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Proceedings Paper

Vibration damping in Ni-Mn-Ga composites
Author(s): Jorge Feuchtwanger; Kelli Griffin; Jian Kang Huang; Robert C. O'Handley; Samuel M. Allen; David Bono
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Paper Abstract

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.

Paper Details

Date Published: 31 July 2003
PDF: 6 pages
Proc. SPIE 5052, Smart Structures and Materials 2003: Damping and Isolation, (31 July 2003); doi: 10.1117/12.483795
Show Author Affiliations
Jorge Feuchtwanger, Massachusetts Institute of Technology (United States)
Kelli Griffin, Massachusetts Institute of Technology (United States)
Jian Kang Huang, Massachusetts Institute of Technology (United States)
Robert C. O'Handley, Massachusetts Institute of Technology (United States)
Samuel M. Allen, Massachusetts Institute of Technology (United States)
David Bono, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 5052:
Smart Structures and Materials 2003: Damping and Isolation
Gregory S. Agnes; Kon-Well Wang, Editor(s)

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