705 積層材料の異材界面き裂進展挙動に関する研究(材料強度と構造設計,オーガナイズドセッション)

概要

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In recent years, laminated materials attracted attention because they are superior in ratio strength, ratio hardness and workability. They are used widely in areas of aerospace applications, for example. Therefore, it is important to evaluate the fracture characteristic of the laminated material. In this research, laminated materials of three ply was used, and the impact three-point bending test was conducted. A high-speed video camera was used, and dynamic fracture toughness was calculated by the digital image correlation method. As a result, when the mixed-mode ratio was large, dynamic fracture toughness increased. Furthermore, it was shown that the interface strength, fracture toughness of each material and mixed-mode ratio was related to the fracture morphology.
2008-09-12