Multiscale Failure Mechanism Analysis of SiC Fiber-Reinforced TC17 Composite Subjected to Transverse Tensile Loading at Elevated Temperature

This study presents a multiscale method to evaluate the transverse tensile strength and failure mechanism of SiCf/TC17 cruciform specimen machined from large-size ring. The mechanical properties were evaluated through macroscale model under loading at 200 °C. A mesoscale was developed analyze behavior composite specimen. Interfacial debonding, plastic deformation matrix cladding, damage core incorporated into mesoscopic macroscopic models. stress–strain curves fracture modes obtained numerical simulation showed good agreement with experimental curves, acoustic emission test results, morphology. results suggested that central region interface initiated first propagated outwards. Subsequently, interfacial failure, formation macro-crack developed, which led crack titanium core. Finally, cladding plastically deformed severe