形状記憶ファイバを埋め込んだエポキシ樹脂複合材料ばりの制振効果

概要

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Recent studies have examined the smart material possibilities of Shape Memory Alloys' (SMA). SMA have shape recovery and stiffness change capability by thermo-elastic martensitic transformation. With other useful devices, smart materials would be the foundation of intelligent structures that can perceive, judge and respond to their own mechanical changes. For example, implanted AE sensors monitor the intelligent structure and detect frequency changes in signals when events such as load-fluctuations, earthquakes or fiber-separations off the matrix occur. Data from AE sensors are subjected to computer analysis. If analysis indicate that mechanical changes are critical for the structure, SMA are immediately heated electrically. As a result, a structure obtains extra reinforcement when it is necessary. In this paper, we construct fracture-prediction system based on the desirable characteristics of SMA. We develop TiNi fibers reinforced/epoxy-resin composite materials as SMA. The results show that developed SMA create the effective damping effect against vibration such as earthquake waves.
日本高専学会の論文
2007-01-20