| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Part Scale Simulation of Heat Affected Zones for Parameter Optimization in a Microscale Selective Laser Sintering System |
| Author(s) |
Joshua Grose, Farzana Tasnim, Michael Cullinan |
| On-Site Speaker (Planned) |
Joshua Grose |
| Abstract Scope |
The Microscale Selective Laser Sintering (μ-SLS) system can produce feature sizes on the order of a single micrometer, far smaller than existing additive technologies. Despite this advantage, there are challenges in producing reliable small-scale parts due to unwanted heat transfer in the nanoparticle particle bed. To address this issue, a multiscale Finite Element thermal model has been developed to predict the temperature changes that occur during sintering within the particle bed. Nanoscale particle models are used to quantify material property changes experience by particle groups that undergo laser sintering. This work processes the property relationships developed by the particle models and integrates a comprehensive property function into the part-scale model to capture the nuanced thermal evolution that occurs during sintering. The multiscale model predicts the extent of heat spread during sintering to optimize input laser parameters, reduce unwanted heat spread, and improve the minimum feature resolution of printable parts. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |