Due to increasing needs for lightweight and multifunctional structures and materials that can operate at and sustain the extreme environment such as high temperature and pressure, hybrid composites are of high interests and being developed recently. Because of the mismatch in properties of different layers, the interfacial regions in these hybrid systems are critical for reliability. The objectives of this work are to develop a robust and multifunctional interface between shape memory alloys and polymer matrix composite for hybrid materials that undergoes elevated temperatures at the operating environment. Functionalities of this interface include thermo-mechanical capability together with self-sensing and self-healing abilities. Approaches from experimental techniques for manufacturing and characterizing will be used. Computational models across the scales utilizing molecular dynamics, micromechanics and finite element methods will be developed to assist the understanding and interpreting the complex phenomena observed at the interface as well as to help design the interface that meets the specific needs.