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Proceedings Paper

Frequency response of single-crystal Ni-Mn-Ga FSMAs
Author(s): Christopher P. Henry; Pablo G. Tello; David Bono; Julee Hong; Ryan Wagner; Jessica Dai; Samuel M. Allen; Robert C. O'Handley
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Paper Abstract

Magnetic-field-induced strain in single crystals of Ni-Mn-Ga magnetic shape memory alloys were studied under cyclic field conditions using a compression spring to reset the sample as H→0. Low frequency actuation strain of 2.5% degraded to about 1.5% at an actuation frequency of 500 Hz. Two resonant-like features appear in the ε(f) data, which appear to correspond to a broad test system resonance (100-200Hz) and a sample longitudinal resonance near 350 Hz. The relative phase of field and strain support the assignment of the 350 Hz resonance to the sample.

Paper Details

Date Published: 13 August 2003
PDF: 5 pages
Proc. SPIE 5053, Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics, (13 August 2003); doi: 10.1117/12.484343
Show Author Affiliations
Christopher P. Henry, Fortis Technologies (United States)
Pablo G. Tello, Philips Research Labs. (Belgium)
David Bono, Massachusetts Institute of Technology (United States)
Julee Hong, Massachusetts Institute of Technology (United States)
Ryan Wagner, Massachusetts Institute of Technology (United States)
Jessica Dai, Massachusetts Institute of Technology (United States)
Samuel M. Allen, Massachusetts Institute of Technology (United States)
Robert C. O'Handley, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 5053:
Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics
Dimitris C. Lagoudas, Editor(s)

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