連続繊維強化クロスプライ複合材料の破壊過程における微小き裂の進展と損傷領域の形成

概要

論文の詳細を見る
An experimental study was made on the extension behavior of the damaged region ahead of a notch tip in a continuous glass fiber-reinforced cross ply composite. The damage consists of a group of microcracks which extend in each ply of the composite. By applying the concept of fracture mechanics directly to these microcracks, the essential factor controlling the damage extension behavior is explained. In this study, elastic strain energy released by microcrack extension was measured by using a compliance method with quick unloading, which is separated from inelastically dissipated energy due to the viscoelastic character of epoxy resin. The experimental result shows that the released elastic strain energy is proportional to the total area of microcracks. This fact means that the damaged region extends under the condition of constant released elastic strain energy for unit area of microcracks.
一般社団法人日本機械学会の論文
1990-08-25