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Influence of Print Orientation on Surface Roughness in Fused Deposition Modeling (FDM) Processes

In the present paper, we address the influence of print orientation angle on surface roughness obtained in lateral walls in fused deposition modelling (FDM) processes. A geometrical model is defined that considers the shape of the filaments after deposition, in order to define a theoretical roughnes...

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Autores principales: Buj-Corral, Irene, Domínguez-Fernández, Alejandro, Durán-Llucià, Ramón
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6926983/
https://www.ncbi.nlm.nih.gov/pubmed/31766409
http://dx.doi.org/10.3390/ma12233834
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author Buj-Corral, Irene
Domínguez-Fernández, Alejandro
Durán-Llucià, Ramón
author_facet Buj-Corral, Irene
Domínguez-Fernández, Alejandro
Durán-Llucià, Ramón
author_sort Buj-Corral, Irene
collection PubMed
description In the present paper, we address the influence of print orientation angle on surface roughness obtained in lateral walls in fused deposition modelling (FDM) processes. A geometrical model is defined that considers the shape of the filaments after deposition, in order to define a theoretical roughness profile, for a certain print orientation angle. Different angles were considered between 5° and 85°. Simulated arithmetical mean height of the roughness profile, Ra values, were calculated from the simulated profiles. The Ra simulated results were compared to the experimental results, which were carried out with cylindrical PLA (polylactic acid) samples. The simulated Ra values were similar to the experimental values, except for high angles above 80°, where experimental roughness decreased while simulated roughness was still high. Low print orientation angles show regular profiles with rounded peaks and sharp values. At a print orientation angle of 85°, the shape of the profile changes with respect to lower angles, showing a gap between adjacent peaks. At 90°, both simulated and experimental roughness values would be close to zero, because the measurement direction is parallel to the layer orientation. Other roughness parameters were also measured: maximum height of profile, Rz, kurtosis, Rku, skewness, Rsk, and mean width of the profile elements, Rsm. At high print orientation angles, Rz decreases, Rku shifts to positive, Rsk slightly increases, and Rsk decreases, showing the change in the shape of the roughness profiles.
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spelling pubmed-69269832019-12-24 Influence of Print Orientation on Surface Roughness in Fused Deposition Modeling (FDM) Processes Buj-Corral, Irene Domínguez-Fernández, Alejandro Durán-Llucià, Ramón Materials (Basel) Article In the present paper, we address the influence of print orientation angle on surface roughness obtained in lateral walls in fused deposition modelling (FDM) processes. A geometrical model is defined that considers the shape of the filaments after deposition, in order to define a theoretical roughness profile, for a certain print orientation angle. Different angles were considered between 5° and 85°. Simulated arithmetical mean height of the roughness profile, Ra values, were calculated from the simulated profiles. The Ra simulated results were compared to the experimental results, which were carried out with cylindrical PLA (polylactic acid) samples. The simulated Ra values were similar to the experimental values, except for high angles above 80°, where experimental roughness decreased while simulated roughness was still high. Low print orientation angles show regular profiles with rounded peaks and sharp values. At a print orientation angle of 85°, the shape of the profile changes with respect to lower angles, showing a gap between adjacent peaks. At 90°, both simulated and experimental roughness values would be close to zero, because the measurement direction is parallel to the layer orientation. Other roughness parameters were also measured: maximum height of profile, Rz, kurtosis, Rku, skewness, Rsk, and mean width of the profile elements, Rsm. At high print orientation angles, Rz decreases, Rku shifts to positive, Rsk slightly increases, and Rsk decreases, showing the change in the shape of the roughness profiles. MDPI 2019-11-21 /pmc/articles/PMC6926983/ /pubmed/31766409 http://dx.doi.org/10.3390/ma12233834 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Buj-Corral, Irene
Domínguez-Fernández, Alejandro
Durán-Llucià, Ramón
Influence of Print Orientation on Surface Roughness in Fused Deposition Modeling (FDM) Processes
title Influence of Print Orientation on Surface Roughness in Fused Deposition Modeling (FDM) Processes
title_full Influence of Print Orientation on Surface Roughness in Fused Deposition Modeling (FDM) Processes
title_fullStr Influence of Print Orientation on Surface Roughness in Fused Deposition Modeling (FDM) Processes
title_full_unstemmed Influence of Print Orientation on Surface Roughness in Fused Deposition Modeling (FDM) Processes
title_short Influence of Print Orientation on Surface Roughness in Fused Deposition Modeling (FDM) Processes
title_sort influence of print orientation on surface roughness in fused deposition modeling (fdm) processes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6926983/
https://www.ncbi.nlm.nih.gov/pubmed/31766409
http://dx.doi.org/10.3390/ma12233834
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