About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
Layerwise Thermal Process Simulation for Laser Powder Bed Fusion: Calibration and Validation with Infrared Camera |
Author(s) |
Shawn Hinnebusch, Alaa Olleak, Christopher Barrett, Seth Strayer, Florian Dugast, Albert To |
On-Site Speaker (Planned) |
Shawn Hinnebusch |
Abstract Scope |
Current part-scale thermal process simulation models for laser powder bed fusion (L-PBF) are calibrated using thermocouple data and do not capture the correct temperature distribution. Most layerwise simulations apply a constant heat flux for the duration of the layer or apply the melting temperature to the layer for a set time. These methods are tuned with the absorptivity and heat convection coefficients for a set geometry to match experimental data. With the help of thermocouples and an infrared (IR) camera, the simulations can be accurately calibrated for various geometries by tuning the model parameters throughout the build process. This proposed workflow uses a voxel mesh and matrix-free formulation to take full advantage of GPU-based computing allowing for rapid and accurate calibration of L-PBF process simulation models. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |