Effect of shells number and machining on selected properties of 3D-printed PLA samples

Natalia Kowalska; Paweł  Szczygieł; Michał  Skrzyniarz; Sławomir  Błasiak

doi:10.14314/polimery.2024.3.6

Published : 2024-04-17

Vol. 69 No. 3 (2024)

Effect of shells number and machining on selected properties of 3D-printed PLA samples

Natalia Kowalska https://orcid.org/0000-0003-3043-7812 Paweł Szczygieł https://orcid.org/0000-0002-3113-3557 Michał Skrzyniarz https://orcid.org/0000-0003-4590-5842 Sławomir Błasiak https://orcid.org/0000-0001-7333-4026

DOI: https://doi.org/10.14314/polimery.2024.3.6

Abstract

Effect of shells number (1–5) on tensile properties of PLA samples printed using the FDM/FFF technique was investigated. The crack surface was also analyzed. The best properties were obtained for 4-shell sample. However, due to the large coefficient of variation (>> 10%) in the case of elongation, 3-shell sample was selected for testing the machining impact. Such a large coefficient of variation can be explained by the presence of voids between the layers. The greater the number of layers, the greater the structure defects. Machining increases surface smoothness while reducing tensile strength and practically unchanged elongation at break.

Keywords

FDM ; FFF ; PLA ; tensile properties ; machining FDM ; FFF ; PLA ; wytrzymałość na rozciąganie ; obróbka skrawaniem

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Kowalska, N., Szczygieł, P. ., Skrzyniarz, M. ., & Błasiak, S. . (2024). Effect of shells number and machining on selected properties of 3D-printed PLA samples. Polimery, 69(3), 186-190. https://doi.org/10.14314/polimery.2024.3.6

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Natalia Kowalska nkowalska@tu.kielce.pl
https://orcid.org/0000-0003-3043-7812

Affiliation
Kielce University of Technology, Faculty of Mechatronics and Mechanical Engineering, Tysiaclecia Państwa Polskiego 7 Ave., 25-314 Kielce, Poland

Paweł Szczygieł
https://orcid.org/0000-0002-3113-3557

Affiliation
Kielce University of Technology, Faculty of Mechatronics and Mechanical Engineering, Tysiaclecia Państwa Polskiego 7 Ave., 25-314 Kielce, Poland

Michał Skrzyniarz
https://orcid.org/0000-0003-4590-5842

Affiliation
Kielce University of Technology, Faculty of Mechatronics and Mechanical Engineering, Tysiaclecia Państwa Polskiego 7 Ave., 25-314 Kielce, Poland

Sławomir Błasiak
https://orcid.org/0000-0001-7333-4026

Affiliation
Kielce University of Technology, Faculty of Mechatronics and Mechanical Engineering, Tysiaclecia Państwa Polskiego 7 Ave., 25-314 Kielce, Poland