1336 Shape Controllable Sandwich Structure Using SMA Honeycomb Core
Details
In this research, we proposed a sandwich structure that consists of a shape memory alloy (SMA) honeycomb core and carbon fiber reinforced plastic (CFRP) facesheets as a lightweight geometric variable structure. First, the CFRP facesheets were bonded to the SMA honeycomb core and a pre-shear-strain was applied to the SMA core. Then the ends of the upper and lower facesheets were fixed together. After that, the SMA core was heated to generate the recovery shear stress. As a result, the sandwich panel curved in the out-of-plane direction. In addition, we analyzed qualitatively the deformation of the sandwich beam with the finite element method. The calculation result showed that the shear stress simulating the recovery stress deformed the beam in the same shape as the results of the experiments.
