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Durability Assessment of Fabric-Reinforced Shape-Memory Polymer Composites

[+] Author Affiliations
G. P. Tandon, K. Goecke

Air Force Research Laboratory, Wright-Patterson AFB; University of Dayton Research Institute, Dayton, OH

K. Cable

Cornerstone Research Group, Inc., Dayton, OH

J. Baur

Air Force Research Laboratory, Wright-Patterson AFB, OH

Paper No. SMASIS2009-1242, pp. 23-32; 10 pages
doi:10.1115/SMASIS2009-1242
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

The present study is a baseline assessment of the environmental durability of current state-of-the-art, fabric-reinforced shape memory materials being considered for morphing applications. Tensile dog-bone-shaped specimens are cut along three different directions, namely, along 0°, perpendicular (90°), and at 45° to the orientation of the fabric. The shape memory properties and elastomeric response before and after relevant environmental exposure to water at 49°C for 4 days, in lube oil at room temperature and at 49°C for 24 hours, and after exposure to Xenon Arc (63°C, 18 minutes water and light/102 minutes light only) and spectral intensity of 0.3 to 0.4 watts/m2 for 125 cycles (250 hours exposure time) are measured. Weight loss of the as-received and conditioned specimens is monitored while the dog-bone-shaped specimens are subjected to recovery following fixation. Parameters being investigated include stored strain, recovery stress, shape fixity, shape recovery, and modulus in the glassy and rubbery state.

Copyright © 2009 by ASME

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