| 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)
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| Presentation Title |
Elucidating the Role of Local Preheat Temperature on Multi-track Melt Pool Morphology Variation for Inconel 718 Laser Powder Bed Fusion via CIFEM |
| Author(s) |
Seth T. Strayer, William Frieden Templeton, Alaaeldin Olleak, Florian Dugast, Sneha Narra, Albert To |
| On-Site Speaker (Planned) |
Seth T. Strayer |
| Abstract Scope |
Despite advancements in finite element (FE) thermal simulation techniques for laser powder bed fusion (L-PBF), these models employ an effective heat source model, which invokes a tedious calibration process and provides inaccurate thermal fields compared to high-fidelity computational fluid dynamics (CFD) simulations. Accordingly, the driving force behind melt pool size variation, especially in the multi-track case, has remained enigmatic up to this point. In this work, the authors extend CIFEM to multi-track scenarios for Inconel 718 L-PBF to help address these issues. CIFEM's data-driven heat source model is trained to predict the thermal fields from multi-track CFD simulations with different scan lengths to establish the role of a local preheat temperature metric. By imposing these fields on the desired FE solution domain, the simulated melt pool sizes are within 10% error regarding experimental measurements up to five consecutive tracks while providing substantially more accurate thermal fields to traditional FE models. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |