A process simulation model for the manufacture of a blade-stiffened panel by the resin film infusion process

An analytical model has been developed which can be used to simulate non-isothermal infiltration of a hot-melt resin into a textile preform of complex shape. lit this study, the model was used to simulate the resin film infusion process of a single blade-stiffened panel. The development and application of the two-dimensional model are discussed. Results of the stiffened panel simulation were then used to study the effects of compaction pressure on the total resin infiltration time. Also described is the use of the model in the development of an extended processing cycle which ensures the complete infiltration of epoxy resin into the stitched graphite preform. Model predictions of temperature, resin viscosity, and extent of cure during infiltration and cure are presented and discussed.