Evaluation of Shape Recovery Force by Electric Heating of TiNi Shape-memory Alloy Reinforced Composites

摘要

The shape recovery force formed by the electric heating was evaluated by using the test piece which embedded two kinds of TiNi Shape-memory ally (SMA) fibers with different phase transformation temperature under polycarbonate (PC) matrix. The shape recovery force was confirmed in real time measuring the shrinkage of the test piece when it was electrically heated. It has been understood that the distribution of the shape recovery force of the test piece which uses one kind of SMA has the maximum point in the phase transformation temperature region, it decreases greatly before and behind that, and use in a wide range of the temperature is difficult However, it was confirmed to be able to expand the operation temperature region with the hybrid composite material produced using SMAs that the phase transformation temperature is different together.