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Physical Modeling of Macroscopic Phase Transition Behavior for Nickel Titanium Shape Memory Alloy (SMA) Wires

[+] Author Affiliations
Rolf Gaasbeek, Bram de Jager

Eindhoven University of Technology (TU/e), Eindhoven, Netherlands

Paper No. SMASIS2017-3789, pp. V001T02A003; 8 pages
doi:10.1115/SMASIS2017-3789
From:
  • ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • Volume 1: Development and Characterization of Multifunctional Materials; Mechanics and Behavior of Active Materials; Bioinspired Smart Materials and Systems; Energy Harvesting; Emerging Technologies
  • Snowbird, Utah, USA, September 18–20, 2017
  • Conference Sponsors: Aerospace Division
  • ISBN: 978-0-7918-5825-7
  • Copyright © 2017 by ASME

abstract

The macroscopic behavior of Nickel Titanium Shape Memory Alloy (SMA) wires suffers from hysteresis. This is related to the fraction of material that is in detwinned martensite crystallographic orientation. In this work, a novel physical model is proposed that describes the fraction of transformed material on a macroscopic level. The model is history-free, and hence, is ideal to implement in model-based control strategies.

Copyright © 2017 by ASME

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