ネットワーク構造複合材料の物性複合則

概要

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Functionally Gradient Material (FGM) is, especially, focused as a new heat-resistant material because of its thermal stress relaxation ability. In the design of FGM, estimation methods of physical property distributions, i.e. rules of mixture on physical properties, are required, because FGM has different composition in each region. In this paper, thermal conductivity, Young's modulus and thermal expansion coefficient of composite materials with dispersive and/or network structure are calculated by finite element method (FEM) analyses. The results of the analyses were formulated with the volume fraction and a newly proposed geometric parameter which is correlated with the connectivity between perticles in the network structure. Thermal conductivity predicted by this formula had a good agreement with experimental value of SiO_2/Fe composite materials.
社団法人日本鉄鋼協会の論文
1996-01-01