Investigation of tensile properties of PLA-brass composite using FDM

Fused deposition modeling (FDM) is an additive manufacturing technique used to build complete three-dimensional models from a range of materials for various applications. Brass alloys as an additive were found to be noteworthy composites used in additive manufacturing. Till date, limited research data are available on the tensile properties of PLA-brass composites manufactured using the FDM process. As such, the present research investigates the tensile properties of brass-PLA composite at various infill patterns and compositions (15% and 70%). The significant parameter affecting the mechanical parameters was determined using response surface methodology (RSM). Mechanical qualities were mathematically modeled using the response surface methodology, anticipating the needed output value for various compositions, and infill patterns. In conclusion, for the tensile test, the concentric pattern achieves the highest value for elastic modulus, ultimate tensile strength, and yield strength (0.2% offset) for both compositions and the octa-spiral pattern has the weakest properties. The highest value of elastic modulus, ultimate tensile strength, and yield strength (0.2% offset) obtained was 0.333 GPa, 7.758 MPa and 4.539 MPa, respectively. The higher infill composition was found to decreases the tensile behavior of the composite. Adapting RSM, a mathematical model to estimate tensile properties has also been developed to ease the future FDM printed PLA-brass tensile properties.