Tensile Properties of Additively Manufactured Continuous Glass Fiber Reinforced Onyx

Abstract:

Among all additive manufacturing techniques, fused deposition modeling (FDM) has been used the most extensively to fabricate continuous fiber reinforced polymers. Onyx, a short carbon fiber reinforced PA6 composite material developed by Markforged, has received widespread attention, and been employed as matrix in FDM-fabricated composites. This study investigates the tensile properties of continuous glass fiber (GF) reinforced Onyx (CGFRO) composites under quasi-static loading. CGFRO contains three different components, which are short carbon fiber in micrometer scale, continuous glass fiber and polyamide-d thermoplastic. The synergistic reinforcing behavior of these three components was evaluated experimentally by testing Onyx material, and CGFRO with different volume fractions of fibers (Vf). It was found that the failure mode of Onyx was different from that of GF/Onyx and the deformation modes of GF/Onyx varied with the volume fraction of glass fiber. The tensile properties of CGFRO increased with glass fiber volume fractions, where 42% Vf specimens exhibited the highest tensile modulus and strength of 10 GPa and 383 MPa, respectively, which are approximately nine times higher than that of Onyx parent material.

• Periodical: Materials Science Forum (Volume 1054)
• Pages: 15-20
• DOI: https://doi.org/10.4028/p-2tlf08
• Online since: February 2022
• Authors: Jia Hui Li, Yvonne Durandet, Xiao Dong Huang, Dong Ruan*
• Keywords: Composite, Continuous Glass Fiber, Failure Mechanism, Fused Deposition Modeling (FDM), Mechanical Performance, Short Carbon Fiber

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