This paper presents the scientific contributions of Dr. Eliziane Medeiros Santos, whose research in Materials Science focuses on the development of sustainable high-performance composites through the reuse of industrial waste, particularly steel slag and polyethylene. By integrating physicochemical characterization, microstructural simulations, and thermoacoustic testing, her work aligns with regenerative engineering principles and addresses critical demands in aerospace and ballistic protection. The article underscores her methodological rigor, international recognition, and the relevance of her innovations for advancing circular economy practices in strategic industrial sectors.