27 April 2011 Damping behavior of polymer composites with high volume fraction of NiMnGa powders
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Abstract
Polymer composites inserted with high volume fraction (up to 70 Vol%) of NiMnGa powders were fabricated and their damping behavior was investigated by dynamic mechanical analysis. It is found that the polymer matrix has little influence on the transformation temperatures of NiMnGa powders. A damping peak appears for NiMnGa/epoxy resin (EP) composites accompanying with the martensitic transformation or reverse martensitic transformation of NiMnGa powders during cooling or heating. The damping capacity for NiMnGa/EP composites increases linearly with the increase of volume fraction of NiMnGa powders and, decreases dramatically as the test frequency increases. The fracture strain of NiMnGa/EP composites decrease with the increase of NiMnGa powders.
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Xiaogang Sun, Jie Song, Hong Jiang, Xiaoning Zhang, Chaoying Xie, "Damping behavior of polymer composites with high volume fraction of NiMnGa powders", Proc. SPIE 7977, Active and Passive Smart Structures and Integrated Systems 2011, 79771G (27 April 2011); doi: 10.1117/12.881852; https://doi.org/10.1117/12.881852
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