Determination of the influence of infill pattern and fiberglass reinforcement on the tensile properties of additively manufactured material by FDM technology

FDM technology is among the most widely used additive manufacturing technologies. The most popular materials are ABS and PLA, but lately nylon has been used more often. The aim of the paper is to determine the impact of infill pattern and continuous fiberglass reinforcement on the tensile properties of additively manufactured composite material. The samples were made of Onyx as matrix material on a Markforged Onyx Pro printer, with and without varying fiberglass volume fraction. In addition, five different infill patterns (solid, triangular, rectangular, hexagonal and gyroid) were investigated. The experimental results revealed that infill patterns have different effects on the tensile strength and elastic behavior of the material, but the consumption of material and time should also be considered. The use of continuous fiberglass reinforcement significantly improves the tensile characteristics of the material. Proper arrangement of fibers in multiple layers can give better tensile properties of the material.