一方向繊維強化複合材料の熱膨脹係数

第2報:CFRP一方向材およびエポキシ樹脂に関する実験

抄録

One point of main purpose of these experiments is to reveal certain temperature dependent behavior of thermal expansion coefficients of theconstituents of CFRP. The second purpose is a comparison between experimental and numerical results of an influence of α_m on α_x and α_z. The third is to estimate unknown αf_fr and α_fz of carbon fiber itself by such a comparison. Testing apparatus used here is an interferometric dilatometer utilizing gas laser which is sensitive enough to measure temperature dependent α's. Involved behavior of α's of unidirectional CFRP and Epoxy resin is elucidated by virture ofthese experiments and the authors' preceding analysis concerning this subject. For example, temperature dependency of α_m has a predominant effect on αx, as it was suggested by the analysis. The estimated α_fr and α_fz are quite different from the corresponding values of pyrographite.