Abstract
The cure process for graphite/epoxy composites was simulated in order to determine optimum autoclave parameters for thin laminates and honeycomb sandwich structures. In this investigation, differential scanning calorimetry (DSC) was used to determine the heat flow characteristics, and rheological dynamic spectroscopy (RDS) data defined the viscosity characteristics of two thermoset materials, Hexcel F584 and American Cyanamid Cycom 919. Resin pressure was measured within laminates and honeycomb sandwich structures during cure to provide a relationship between resin pressure and autoclave pressure. Verification RDS work was performed to demonstrate the accuracy of model predictions for standard and modified cure cycles.
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