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Effects of 3D-printed PLA material with different filling densities on coefficient of friction performance

Effects of 3D-printed PLA material with different filling densities on coefficient of friction... The purpose of this study is the investigation of the friction performance of 3D-printed polylactic acid (PLA) at different infill densities.Design/methodology/approachPLA samples were printed with fused filament fabrication (FFF). Friction performance test of PLA samples were performed under 18 N load at 20 min, 40 min and 60 min using a pin-on-disc tester. Diameter deviation, hardness of 3D-printed PLA, weight variation, coefficient of friction, temperature and wear images were chosen as performance criteria.FindingsThe hardness values of the samples with 30%, 50% and 70% infill density were determined as 93.9, 99.93 and 102.67 Shore D, respectively. The friction of coefficient values obtained in these samples at 20 min, 40 min and 60 min were measured as 0.5737, 0.4454 and 0.3824, respectively. The least deformation occurred in the sample with 50% occupancy rate and during the test period of 20 min.Practical implicationsThe aim of this study was to determine the best friction performance of 3D-printed biodegradable and biocompatible PLA with different infill densities.Originality/valueIn the literature, several studies can be found on the mechanical characteristics of 3D-printed parts produced with PLA. However, investigations on the wear characterisation of these parts are very limited. In this regard, the friction coefficient results obtained from different infill density of 3D-printed PLA used in this study will significantly contribute to the literature. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Rapid Prototyping Journal Emerald Publishing

Effects of 3D-printed PLA material with different filling densities on coefficient of friction performance

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Publisher
Emerald Publishing
Copyright
© Emerald Publishing Limited
ISSN
1355-2546
eISSN
1355-2546
DOI
10.1108/rpj-03-2022-0081
Publisher site
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Abstract

The purpose of this study is the investigation of the friction performance of 3D-printed polylactic acid (PLA) at different infill densities.Design/methodology/approachPLA samples were printed with fused filament fabrication (FFF). Friction performance test of PLA samples were performed under 18 N load at 20 min, 40 min and 60 min using a pin-on-disc tester. Diameter deviation, hardness of 3D-printed PLA, weight variation, coefficient of friction, temperature and wear images were chosen as performance criteria.FindingsThe hardness values of the samples with 30%, 50% and 70% infill density were determined as 93.9, 99.93 and 102.67 Shore D, respectively. The friction of coefficient values obtained in these samples at 20 min, 40 min and 60 min were measured as 0.5737, 0.4454 and 0.3824, respectively. The least deformation occurred in the sample with 50% occupancy rate and during the test period of 20 min.Practical implicationsThe aim of this study was to determine the best friction performance of 3D-printed biodegradable and biocompatible PLA with different infill densities.Originality/valueIn the literature, several studies can be found on the mechanical characteristics of 3D-printed parts produced with PLA. However, investigations on the wear characterisation of these parts are very limited. In this regard, the friction coefficient results obtained from different infill density of 3D-printed PLA used in this study will significantly contribute to the literature.

Journal

Rapid Prototyping Journal – Emerald Publishing

Published: Jan 2, 2023

Keywords: Wear; PLA; Coefficient of friction; Fused filament fabrication

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