J. Keuntje, T. Griemsmann, J. Patzwald, R. Staehr, P. Jaeschke, E. Stoll, S. Kaierle, L. Overmeyer | 2024 | Procedia CIRP
DOI 10.1016/j.procir.2024.08.131Review state
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This paper presents a finite element simulation model for laser melting of lunar regolith, focusing on phase transitions and validation using regolith simulants. The study aims to predict parameter ranges for laser-based additive manufacturing. This paper presents a finite element simulation model to investigate laser melting of lunar regolith using an enthalpy-based model. The study uses regolith simulant LX-I50, a mixture of LX-T100 (anorthosite) and LX-M100 (basalt), to replicate lunar soil mineralogy and chemistry. Experimental melting tests with LX-I50 were conducted using a diode laser (LDF-650) at varying power and feed rates. The results show sample thickness increases with laser power and decreases with feed rate. A laser scanning microscope (VK-X3000) was used to measure solidified melting specimens. This paper presents a numerical simulation approach for laser melting of lunar regolith using an enthalpy-based model. The study focuses on simulating thermal behavior and melt pool geometry using regolith simulants such as LX-I50, LX-M100, LX-T100, and TUBS-M/TUBS-T. Key properties include melting temperature, absorption coefficient, and thermal conductivity. The model incor
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Experimental melting tests with regolith simulants
Validation | Laser-based additive manufacturing
Laser power and feed rate variation study
Parameter analysis | Laser melting process
Phase transition from solid to liquid
Thermal analysis | Material behavior under laser heating
Sample thickness variation with laser power
Thermal response | Laser melting process optimization
Laser melting simulation validation
Experimental validation | Simulation accuracy assessment
Lunar regolith processing without Earth-supplied materials
Material sourcing | In-situ resource utilization
Laser melting process optimization
Process optimization | Laser melting parameters
Finite element simulation
simulation
sample thickness
increases with laser power
sample thickness
decreases with feed rate
Melting temperature
1500 K
Absorption coefficient
1000 m-1
Thermal expansion
1100 C
Sample thickness
2 mm
Melting temperature
1300 C
Sample thickness
Increases with laser power