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Structure Control in Fiber Reinforced Polymer Composites in Additive Manufacturing Technologies

Prusinowski A., Kaczyński R.

Machine Dynamics Research

2018

Vol. 42, No. 3

17--25

The main reason for the authors to discuss the subject is the need to ﬁll the gaps in the knowledge regarding the abrasive wear of polymer composites with reinforcement in the form of short carbon ﬁbers that can be used in additive manufacturing technologies. The illustrated design of the extrusion head makes it possible to obtain a composite with a matrix in the form of a thermoplastic and reinforcement as carbon ﬁbers evenly spaced along the extrusion axis. The results of the simulation of heat propagation in the extrusion head and the ﬂow of the matrix material in the nozzle are shown. This paper presents the research on the mixing process of the matrix material in the designed system and describes further planned tests. The output materials were obtained at various amounts of the PLA matrix material fed in at both entrances to the extrusion head. Mixing of materials has been shown by obtaining different colors of the outgoing material using two different colors of one type of input material.