Analysis of pultrusion processing for long fiber reinforced thermoplastic composite system
Pultrusion is one of the composite processing technology, commonly recognized as a simple and cost-effective means for the manufacturing of fiber-reinforced, resin matrix composite parts with different regular geometries. Previously, because the majority of the pultruded composite parts were made of thermosetting resin matrix, emphasis of the analysis on the process has been on the conservation of energy from various sources, such as heat conduction and the curing kinetics of the resin system. Analysis on the flow aspect of the process was almost absent in the literature for thermosetting process. With the increasing uses of thermoplastic materials, it is desirable to obtain the detailed velocity and pressure profiles inside the pultrusion die. Using a modified Darcy's law for flow through porous media, closed form analytical solutions for the velocity and pressure distributions inside the pultrusion die are obtained for the first time. This enables the estimation of the magnitude of viscous dissipation and it's effects on the pultruded parts. Pulling forces refined in the pultrusion processing are also analyzed. The analytical model derived in this study can be used to advance the knowledge and control of the pultrusion process for fiber reinforced thermoplastic composite parts.
- Research Organization:
- Old Dominion Univ., Norfolk, VA (United States)
- OSTI ID:
- 5438340
- Report Number(s):
- N-94-17766; NASA-CR--194504; NAS--1.26:194504; CNN: NAG1-363
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360601* -- Other Materials-- Preparation & Manufacture
DIES
FIBERS
FLOW MODELS
FLUID FLOW
MATERIALS
MATHEMATICAL MODELS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERS
PROCESSING
REINFORCED MATERIALS
REINFORCED PLASTICS
RESINS
SYNTHETIC MATERIALS
THERMOPLASTICS
VISCOUS FLOW