This research program addresses functionally graded thin film shape memory material (nickel titanium) being produced at UCLA. Shape memory alloys have the property that they return to a memorized shape when heated. The material developed at UCLA has the unique capability of two-way actuation, that is it returns to a second shape when cooled. This project will develop a thermomechanical model for this new material, consisting of a thermal model, a mechanical model, a constitutive relation, and a phase transformation model.
This research will enable the design of shape memory alloy devices. For example, it may make it possible to produce small devices on the surfaces of aircraft to reduce drag or control flight. It will enable the development of new MEMS (micro-electro-mechanical systems) devices. This advancement may be especially valuable in biomedical applications since nickel titanium is biocompatible.
