Title :
Dielectric properties of 3D composite structures: Simulations versus experiments
Author :
Serdyuk, Yu.V. ; Podoltsev, A.D. ; Gubanski, S.M.
Author_Institution :
Dept. of Electr. Power Eng., Chalmers Univ. of Technol., Gothenburg, Sweden
Abstract :
Results of numerical simulations of the dielectric properties of binary composites with three-dimensional structures are verified by means of comparison with experimentally obtained data. Two different heterogeneous structures - regular (periodic) and stochastic, were studied. Frequency dependencies of the complex dielectric permittivities of the materials of the constituent phases of the composites were measured and were used as input for computer modelling together with their known geometrical parameters. Calculations were based on the effective media approach, and the associated field problem was solved numerically using the finite-volume method and the finite-element method. The results of the measurements and the computations of the effective complex permittivities of the composite materials are compared and are analysed.
Keywords :
composite materials; dielectric materials; finite element analysis; finite volume methods; permittivity; binary composite material; complex permittivity; computer model; dielectric properties; effective medium model; finite element method; finite volume method; frequency dependence; heterogeneous structure; numerical simulation; periodic structure; stochastic structure; three-dimensional structure; Composite materials; Dielectric materials; Dielectric measurements; Frequency measurement; Numerical simulation; Periodic structures; Permittivity measurement; Phase measurement; Solid modeling; Stochastic processes;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2002 Annual Report Conference on
Print_ISBN :
0-7803-7502-5
DOI :
10.1109/CEIDP.2002.1048756
