Manufacturing Technology 2020, 20(2):237-243 | DOI: 10.21062/mft.2020.029

Determination of mechanical properties of materials used for 3D printing

Josef Sedlak1, Josef Chladil1, Martin Cerny1, Ales Polzer1, Matus Varhanik1, David Dobrocky2, Zdenek Joska2, Zdenek Pokorny2
1 Department of Machining Technology, Institute of Manufacturing Technology, Faculty of Mechanical Engineering, Brno University of Technology, Technicka 2896/2, Brno 616 69, Czech Republic
2 Department of Mechanical Engineering, Faculty of Military Technology, University of Defence in Brno, Kounicova 65, Brno 602 00, Czech Republic

The presented paper deals with determination of mechanical properties of materials used for 3D printing (ABS, nylon and PLA). The theoretical part of the paper characterizes the static tensile test by which selected me-chanical properties of samples were evaluated. The practical part of the paper characterizes the additive technolo-gy Fused Deposition Modelling, by means of which standardized plastic samples were printed on the 3D printer. The practical part also deals with analysis of selected mechanical properties of samples made by Soft Tooling technolo-gy. SG 2000 and SG 145 polyurethane resins were used for the production of samples using Soft Tooling technology. Individual samples were analysed using selected tests (tensile test and hardness test). Surface integrity parameters were also determined for 3D printing test specimens. Parameters (tensile strength, tensile modulus, tensile strength and hardness) that were statistically processed were selected for each test. The paper is finished evaluating the re-sults obtained, which were compared with those given in the material sheets.

Keywords: Mechanical properties, 3D printing, Test specimen, Tensile test, Material
Grants and funding:

Specific research 2019, with the grant " Research of perspective production technologies " the Brno University of Technology, Faculty of Mechanical. Specific research project 2018FSI-S-19-6014 and by the “SV18-216” at the Department of Mechanical Engineering, University of Defence in Brno and the Project for the Development of the Organization “DZRO K201”.

Prepublished online: August 17, 2020; Published: August 18, 2020  Show citation

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Sedlak J, Chladil J, Cerny M, Polzer A, Varhanik M, Dobrocky D, et al.. Determination of mechanical properties of materials used for 3D printing. Manufacturing Technology. 2020;20(2):237-243. doi: 10.21062/mft.2020.029.
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