Influence of the 3D Printing Process Settings on Tensile Strength of PLA and HT-PLA

Authors

  • Muammel M. Hanon
    Affiliation

    Mechanical Engineering Doctoral School, Szent István University, H-2100 Gödöllő, Páter Károly utca 1, Hungary
    Baquba Technical Institute, Middle Technical University (MTU), Baghdad, Iraq

  • Róbert Marczis
    Affiliation

    Institute for Mechanical Engineering Technology, Faculty of Mechanical Engineering, Szent István University, H-2100 Gödöllő, Páter Károly utca 1, Hungary

  • László Zsidai
    Affiliation

    Mechanical Engineering Doctoral School, Szent István University, H-2100 Gödöllő, Páter Károly utca 1, Hungary

https://doi.org/10.3311/PPme.13683

Abstract

Fused Deposition Modelling (FDM) is presently the most common utilized 3D printing technology. Since this printing technology makes the bodies anisotropic, therefore, investigate the process with different settings is worthwhile. Tensile test specimens of two plastics have been carried out to examine the mechanical properties. Polylactic acid (PLA) and High Temperature PLA (HT-PLA) are the used materials for this purpose. A total of seventy-two test pieces of the two used polymers were printed and evaluated. Three parameters were examined in twelve different settings when printing the tensile test specimens. The considered settings are; six raster directions, three build orientations and two filling factors. The differences in stress-strain curves, tensile strength values and elongation at break were compared among the tested samples. The broken specimens after the tensile test are illustrated, which gave insight into how the test pieces printed with different parameters were fractured. The optimum printing setting is represented at crossed 45/−45° raster direction, X orientation and 100 % fill factor, where the highest tensile strength of 59.7 MPa at HT-PLA and the largest elongation of about 3.5 % at PLA were measured.

Keywords:

3D printing settings, HT-PLA polymer, tensile test specimens

Published Online

2020-11-27

How to Cite

Hanon, M. M., Marczis, R., Zsidai, L. “Influence of the 3D Printing Process Settings on Tensile Strength of PLA and HT-PLA”, Periodica Polytechnica Mechanical Engineering, 65(1), pp. 38–46, 2021. https://doi.org/10.3311/PPme.13683

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Section

Articles