Discontinuous Fiber Composites (DFCs) represent a viable solution for the cost-effective design of secondary structures and components for aeronautical applications. One of the challenging hindering the widespread use of these materials is the limited understanding of the effect of the manufacturing process and platelet size on the mechanical performance. The goal of this project is to fill this knowledge gap by performing a comprehensive set of experimental characterizations and numerical simulations devoted to a thorough investigation on structural performances of DFCs. We aim to characterize the main failure mechanisms and develop a physically-based computational modeling of DFCs. The findings of this study will contribute to the safety and certification of DFC structures.