Electrothermal Curing of Filament Wound Composite Cylinders

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Abstract
A model was developed which describes heating of filament wound composite cylinders by applying voltage across the fibers. Two situations were examined: power applied both during and after the wind, and power applied only after completion of the wind. Electrical connections in series and in parallel were modeled. The model yields temperature and cure profiles within the laminate as functions of time during and after the filament wind process. Sample calculations were performed showing the effects of geometry and power applied on the temperature, degree of cure, and manufacture time of the cylinder. The temperature, degree of cure, and manufacture time were also calculated for a filament wound cylinder cured conventionally in an oven. Assessments were made on the merits of electrothermal curing versus curing in an oven.

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