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Thermal Control of the Wrinkling Effect Using NiTi Thin Film

[+] Author Affiliations
Myunghoon Seong, K. P. Mohanchandra, Gregory P. Carman

University of California, Los Angeles, Los Angeles, CA

Dong-Gun Lee

Korea Polytechnic University, Gyeonggi-Do, Republic of Korea

Paper No. SMASIS2009-1295, pp. 131-136; 6 pages
doi:10.1115/SMASIS2009-1295
From:
  • ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • Volume 1: Active Materials, Mechanics and Behavior; Modeling, Simulation and Control
  • Oxnard, California, USA, September 21–23, 2009
  • Conference Sponsors: Aerospace Division
  • ISBN: 978-0-7918-4896-8 | eISBN: 978-0-7918-3857-0
  • Copyright © 2009 by ASME

abstract

This paper presents modeling and testing results for membrane wrinkling control using material’s property changes produced by a 1st order phase transformation. ANSYS® is utilized to determine the membrane’s length and width as well as thickness to produce wrinkling in a test sample. Test results conducted on a NiTi 20.9mm×10.8mm×5.5μm sample produce wrinkling at approximately 1% strain, which is the critical strain (εcr ). Using the phase transformation properties and corresponding stiffness change, we demonstrated that wrinkling control (i.e. turning it on and off) is possible simply by changing the temperature through the phase transformation. The maximum amplitude of the wrinkles was 46.5 ± 5.4μm and the wavelength was 2.05 ± 0.40mm.

Copyright © 2009 by ASME

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