Filament winding of composite cylinders
A model was developed for the analysis of the effects of the manufacturing process upon filament-wound cylinders made of a thermoset matrix composite. The model relates the process variables (winding speed, fiber tension, applied temperature) to the parameters characterizing the composite cylinder and the mandrel. The model is applicable to cylinders for which the diameter is large compared to the wall thickness. The model was implemented in a user-friendly computer code suitable for generating numerical results. During the winding and the subsequent oven curing the model and the corresponding code provide: (i) the temperature throughout the cylinder and mandrel, (ii) the degree of cure throughout the cylinder, (iii) the viscosity throughout the cylinder, (iv) the fiber positions, (v) the fiber tensions, (vi) the stresses and strains throughout the cylinder and mandrel, and (vii) the porosity throughout the cylinder. Tests were performed to validate the model. In these tests 3, 4 and 6 inch internal diameter cylinders were wound using Hercules and Fiberite graphite-epoxy tows. The temperatures and strains inside these cylinders were measured. The measured temperatures and strains were compared to those computed by the computer simulation. Good agreements were found between the data and the results of this model, indicating that the model is a useful representation of the process. A sample problem is also presented which demonstrates what information can be generated by the model. The use of the model in the selection of the proper process variable values is also briefly discussed.
- Research Organization:
- Stanford Univ., CA (USA)
- OSTI ID:
- 6422306
- Resource Relation:
- Other Information: Thesis (Ph.D)
- Country of Publication:
- United States
- Language:
- English
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