Analysis of FDM extrusion head design as application reinforced composite materials productions
The main cause of the work is insufficient knowledge about tribological properties of polymer composites with reinforcement in the form of short fibers, for use in possible additive manufacturing technologies. Fused filament fab-rication (FFF) is a 3D printing technique which allows layer-by-layer build-up of a part by the deposition of thermoplastic material through a nozzle. The work presents the construction of an extrusion head that allows obtaining a composite with a matrix in the form of a thermoplastic material reinforced with carbon fiber evenly spaced along the extrusion axis. The results of the simulation matrix material flow in the nozzle as well as the results of numerical analysis of the production of polymer composite with carbon fiber in the extrusion head are presented. An analysis of the mixing process matrix material in the designed system was carried out and own conclusions were developed. The tests were carried out with different amounts of the PLA matrix material fed in at both entrances to the extrusion head. The validity of matrix material feeder work program was confirmed. Dependence of mixing of thermoplastic materials and compliance with computer simulations was demonstrated.
KeywordsFRCP FFF Additive Manufacturing
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