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Polymer Assessment for Magnetic Shape Memory AlloyComposites

Published online by Cambridge University Press:  26 February 2011

Royale S Underhill ,
Gregory A Keddy  and
Shannon P Farrell
Royale S Underhill
Affiliation:
royale.underhill@drdc-rddc.gc.ca, Defence R&D Canada - Atlantic, Emerging Materials Section, PO Box 1012, (9 Grove Street), Dartmouth, Nova Scotia, B2Y 3Z7, Canada, (902)427-3481, (902)427-3435
Gregory A Keddy
Affiliation:
Greg.Keddy@dal.ca, Defence R&D Canada - Atlantic, PO Box 1012, Dartmouth, Nova Scotia, B2Y 3Z7, Canada
Shannon P Farrell
Affiliation:
Shannon.Farrell@drdc-rddc.gc.ca, Defence R&D Canada - Atlantic, PO Box 1012, Dartmouth, Nova Scotia, B2Y 3Z7, Canada
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Abstract

Our surrounding environment is teeming with useful energy, waiting to beharnessed (i.e., solar, wind, tidal, etc.). If this energy can be exploitedat the point where it is required, then the need to carry additional powersources can be reduced. In recent years, magnetic shape memory alloys (MSMA)have demonstrated an ability to convert mechanical energy to magneticenergy. Such conversions have lead to the investigation of these alloys forenergy harvesting applications.

There are a number of issues to address when forming a MSMA/polymercomposite. The polymer must be stiff enough to transmit the induced strainthrough the entire matrix, yet soft enough not to exceed the MSMA blockingstress. Also, the polymer must not dampen any force applied before it can betransmitted to the MSMA particles.

Ten polymers have been investigated for MSMA/polymer composites. The workpresented here will describe progress in nickel-manganese-gallium(Ni-Mn-Ga)/polymer composite fabrication and characterization. Specialattention will be given to polymer selection, optimizing particle dispersionand MSMA/polymer interfacial interactions.

Keywords

compositepolymeralloy

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References

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