Influence of Composition on Mechanical Properties of Additively Manufactured Composites Reinforced with Endless Carbon Fibers

Abstract:

Additive manufacturing of endless carbon fiber-reinforced composites is a technology which produces parts with mechanical properties similar to those of additively-manufactured metallic parts. In this work, the influence of layer height and width on mechanical properties of additively-manufactured carbon fiber-reinforced polymer composites has been studied. Two different 3k carbon fibers have been used as reinforcement. The composites are printed by material extrusion technology with layer heights of 0.2, 0.3, and 0.4 mm and layer widths of 1.0, 1.2, and 1.7 mm. The composites possess higher flexural strength at smaller layer height and the flexural modulus is dependent on the fiber volume content. The formation of voids/defects decreases the mechanical properties of composite and should be optimized.

• Periodical: Key Engineering Materials (Volume 809)
• Pages: 335-340
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.809.335
• Online since: June 2019
• Authors: Mathias Czasny*, Oliver Goerke, Onur Kaba, Stephan Koerber, Franziska Schmidt, Aleksander Gurlo
• Keywords: 3D Printing, Additive Manufacturing, Carbon Fiber, Material Extrusion, Polyamide, Thermoplastic Composite

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