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Proceedings Paper

Manufacture and experimental and theoretical evaluation of adaptative glass/epoxy composites with embedded shape memory alloy wires
Author(s): Young-Kuk Choi; Michelle Salvia
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Paper Abstract

Adaptable hybrid composites are materials into which actuators are embedded in polymer matrix composites. Shape memory alloys (SMA) are amongst the potential candidates for actuators embedded in such composite smart structures. In order to test the influence of the processing conditions on the actuation properties of adaptive hybrid composites, a model system based on a glass epoxy asymmetric laminate composite with prestrained shape memory nitinol-copper wires, was used. When the SMA wires were electrically heated and cooled, undergoing a reversible martensite to austenite transformation, reversible bending of the host composite was observed. The most important deflection of the host composite was obtained for the material, processed with embedded wires in TWSME conditions. Nevertheless, for samples just prestrained for the OWSME, a self-training effect occurred in relation to the reverse polarized austenite to martensite transformation, during cooling after actuation. The experimental results obtained in the conditions of the sample processed with embedded wires in TWSME conditions can be modeled in the frame of recent phenomenological modeling. In spite of some drastic simplifications, the quasi-linear variation of the bending effect with temperature is correctly described using the metallurgical parameters defined from the Clausius-Clapeyron diagrams of this alloy previously determined.

Paper Details

Date Published: 11 July 2001
PDF: 11 pages
Proc. SPIE 4333, Smart Structures and Materials 2001: Active Materials: Behavior and Mechanics, (11 July 2001); doi: 10.1117/12.432776
Show Author Affiliations
Young-Kuk Choi, Ecole Centrale de Lyon (France)
Michelle Salvia, Ecole Centrale de Lyon (France)

Published in SPIE Proceedings Vol. 4333:
Smart Structures and Materials 2001: Active Materials: Behavior and Mechanics
Christopher S. Lynch, Editor(s)

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