The Impact of Process Parameters on Surface Roughness and Dimensional Accuracy during CO<sub>2</sub> Laser Cutting of PMMA Thin Sheets
This study investigated the impact of the laser speed and power, and the position and orientation of the samples, on the average surface roughness (Ra) and dimensional accuracy (DA) during CO<sub>2</sub> laser cutting of polymethyl methacrylate (PMMA) thin sheets. A mixed five-parameter...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Journal of Manufacturing and Materials Processing |
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| Online Access: | https://www.mdpi.com/2504-4494/5/3/74 |
| _version_ | 1797518661585469440 |
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| author | Konstantinos Ninikas John Kechagias Konstantinos Salonitis |
| author_facet | Konstantinos Ninikas John Kechagias Konstantinos Salonitis |
| author_sort | Konstantinos Ninikas |
| collection | DOAJ |
| description | This study investigated the impact of the laser speed and power, and the position and orientation of the samples, on the average surface roughness (Ra) and dimensional accuracy (DA) during CO<sub>2</sub> laser cutting of polymethyl methacrylate (PMMA) thin sheets. A mixed five-parameter fractional factorial design was applied, and thirty-six measurements for the Ra and DA were obtained. The experimental results were analysed using ANOM diagrams, ANOVA analysis and interaction plots of all parameters. It was concluded that the laser speed is the critical parameter for both surface roughness and dimensional accuracy, resulting in strong interactions with laser power and positioning parameters. It was also shown that Ra values are affected by the orientation of the specimen and can be minimized when the samples are aligned in the laser travel direction. Finally, it was proved that lower laser speed improves the average roughness but reduces the dimensional accuracy. |
| first_indexed | 2024-03-10T07:32:52Z |
| format | Article |
| id | doaj.art-6ce195196a0c40cfbeea685260a58031 |
| institution | Directory Open Access Journal |
| issn | 2504-4494 |
| language | English |
| last_indexed | 2024-03-10T07:32:52Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Manufacturing and Materials Processing |
| spelling | doaj.art-6ce195196a0c40cfbeea685260a580312023-11-22T13:44:47ZengMDPI AGJournal of Manufacturing and Materials Processing2504-44942021-07-01537410.3390/jmmp5030074The Impact of Process Parameters on Surface Roughness and Dimensional Accuracy during CO<sub>2</sub> Laser Cutting of PMMA Thin SheetsKonstantinos Ninikas0John Kechagias1Konstantinos Salonitis2Design and Manufacturing Laboratory, Department of Forestry, Wood Science and Design, University of Thessaly, 43100 Karditsa, GreeceDesign and Manufacturing Laboratory, Department of Forestry, Wood Science and Design, University of Thessaly, 43100 Karditsa, GreeceManufacturing Department, Cranfield University, Cranfield MK10 7GT, UKThis study investigated the impact of the laser speed and power, and the position and orientation of the samples, on the average surface roughness (Ra) and dimensional accuracy (DA) during CO<sub>2</sub> laser cutting of polymethyl methacrylate (PMMA) thin sheets. A mixed five-parameter fractional factorial design was applied, and thirty-six measurements for the Ra and DA were obtained. The experimental results were analysed using ANOM diagrams, ANOVA analysis and interaction plots of all parameters. It was concluded that the laser speed is the critical parameter for both surface roughness and dimensional accuracy, resulting in strong interactions with laser power and positioning parameters. It was also shown that Ra values are affected by the orientation of the specimen and can be minimized when the samples are aligned in the laser travel direction. Finally, it was proved that lower laser speed improves the average roughness but reduces the dimensional accuracy.https://www.mdpi.com/2504-4494/5/3/74CO<sub>2</sub> laser cuttingPMMAsurface roughnessdimensional accuracystatistical modelling |
| spellingShingle | Konstantinos Ninikas John Kechagias Konstantinos Salonitis The Impact of Process Parameters on Surface Roughness and Dimensional Accuracy during CO<sub>2</sub> Laser Cutting of PMMA Thin Sheets Journal of Manufacturing and Materials Processing CO<sub>2</sub> laser cutting PMMA surface roughness dimensional accuracy statistical modelling |
| title | The Impact of Process Parameters on Surface Roughness and Dimensional Accuracy during CO<sub>2</sub> Laser Cutting of PMMA Thin Sheets |
| title_full | The Impact of Process Parameters on Surface Roughness and Dimensional Accuracy during CO<sub>2</sub> Laser Cutting of PMMA Thin Sheets |
| title_fullStr | The Impact of Process Parameters on Surface Roughness and Dimensional Accuracy during CO<sub>2</sub> Laser Cutting of PMMA Thin Sheets |
| title_full_unstemmed | The Impact of Process Parameters on Surface Roughness and Dimensional Accuracy during CO<sub>2</sub> Laser Cutting of PMMA Thin Sheets |
| title_short | The Impact of Process Parameters on Surface Roughness and Dimensional Accuracy during CO<sub>2</sub> Laser Cutting of PMMA Thin Sheets |
| title_sort | impact of process parameters on surface roughness and dimensional accuracy during co sub 2 sub laser cutting of pmma thin sheets |
| topic | CO<sub>2</sub> laser cutting PMMA surface roughness dimensional accuracy statistical modelling |
| url | https://www.mdpi.com/2504-4494/5/3/74 |
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