508 一方向炭素繊維強化複合材料の高温における非主軸クリープ破断挙動(OS1(2) 微視構造を有する材料の変形と破壊複合材料の特性評価と解析)

概要

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Creep rupture behavior of a unidirectional T800H/Epoxy composite under constant load conditions at different temperatures is examined. Tensile creep rupture tests are performed at different stress levels on plain coupon specimens with various fiber orientations θ=0, 10, 30, 45, 90°. Transient creep behavior is dominant for all the fiber orientations, and ultimate creep rupture takes place along reinforcing fibers regardless of fiber orientation and test temperature. A creep damage mechanics model is then developed for describing anisotropic creep rupture behavior at different temperatures. The proposed model can adequately describe the directional and temperature-dependent off-axis creep rupture behavior of the unidirectional composite. Another creep rupture model that is formulated using the Larson and Miller parameter also succeeds in predicting the off-axis creep rupture behavior.
一般社団法人日本機械学会の論文
2006-08-03