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31 July 2003 Vibration damping in Ni-Mn-Ga composites
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Ferromagentic 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.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jorge Feuchtwanger, Kelli Griffin, Jian Kang Huang, Robert C. O'Handley, Samuel M. Allen, and David Bono "Vibration damping in Ni-Mn-Ga composites", Proc. SPIE 5052, Smart Structures and Materials 2003: Damping and Isolation, (31 July 2003);

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