炭素繊維強化複合材料の熱膨張特性

概要

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The rule of mixture for the coefficients of linear thermal expansion (CTE) of unidirectionally reinforced carbon fiber composites was investigated. The CTE of carbon fiber was obtained by the calculation using a model structure of the carbon fiber. Composites with quite different matrix properties were prepared and their CTE were measured near room temperature. The results were compared with the theoretical values based on various composite models. The applicability of Turners equation to CTE in the longitudinal direction was confirmed experimentally. For the transverse CTE, a cylindrical composite model was proposed, which was applicable not only to matrices such as epoxy resins having lower moduli but also to matrices such as metals having higher moduli than those of carbon fiber in the transverse direction.
社団法人日本材料学会の論文