Sensitivity of Melt Pool Size and Porosity Appearing to Base Plate Preheating in Laser Powder Bed Fusion Process
The base plate temperature ranks among the crucial building parameters whose effect on melt pool dimensions and porosity defects generation has not been sufficiently discussed in literature. In the current study, with the aim to explore the dependence between melt pool dimensions, porosity defects a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Galati University Press
2022-12-01
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| Series: | Annals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology |
| Subjects: | |
| Online Access: | https://www.gup.ugal.ro/ugaljournals/index.php/awet/article/view/5530 |
| _version_ | 1797305064490008576 |
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| author | N. Hassine S. Chatti L. Kolsi |
| author_facet | N. Hassine S. Chatti L. Kolsi |
| author_sort | N. Hassine |
| collection | DOAJ |
| description | The base plate temperature ranks among the crucial building parameters whose effect on melt pool dimensions and porosity defects generation has not been sufficiently discussed in literature. In the current study, with the aim to explore the dependence between melt pool dimensions, porosity defects and base plate preheating, a 3-dimensional thermal finite element model is carried out to create IN718 single beads, at various base plate temperatures. The dimensions of the melt pool behave favourably with the base plate preheating. Indeed, the melt pool depth, width and length increase continuously with the heat of the base plate, from 20 °C to 500 °C. The melt pool width is more responsive to the base plate temperature than the melt pool depth. Numerical results also indicate that the melt dimensions become more responsive to the temperature of the base plate at a slower scan speed. The degree of porosity is predicted under multiple values of base plate temperature and the results show that porosity tends to disappear with further preheating of the base plate. A satisfying accordance between the numerical finding and the experimental results from literature is identified. |
| first_indexed | 2024-03-08T00:20:04Z |
| format | Article |
| id | doaj.art-ef151a876bbe4ee5a1c9f3366088f53f |
| institution | Directory Open Access Journal |
| issn | 1221-4639 2668-6163 |
| language | English |
| last_indexed | 2024-03-08T00:20:04Z |
| publishDate | 2022-12-01 |
| publisher | Galati University Press |
| record_format | Article |
| series | Annals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology |
| spelling | doaj.art-ef151a876bbe4ee5a1c9f3366088f53f2024-02-16T11:42:29ZengGalati University PressAnnals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology1221-46392668-61632022-12-01331112116https://doi.org/10.35219/awet.2022.11Sensitivity of Melt Pool Size and Porosity Appearing to Base Plate Preheating in Laser Powder Bed Fusion ProcessN. Hassine0S. Chatti1L. Kolsi2Laboratory of Mechanical Engineering (LGM), National Engineering School of Monastir (ENIM), University of Monastir, TunisiaLaboratory of Mechanical Engineering (LGM), National Engineering School of Monastir (ENIM), University of Monastir, Monastir, TunisiaDepartment of Mechanical Engineering, College of Engineering, University of Ha’il, Saudi Arabia & Laboratory of Metrology and Energy Systems, Department of Energy Engineering, University of Monastir, TunisiaThe base plate temperature ranks among the crucial building parameters whose effect on melt pool dimensions and porosity defects generation has not been sufficiently discussed in literature. In the current study, with the aim to explore the dependence between melt pool dimensions, porosity defects and base plate preheating, a 3-dimensional thermal finite element model is carried out to create IN718 single beads, at various base plate temperatures. The dimensions of the melt pool behave favourably with the base plate preheating. Indeed, the melt pool depth, width and length increase continuously with the heat of the base plate, from 20 °C to 500 °C. The melt pool width is more responsive to the base plate temperature than the melt pool depth. Numerical results also indicate that the melt dimensions become more responsive to the temperature of the base plate at a slower scan speed. The degree of porosity is predicted under multiple values of base plate temperature and the results show that porosity tends to disappear with further preheating of the base plate. A satisfying accordance between the numerical finding and the experimental results from literature is identified.https://www.gup.ugal.ro/ugaljournals/index.php/awet/article/view/5530laser powder bed fusionbase plate preheatingmelt pool sizeporosity defectssingle bead |
| spellingShingle | N. Hassine S. Chatti L. Kolsi Sensitivity of Melt Pool Size and Porosity Appearing to Base Plate Preheating in Laser Powder Bed Fusion Process Annals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology laser powder bed fusion base plate preheating melt pool size porosity defects single bead |
| title | Sensitivity of Melt Pool Size and Porosity Appearing to Base Plate Preheating in Laser Powder Bed Fusion Process |
| title_full | Sensitivity of Melt Pool Size and Porosity Appearing to Base Plate Preheating in Laser Powder Bed Fusion Process |
| title_fullStr | Sensitivity of Melt Pool Size and Porosity Appearing to Base Plate Preheating in Laser Powder Bed Fusion Process |
| title_full_unstemmed | Sensitivity of Melt Pool Size and Porosity Appearing to Base Plate Preheating in Laser Powder Bed Fusion Process |
| title_short | Sensitivity of Melt Pool Size and Porosity Appearing to Base Plate Preheating in Laser Powder Bed Fusion Process |
| title_sort | sensitivity of melt pool size and porosity appearing to base plate preheating in laser powder bed fusion process |
| topic | laser powder bed fusion base plate preheating melt pool size porosity defects single bead |
| url | https://www.gup.ugal.ro/ugaljournals/index.php/awet/article/view/5530 |
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