Impact-Resistant Polyurea Coating That Senses Damage in Real Time

Researchers have created a spray-on polyurea nanocomposite coating reinforced with functionalized graphene. The coating delivers high strength and stretchability, strong adhesion across substrates, and durable performance after heat, salt-spray, and UV aging. It also resists corrosion and provides fast, reliable strain sensing for real-time damage detection–offering a scalable protective coating for infrastructure and automotive structures.