeneities randomly distributed within a matrix is investigated. Changing these three parameters provides a diverse array of behaviors useful to understand the dielectric properties of random composite materials. Finally, the data obtained from this numerical simulation are compared to the results of previous analytical work

Item Type:Article
Additional Information:Thanks to AIP editor. The original publication is available at http://jap.aip.org/
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Institut National des Sciences Appliquées de Lyon - INSA (FRANCE)
Other partners > Université de Bretagne Occidentale - UBO (FRANCE)
Other partners > Université Claude Bernard-Lyon I - UCBL (FRANCE)
Other partners > Ecole Centrale de Lyon (FRANCE)
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Deposited By: Bruno SARENI
Deposited On:20 Dec 2012 07:42

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