一方向CFRP積層板のModeIおよびModeII層間破壊靱性値に及ぼす環境温度の影響

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In the present paper, the influence of thermal environment on Mode I and II interlaminar fracture toughnesses in unidirectional carbon fiber reinforced plastic (CFRP) Laminates is considered experimentally based on thermoviscoelastic property of matrix resin. Mode I and II interlaminar fracture toughnesses were measured by double cantilever beam (DCB) test and end notched flexure (ENF) test from-100℃ to 200℃, respectively. The specimens were made of prepreg of unidirectional carbon fiber/epoxy resin. As the results, Mode I fracture toughness decreases slightly with increasing temperature. Near the primary glass transition temperature of matrix resin, the fracture toughness has extreme value and over the temperature it falls down rapidly. On the other hand, Mode II interlaminar fracture toughness decreases roughly except primary and secondary glass transition temperature where the fracture toughness has a peak.
社団法人日本機械学会の論文
1999-02-25