期刊
MATERIALS
卷 11, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/ma11081382
关键词
3D printing; additive manufacturing; ANOVA; correlation coefficients; fused deposition modeling; non-parametric tests; surface roughness
类别
资金
- Mechanical and Energy Engineering research group of the University of Jaen [TEP250]
The present paper shows an experimental study on additive manufacturing for obtaining samples of polylactic acid (PLA). The process used for manufacturing these samples was fused deposition modeling (FDM). Little attention to the surface quality obtained in additive manufacturing processes has been paid by the research community. So, this paper aims at filling this gap. The goal of the study is the recognition of critical factors in FDM processes for reducing surface roughness. Two different types of experiments were carried out to analyze five printing parameters. The results were analyzed by means of Analysis of Variance, graphical methods, and non-parametric tests using Spearman's rho and Kendall's tau correlation coefficients. The results showed how layer height and wall thickness are the most important factors for controlling surface roughness, while printing path, printing speed, and temperature showed no clear influence on surface roughness.
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