This lecture introduces the concept of smart composites, which incorporate sensors and actuators to adapt to the environment. It covers the classification, types, and applications of smart composites, including examples like self-sensing high-pressure H2 storage vessels and active skis. The lecture also discusses the integration of shape memory alloys in composites, challenges faced, and the design considerations for SMA composites. Various examples and case studies are presented to illustrate the principles and potential applications of smart composites in different fields.