2024/09/09 by Ouazzani, K., Akhrif, I., Rihani, N. +3
paper · doi:10.48317/imist.prsm/morjchem-v12i4.50175
Thanks to its multiple advantages, Additive Manufacturing (AM) generally and particularly Fused Deposition Modeling (FDM) have gained significant attention during the last decades; FDM is known for its easy instructions and user-friendly features, yet still requires research to improve various aspects, including mechanical properties. Therefore, the purpose of this work is to further comprehend the effect of process parameters, viz layer thickness, extrusion temperature, printing speed, post-processing heat treatment, and tensile test speed on tensile characteristics of ABS-FDM printed dog-bone samples. In addition, Taguchi design was adopted for ensuring statistically ensure significant experiments. While the Hooke’s law provided a classical solution for the elastic phase, plastic area constitutive models were then unidentified among a list of competitive models. Using minimal least square error method, the best plastic model was a variety of Ludwik equation which was rarely found in the literature. The investigated outputs were elasticity Modulus, ultimate tensile strength, strain hardening coefficient and exponent. Additionally to the empirical analysis, each response was statistically examined using various tools, mainly S/N main effects, interaction plots and the Analysis of Variance. While Layer thickness and Heat treatment were the most relevant for all outputs, extrusion temperature was only for the hardening exponent. On the other hand, the tensile test speed rate and printing speed were found to influence all outputs except Young modulus. Future works will dive into stress-strain energy analysis and its relationship with the mesoscale character along with choc/damping properties.