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1 Journal of Theoretical and Applied Mechanics

1 2014

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Development of a shape memory alloy wire actuator to operate a morphing wing

Rim M., Kim E.-H., Kang W.-R., Lee I.

Journal of Theoretical and Applied Mechanics

2014

Vol. 52 nr 2

519--531

DSC tests were performed on several types of SMAs to verify the phase-transformation temperatures, and then experiments to examine their characteristics were carried out. An electric-current was supplied to the SMA wire to measure the appropriate operational cur- rent range. The force generated by the SMA wire increased according to the supplied current, but it diminished when the over-current was supplied because thermo-mechanical properties of the wire started to degrade. The appropriate stress range for effective actuation charac- teristics was also investigated. The SMA wire actuator was designed to operate a morphing wing. Experiments for the wing were conducted to verify its characteristics and it was smo- othly deformed.