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http://dx.doi.org/10.9725/kts.2019.35.6.337

A Study on Tribological Properties of 3D-Printed Surface with Respect to Sliding Orientation  

Sim, Jae Woong (Department of Mechanical Engineering, Yonsei University)
Caro, Christian Nicholas De (Department of Physics & Astronomy, University of California)
Seo, Kuk-Jin (Department of Mechanical Engineering, Yonsei University)
Kim, Dae-Eun (Department of Mechanical Engineering, Yonsei University)
Publication Information
Tribology and Lubricants / v.35, no.6, 2019 , pp. 337-342 More about this Journal
Abstract
This paper presents an experimental investigation of friction and wear characteristic with respect to patterns occurring on the surface of 3D printed polymer products by fused deposition modeling method. The purpose of this study was to investigate the effect of the patterns and sliding directions on the tribological properties of 3D printed polymer surface. A cubic specimen was printed using polylactic acid filament as the printing material. Friction tests were conducted for different directions with respect to the patterns that were generated on the top and the side surfaces of the specimen, by using a ball-on-reciprocating type tribotester. SUJ2 bearing ball of which the diameter was 11 times greater than the width of the largest pattern was used as the counter surface to assess the frictional behavior. Friction tests were conducted on the top and the side surfaces with respect to the patterns in 3 (0°, 45°, 90°) different directions respectively. Coefficient of friction increased as cycles increased in all cases. The results of the tests showed that the lowest coefficient of friction was measured with the 45° sliding direction on the side surface. The wear rate was the lowest at 45° sliding direction on the side surface, while it was the highest at 0° sliding direction on the top surface. Coefficient of friction of about 0.45 was determined to be the converging value on the top compared to the side surface.
Keywords
3D printing; fused deposition modeling; pattern; polymer; tribology;
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Times Cited By KSCI : 2  (Citation Analysis)
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