This book showcases advances in composite materials, hybrid systems, and additive manufacturing, connecting scientific principles with practical industrial applications. Authored by specialists from both academia and industry, it merges foundational knowledge with practical insights. The text commences with the development of metal matrix composites and progresses to advances in additive manufacturing within the framework of industry 5.0. The discussion extends to chemical treatments of natural fibers and next-generation polymer nanocomposites aimed at achieving tribological excellence, with a focus on both performance and sustainability. It further investigates sophisticated materials for hydrogen storage utilizing hybrid materials followed by magneto-electric nanocomposites for precise drug delivery, and the effects of CdSe and ZnSe nanoparticles on P3HT, where photothermal deflection spectroscopy reveals pathways for solar cells and optoelectronic devices. Applied dimensions include performance evaluations of disc brake materials (using SolidWorks and ANSYS), innovative coatings, and environmentally friendly mono and hybrid nanoparticle cutting fluids in minimum quantity lubrication for sustainable machining. The text also delves into composite strategies for managing solar PV waste and reinforced UHMWPE for wear-resistant biomedical joint applications. By integrating perspectives from materials, manufacturing, energy, healthcare, and environmental considerations, this volume provides a thorough overview of sustainable technological progress.