About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Exploring the Impact of Pre- and Post-heating on Residual Stresses in Laser-directed Energy Deposition: A Numerical Investigation |
Author(s) |
Usman Tariq, Sung-Heng Wu, Muhammad Arif Mahmood, Frank Liou |
On-Site Speaker (Planned) |
Usman Tariq |
Abstract Scope |
Laser Directed Energy Deposition (DED) is a technique that utilizes a laser to create a melt pool and deposit layers of material by pouring powder into it. During the DED process, the laser induces local heating, leading to localized deformation and residual stresses due to temperature variations. These factors can significantly contribute to premature failure of in-service parts. Based on the need, this study aims to explore pre- and post-heating techniques during the DED process, aimed at mitigating the temperature differential before and after deposition. Additionally, the study investigates various pre-heating and post-heating temperatures to determine the most suitable scenario for reducing residual stresses within the final part. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |