10202 平面二軸試験機を用いたCFRP複合材料積層板の二軸強度特性評価(強度特性と評価,一般講演)

概要

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Biaxial tests were conducted by using cruciform specimens to obtain failure strength of quasi-isotropic carbon fiber/epoxy resin composite laminates. A stacking sequence of the laminates was (0/90/45/-45)s. Cruciform specimens were subjected to biaxial load by a biaxial testing machine with various biaxial load ratios, and strains were measured with strain gauges placed on the gauge area. Biaxial load ratio is not coincident with biaxial stress ratio due to the specimen configuration. Relationships among biaxial load ratio, strain ratio, and stress ratio were estimated based on measured strain for the cruciform specimen under uniaxial load. Experimental results indicated that failure strains under biaxial loading are less than those under uniaxial loading, which were measured by using strip specimens.
2009-03-05