一方向強化PMCのクリープ寿命予測 : 3Dシアラグクリープモデルの提案と検討(クリープ,OS.14 先進材料の力学)

概要

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This paper describes a creep rupture model that takes into account the three time-dependent factors in unidirectional composites. The three factors are stress concentration on adjacent fibers from broken fibers and interfacial debonding propagation (IDP) around the broken fibers and stress relaxation of interfacial shear stress as a function of time respectively. The interfacial debonding propagates as a function of time due to the fact that the shear strain of the interface reaches the critical value by means of the viscoelastic characteristic of the matrix. The creep rupture time in unidirectional composites were calculated by the 3D shear-lag model taking into account above the three factors. Here, non-linear viscoelastic characteristic that was investigated by the creep and recovery tests about vinylester resin was substituted to matrix-viscoelastic behavior.
一般社団法人日本機械学会の論文
2004-03-03