This research direction investigates the deformation, damage evolution, and failure mechanisms of metal matrix composites (MMCs) with designed architectures. It emphasizes the interplay between structural hierarchy and energy dissipation processes. The core focus lies in establishing theoretical frameworks and predictive models that link the material's multi-scale architecture—from the matrix/reinforcement interface at the micro/nano scale to the overall composite configuration at the meso/macro scale—to its ultimate mechanical performance and damage tolerance. A key objective is to quantify the "architecture-induced" energy dissipation associated with damage mechanisms such as particle cracking, interface debonding, and matrix plasticity. The research utilizes advanced multi-scale experimental characterization (e.g., in-situ SEM/TEM mechanical testing, digital image correlation) coupled with multi-scale computational modeling (including crystal plasticity finite element method and cohesive zone modeling). The ultimate goal is to guide the rational design of architectured MMCs with superior combinations of strength, toughness, and damage resistance, thereby enabling the development of next-generation lightweight, high-performance structural materials critical for aerospace propulsion systems, thermal protection components, and advanced defense applications.
