衝撃負荷を受ける積層材料に対する破壊制御設計の体系化に関する一考察

概要

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In recent years, the laminated materials are designed and used widely in aerospace applications, for example. Therefore, it is important to evaluate the fracture characteristic of the laminated materials. In this research, the basic study on fracture control design for the laminated materials subjected to impact load is systematized. The dynamic fracture behavior is analyzed by using the high-speed video camera and the digital image correlation method. The dynamic stress intensity factor is experimentally calculated based on interfacial mechanics. In addition, the mixed-mode ratio, dynamic fracture toughness and kinking angle are evaluated from the dynamic stress intensity factor for the control and forecast of fracture. And, the characteristic of mixed-mode fracture criterion showing the condition and the behavior of fracture is examined. It is shown to be able to properly act as fracture control design by the materials evaluation method.
社団法人日本機械学会の論文
2009-10-25