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Thermal Activation of Shape Memory Polymers Through Vascular Means

[+] Author Affiliations
David M. Phillips

Universal Technology Corporation (UTC), Wright-Patterson AFB, OH

Jeffery W. Baur

Air Force Research Laboratory, Wright-Patterson AFB, OH

Paper No. SMASIS2011-5090, pp. 135-140; 6 pages
doi:10.1115/SMASIS2011-5090
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

Thermal activation of shape memory polymers requires a heating mechanism that will achieve a temperature range that exceeds a minimum triggering temperature but does not overheat the material. In laboratory practice, ovens are typically used to achieve a uniform temperature during testing. In practical applications, active heating schemes must be utilized that are robust enough to handle changing environmental conditions. In this work, we analyze the intricacies of vascular heating and cooling methodologies for shape memory polymers operating in an open environment. Our methodology is based on analytical modeling of the steady state surface temperature of shape memory polymers that incorporate vascular channels. With the material properties and environmental conditions, the model is used to predict appropriate channel geometry for triggering the shape memory polymer. Thermography is used to verify the model predictions for real systems of shape memory polymers.

Copyright © 2011 by ASME
Topics: Polymers , Shapes

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