3D Printed Composites With Continuous Carbon Fiber Reinforcements

Abstract

Additively manufactured polymers can be reinforced with high-performance reinforcements such as carbon fibers. Printed thermoplastics with embedded continuous carbon fibers are up to two orders of magnitude stronger and stiffer than high-grade 3D printed polymers. In this work, the mechanical response of such 3D printed carbon fiber specimens is evaluated. While the precursor carbon fiber reinforced filaments achieve a stiffness of 50GPa and strength 700MPa, mechanical properties of their printed parts are highly affected by printed carbon fiber curvatures. In this work, the structure of 3D printed parts was examined, and some design rules for 3D printing with continuous carbon fibers are suggested. Moreover, failure mechanisms in these samples are discussed and correlated to the micro-structure of the composites and the carbon fiber configuration.

Additive Manufacturing of Polymer-Based Composites Using Fused Filament Fabrication (FFF): a Review

“…39 The fiber pullout phenomenon in the 3D printed carbon fiber reinforced Nylon composite [47] Fig. 40 Post fracture microscopy observation 3D printed carbon fiber reinforced Nylon composite samples showing fiber pullout [48] into account. The stated samples were printed by consideration of the different configurations for fiber orientation.…”

“…Ali N. Sarvestani et al [48] studied the effects of volume fraction and fiber orientation on mechanical properties of the manufactured carbon fiber reinforced polymer composites (CFRP) by FFF. Post fracture microscopy observations (Fig.…”

“…Tensile test results and prevalent damage modes of the 3D printed carbon fiber reinforced Nylon composite samples, by Mark Two, Markforged[48] …”

The influences of international standards on structural performance and fracture behaviour of 3D printed long fiber composite structures

“…The development of using composite fibers in the production of additive manufactured parts increases the functionality of the parts due to the improvement of the parts' properties [6]. Therefore, to have high-performance additive manufactured polymer products with high strength, reinforcing with high-performance reinforcement composite polymers is important [7]. Reinforcement of 3D-printed polymers can be done Using both IOP Publishing doi:10.1088/1757-899X/1294/1/012048 2 long and segmented fiber reinforcement.…”