Surface Roughness and Grain Size Variation When 3D Printing Polyamide 11 Parts Using Selective Laser Sintering
Selective laser sintering (SLS) is a well-established technology that is used for additive manufacturing. Significant efforts have been made to improve SLS by optimizing the powder deposition, laser beam parameters, and temperature settings. The purpose is to ensure homogeneous sintering and prevent...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/15/13/2967 |
| _version_ | 1797590937152520192 |
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| author | Riccardo Tonello Knut Conradsen David Bue Pedersen Jeppe Revall Frisvad |
| author_facet | Riccardo Tonello Knut Conradsen David Bue Pedersen Jeppe Revall Frisvad |
| author_sort | Riccardo Tonello |
| collection | DOAJ |
| description | Selective laser sintering (SLS) is a well-established technology that is used for additive manufacturing. Significant efforts have been made to improve SLS by optimizing the powder deposition, laser beam parameters, and temperature settings. The purpose is to ensure homogeneous sintering and prevent geometric and appearance inaccuracies in the manufactured objects. We evaluated the differences in the surface roughness and grain size of curved objects manufactured by using upcoming SLS technology that features two CO laser sources. Our analysis was carried out on polyamide 11 (PA11), which is a sustainable biobased polymer that has been gaining popularity due to its high-performance properties: its low melting point, high viscosity, and excellent mechanical properties. By using a Taguchi experimental design and analysis of variance (ANOVA), we examined the influence on the surface roughness and grain size of the build setup, the presence of thin walls, and the position of the sample on the powder bed. We found significant differences in some surface roughness and grain size measurements when these parameters were changed. |
| first_indexed | 2024-03-11T01:30:09Z |
| format | Article |
| id | doaj.art-3711ab665ee44c1b86232b4a2a1a3032 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T01:30:09Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-3711ab665ee44c1b86232b4a2a1a30322023-11-18T17:22:46ZengMDPI AGPolymers2073-43602023-07-011513296710.3390/polym15132967Surface Roughness and Grain Size Variation When 3D Printing Polyamide 11 Parts Using Selective Laser SinteringRiccardo Tonello0Knut Conradsen1David Bue Pedersen2Jeppe Revall Frisvad3Department of Applied Mathematics and Computer Science, Technical University of Denmark, 2800 Kongens Lyngby, DenmarkDepartment of Applied Mathematics and Computer Science, Technical University of Denmark, 2800 Kongens Lyngby, DenmarkDepartment of Civil and Mechanical Engineering, Technical University of Denmark, 2800 Kongens Lyngby, DenmarkDepartment of Applied Mathematics and Computer Science, Technical University of Denmark, 2800 Kongens Lyngby, DenmarkSelective laser sintering (SLS) is a well-established technology that is used for additive manufacturing. Significant efforts have been made to improve SLS by optimizing the powder deposition, laser beam parameters, and temperature settings. The purpose is to ensure homogeneous sintering and prevent geometric and appearance inaccuracies in the manufactured objects. We evaluated the differences in the surface roughness and grain size of curved objects manufactured by using upcoming SLS technology that features two CO laser sources. Our analysis was carried out on polyamide 11 (PA11), which is a sustainable biobased polymer that has been gaining popularity due to its high-performance properties: its low melting point, high viscosity, and excellent mechanical properties. By using a Taguchi experimental design and analysis of variance (ANOVA), we examined the influence on the surface roughness and grain size of the build setup, the presence of thin walls, and the position of the sample on the powder bed. We found significant differences in some surface roughness and grain size measurements when these parameters were changed.https://www.mdpi.com/2073-4360/15/13/2967additive manufacturingSLSPA11surface roughness |
| spellingShingle | Riccardo Tonello Knut Conradsen David Bue Pedersen Jeppe Revall Frisvad Surface Roughness and Grain Size Variation When 3D Printing Polyamide 11 Parts Using Selective Laser Sintering Polymers additive manufacturing SLS PA11 surface roughness |
| title | Surface Roughness and Grain Size Variation When 3D Printing Polyamide 11 Parts Using Selective Laser Sintering |
| title_full | Surface Roughness and Grain Size Variation When 3D Printing Polyamide 11 Parts Using Selective Laser Sintering |
| title_fullStr | Surface Roughness and Grain Size Variation When 3D Printing Polyamide 11 Parts Using Selective Laser Sintering |
| title_full_unstemmed | Surface Roughness and Grain Size Variation When 3D Printing Polyamide 11 Parts Using Selective Laser Sintering |
| title_short | Surface Roughness and Grain Size Variation When 3D Printing Polyamide 11 Parts Using Selective Laser Sintering |
| title_sort | surface roughness and grain size variation when 3d printing polyamide 11 parts using selective laser sintering |
| topic | additive manufacturing SLS PA11 surface roughness |
| url | https://www.mdpi.com/2073-4360/15/13/2967 |
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