Behaviors of Shape Memory Alloy Wire Embedded Smart Composite Skins and Actuators
The shape changes by bending and twisting of a SMA/composite panel with embedded SMA wire actuators controlled by both electric resistive heating and passive elastic tailoring are investigated to realize the morphing wing of unmanned aerial vehicles. Three-dimensional finite element formulations are derived and used to analyze the behaviors of the SMA/composite smart structures. The numerical results show that the shapes of the SMA/composite panels can be controlled by judicious choices of control temperatures, SMA angles, and elastic tailoring. To validate the analytical results, two SMA-embedded curved panels are fabricated and then, their changes in shape are measured by a laser optical sensor when SMA is activated by electrically resistive heating. Both results show excellent correlation.
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
C. Kim et al., "Behaviors of Shape Memory Alloy Wire Embedded Smart Composite Skins and Actuators", Key Engineering Materials, Vols. 261-263, pp. 1463-1468, 2004