Interfacial polarization and its influence on effective complex permittivity of mixtures

Author

Chen, Xiaolin ; Cheng, Yonghong ; Wu, Kai ; Wu, Shengnan

Author_Institution

State Key Lab. of Electr. Insulation & Power Equip., Xi´´an Jiaotong Univ., Xianning

fYear

2008

fDate

7-11 Sept. 2008

Firstpage

238

Lastpage

241

Abstract

A two-component composite material is simulated by 8times8times8 cubic cells, containing a spherical inclusion in each of them. A series of produced random numbers are regarded as the radii of these spherical inclusions to simulate the size distribution of inclusions. The finite element method (FEM) is applied to solve the potential distribution and the effective permittivity is calculated by the energy balance. Because the developed simulation model is anisotropic, in order to get the macroscopical dielectric properties of isotropic composites, a statistical mean method for the permittivities in three orthogonal orientations is adopted to calculate the effective permittivity. Based on the simulation model and calculation procedure, the interfacial polarization and its influence on the effective complex permittivity of composites are investigated.

Keywords

composite material interfaces; dielectric polarisation; finite element analysis; inclusions; permittivity; dielectric properties; effective complex permittivity; energy balance; finite element method; interfacial polarization; mixtures; orthogonal orientations; size distribution; spherical inclusion; statistical mean method; two-component composite material; Anisotropic magnetoresistance; Composite materials; Computational modeling; Dielectric materials; Dielectrics and electrical insulation; Finite element methods; Optical materials; Permittivity; Polarization; Production;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials, 2008. (ISEIM 2008). International Symposium on

Conference_Location

Mie

Print_ISBN

978-4-88686-005-7

Electronic_ISBN

978-4-88686-006-4

Type

conf

DOI

10.1109/ISEIM.2008.4664540

Filename

4664540