Vibration damping in Ni-Mn-Ga composites

被引：5
|
作者：
Feuchtwanger, J [1 ]
Griffin, K [1 ]
Huang, JK [1 ]
O'Handley, RC [1 ]
Allen, SM [1 ]
Bono, D [1 ]
机构：
[1] MIT, Cambridge, MA 02139 USA
来源：
SMART STRUCTURES AND MATERIALS 2003: DAMPING AND ISOLATION | 2003年 / 5052卷
关键词：
ferromagnetic shape memory alloys; composites; vibration damping; Ni-Mn-Ga;
D O I：
10.1117/12.483795
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Ferromagnetic shape memory alloy composites exhibit good qualities as vibration absorbers. Loss ratios in excess of 25% have been measured in polymer samples containing 20 vol% Ni-Mn-Ga. The ability to dissipate large amounts of energy is due to the same mechanism that is also responsible for the large strains observed in single crystals used as actuators, namely twin-boundary motion. The loss ratios of the FSMA-loaded composites are compared to those for pure polymer samples and polymer loaded with inert filler. The effects of the pre-processing of the filler material on its performance are also shown.
引用
收藏
页码：92 / 97
页数：6
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