Tribological Behavior of 3D-Printed PLA, PLA–Copper Composite and ABS under Dry and Lubricated SlidingPages 411-417
Stefan Miletić Abstract:
This scientific study focuses on the evaluation of the tribological properties of polymer materials (PLA, PLA reinforced with copper, and ABS). The experimental methodology involved measuring surface roughness, the coefficient of friction, and the width of the wear track. The test samples were produced using 3D printing technology, while wear experiments were performed on a TPD-93 block-on-disc tribometer. Each specimen underwent three dry friction and wear tests, along with one lubricated test, in order to compare material behavior under different operating conditions and to assess the effect of lubrication on friction and wear mechanisms, which represent essential performance indicators. The experimental input parameters were defined as follows: disc material – 50CrMo4 steel, disc radius r = 35 mm, total sliding distance s = 200 m, , sliding velocity v = 0.5 m/s, test duration t = 400 s, and normal load FN = 4 daN. For clearer analysis and interpretation, the obtained results are presented in graphical form.
Keywords: 3D printing,
PLA composite,
ABS,
Friction and wear,
Tribology
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