Investigation of effects of printing patterns on geometry and densification of stainless steel 316L through directed energy deposition
Directed energy deposition (DED) is an additive manufacturing process where metal wire or powder is added onto an object or substrate through melting of the filler material. Unlike the selective laser melting (SLM) process, where powder is applied onto a bed before laser melting occurs, DED melts t...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
| Published: |
2018
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| Online Access: | https://hdl.handle.net/10356/88504 http://hdl.handle.net/10220/45824 |
| _version_ | 1826125944596725760 |
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| author | Lim, Joel Choon Wee Wong, Chee How |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Lim, Joel Choon Wee Wong, Chee How |
| author_sort | Lim, Joel Choon Wee |
| collection | NTU |
| description | Directed energy deposition (DED) is an additive manufacturing process where metal wire
or powder is added onto an object or substrate through melting of the filler material. Unlike the selective laser melting (SLM) process, where powder is applied onto a bed before laser melting occurs, DED melts the powder midstream. The molten particles are deposited into the melt pool which rapidly cools due to the laser traversing away. To build a part, the laser will overlap different layers with same stepover and printing patterns. However due to the nature of the printing patterns the time taken to print is usually different which results in non-uniformity in formation of structures. This experiment investigates the effects of powder flow rate, feedback loop system, laser power, and print patterns on the geometry and densification of SS316L powder. |
| first_indexed | 2024-10-01T06:44:40Z |
| format | Conference Paper |
| id | ntu-10356/88504 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:44:40Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/885042020-09-24T20:13:26Z Investigation of effects of printing patterns on geometry and densification of stainless steel 316L through directed energy deposition Lim, Joel Choon Wee Wong, Chee How School of Mechanical and Aerospace Engineering Proceedings of the 3rd International Conference on Progress in Additive Manufacturing (Pro-AM 2018) Singapore Centre for 3D Printing 3D Printing Additive Manufacturing DRNTU::Engineering::Mechanical engineering::Prototyping Directed energy deposition (DED) is an additive manufacturing process where metal wire or powder is added onto an object or substrate through melting of the filler material. Unlike the selective laser melting (SLM) process, where powder is applied onto a bed before laser melting occurs, DED melts the powder midstream. The molten particles are deposited into the melt pool which rapidly cools due to the laser traversing away. To build a part, the laser will overlap different layers with same stepover and printing patterns. However due to the nature of the printing patterns the time taken to print is usually different which results in non-uniformity in formation of structures. This experiment investigates the effects of powder flow rate, feedback loop system, laser power, and print patterns on the geometry and densification of SS316L powder. Published version 2018-09-05T05:10:31Z 2019-12-06T17:04:42Z 2018-09-05T05:10:31Z 2019-12-06T17:04:42Z 2018 Conference Paper Lim, J. C. W., & Wong, C. H. (2018). Investigation of effects of printing patterns on geometry and densification of stainless steel 316L through directed energy deposition. Proceedings of the 3rd International Conference on Progress in Additive Manufacturing (Pro-AM 2018), 268-273. doi:10.25341/D4B88P https://hdl.handle.net/10356/88504 http://hdl.handle.net/10220/45824 10.25341/D4B88P en © 2018 Nanyang Technological University. Published by Nanyang Technological University, Singapore. 6 p. application/pdf |
| spellingShingle | 3D Printing Additive Manufacturing DRNTU::Engineering::Mechanical engineering::Prototyping Lim, Joel Choon Wee Wong, Chee How Investigation of effects of printing patterns on geometry and densification of stainless steel 316L through directed energy deposition |
| title | Investigation of effects of printing patterns on geometry and densification of stainless steel 316L through directed energy deposition |
| title_full | Investigation of effects of printing patterns on geometry and densification of stainless steel 316L through directed energy deposition |
| title_fullStr | Investigation of effects of printing patterns on geometry and densification of stainless steel 316L through directed energy deposition |
| title_full_unstemmed | Investigation of effects of printing patterns on geometry and densification of stainless steel 316L through directed energy deposition |
| title_short | Investigation of effects of printing patterns on geometry and densification of stainless steel 316L through directed energy deposition |
| title_sort | investigation of effects of printing patterns on geometry and densification of stainless steel 316l through directed energy deposition |
| topic | 3D Printing Additive Manufacturing DRNTU::Engineering::Mechanical engineering::Prototyping |
| url | https://hdl.handle.net/10356/88504 http://hdl.handle.net/10220/45824 |
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