Abstract
A 3D model was developed which is used to simulate the RFI manufacturing process of complex shaped composite structures. The model is comprehensive and includes submodels which describe resin flow, heat transfer, preform compaction, and resin kinetics during the RFI process. Experiments were performed to characterize the stitched preform and obtain data for verification of the model. In the verification experiment, a complex shaped stitched preform was resin infiltrated and cured in an instrumented mold which included in situ FDEMS sensors to monitor the flow front position and the state of the resin cure. Results of the verification experiment indicate that the model can accurately predict the thermal behavior of the preform/tool assembly. The model-predicted wet-out times were higher than the sensor measured values, possibly due to resin leakage from the ends of the preform. (Author)
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