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Fabrication of a Novel Monolithic NiTi Based Shape Memory Microgripper via Multiple Memory Material Processing

[+] Author Affiliations
M. Daly, A. Pequegnat, Y. Zhou

University of Waterloo, Waterloo, ON, Canada

M. I. Khan

Innovative Processing Technologies, Inc., Toronto, ON, Canada

Paper No. SMASIS2011-4903, pp. 505-508; 4 pages
doi:10.1115/SMASIS2011-4903
From:
  • ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1
  • Scottsdale, Arizona, USA, September 18–21, 2011
  • ISBN: 978-0-7918-5471-6
  • Copyright © 2011 by ASME

abstract

The exciting thermomechanical behavior of nickel-titanium shape memory alloys have sparked significant research efforts seeking to exploit their exotic shape memory properties. The performance capabilities of conventional nickel-titanium alloys are currently limited, however, by the retention of only one shape memory geometry. In this paper we demonstrate the application of an unprecedented manufacturing process known as Multiple Memory Material technology to create a novel monolithic nickel-titanium shape memory microgripper. In our design, actuation and gripping maneuvers are achieved by thermally activating processed material regions which possess unique shape memory transformation temperatures and shape set geometries. The existence of multiple shape memory regimes is confirmed through differential scanning calorimetry analysis and in situ resistivity measurements.

Copyright © 2011 by ASME

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