Resin film infiltration (RFI) process is a widely used integrated manufacturing technology in composite material molding

which is very suitable for manufacturing large

reinforced

and complex aviation structural components. This article selected a typical composite hat stiffened panel

completed the integrated design of the fixture structure and process flow

and simulated the resin penetration process under different resin film positions and curing pressures. Based on the simulation results

reasonable resin film positions and curing pressures were selected. Finally

process experiments were completed according to the selected scheme

and the apparent quality and non-destructive testing of the typical parts were qualified

verifying the effectiveness of RFI integrated design and  simulation analysis for hat stiffened panel.