About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Numerical Simulations and Experimental Validation of Laser-Foil-Printing Additive Manufacturing |
Author(s) |
Tunay Turk, Tao Liu, Emmanuel O. Olugbade, Chia-Hung Hung, Jonghyun Park, Ming C. Leu |
On-Site Speaker (Planned) |
Tunay Turk |
Abstract Scope |
Laser-foil-printing (LFP) is a foil-fed metal additive manufacturing (AM) that offers many unique features over powder-fed systems, such as faster cooling, lower cost feedstock, and uniform heat distribution. This study investigates LFP using thermal finite element analysis (FEA). The analysis incorporates an absorptivity model to account for Gaussian beam laser energy input, surface roughness-dependent thermal contact conductance, and the temperature-dependent thermophysical properties of the feedstock. The use of adaptive mesh refinement allows the FEA model to simulate a single-pass of a line-raster scan at variable speeds by focusing on critical regions like the melt pool. The model predicts melt pool size and cooling rate. Validation against experimental data was done for LFP of 304L stainless steel using scanning electron microscopy. This study demonstrated that, by incorporating material, foil thickness, and geometry in the simulation, the FEA model could be a cost-effective tool for defect prevention in the LFP process development. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |