Title :
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
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;
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
DOI :
10.1109/ISEIM.2008.4664540
