328 短繊維強化有機複合材料の機械的特性に及ぼす高真空環境の影響と繊維応力場モデル

概要

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The tensile strength and Young's modulus of short carbon fibre reinforced polyimide (SCFR-PI) composites are considered in the high vacuum condition (10)^<-4> Pa and the atmospheric condition. From the experimental results, even though tested at the same temperature 298 K, the SCFR-PI kept in high vacuum condition has higher tensile strength and equivalent Young's modulus than that in the atmospheric condition. The rule of mixture and the shear lag treatment can not be used to evaluate the strength and Young's modulus of SCFR-PI composites in high vacuum condition. In high vacuum condition, the matrix resin is shrank owing to the degas and/or moisture desorption from the matrix and from the interface between the matrix and fibers, and thus yield the residual stresses in the organic composites. The method of characterizing them would be described for evaluation of SCFR-PI composites in space environment.
一般社団法人日本機械学会の論文
2002-10-10