About this Abstract |
| Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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| Symposium
|
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
| Presentation Title |
Predicting Melt Pool Dimensions from Local Thermal Environment Through a Modified Rosenthal Solution |
| Author(s) |
David Scott Anderson, Shawn Hinnebusch, Praveen Vulimiri, Alaaeldin Olleak, Albert C. To |
| On-Site Speaker (Planned) |
David Scott Anderson |
| Abstract Scope |
The quality of parts produced under laser powder bed fusion (LPBF) printing is strongly correlated with the geometry of the melt pool and resulting porosity. However, the melt pool geometry is heavily dependent on the local thermal environment, which is constantly changing as a result of residual heat flowing from previously scanned regions. This work proposes that the melt pool geometry and evolution falls into two distinct regimes depending on the local thermal environment, labeled “local steady state” and “non-steady state”. This work aims to define the local steady state regime through use of a modified Rosenthal solution that accounts for additional conditions previously simplified in the classical Rosenthal solution. By calibrating this new “modified Rosenthal” form on a small model, the melt pool width and depth can be predicted at a point of interest ahead of the laser for the desired end goal of in-situ melt pool control. |
| Proceedings Inclusion? |
Planned: Post-meeting proceedings |