Tailoring the Response Time of Shape Memory Alloy Wires through Active Cooling and Pre-stress

  title={Tailoring the Response Time of Shape Memory Alloy Wires through Active Cooling and Pre-stress},
  author={Yonas Tadesse and Nicholas Thayer and Shashank Priya},
  journal={Journal of Intelligent Material Systems and Structures},
  pages={19 - 40}
Application of shape memory alloy (SMA) actuators is limited to low frequencies due to slow cooling time especially in the embedded conditions where heat transfer rate is the controlling factor. In this study, we investigate various active cooling techniques and effect of pre-stress to improve the response time of two commercially available SMAs: Flexinol from Dynalloy Inc. and Biometal fiber from Toki Corporation. Flexinol and Biometal fiber of equal length and diameter were found to exhibit… 
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