21406 高強度/高剛性ハイブリッド炭素繊維強化高分子複合材料の引張/圧縮特性(一般講演複合材料・異材接合)

概要

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The tensile and compressive properties of high strength PAN-based (IM600) and high modulus pitch-based (K13D) hybrid carbon fiber reinforced epoxy matrix composites were investigated. Fiber orientations of the hybrid composites were set to [0_<(IM600/0_<(K13D)>]_<2S>. The fiber volume fraction of the hybrid composites was 55.7 vol% (IM600: 29.3 vol%, K13D: 26.4 vol%). The tensile and compressive stress-strain curves of the hybrid composites show a complicated shape (jagged trace or nonlinear). By the high modulus pitch-based carbon fiber, the hybrid composites show the high modulus in the initial stage of loading. Subsequently, when the high modulus carbon fiber begin to fail, the high strength fiber would hold the load (strength) and the material continues to endure high load without instantaneous failure. Because higher strength fiber can help the load for a certain time after failure occur, these hybrid composites could be considered one example of a material possessing preventing instantaneous failure.
2010-03-09