Summary

This paper investigates the processing mechanism and mechanical properties of lunar highland gabbroic regolith simulants using laser directed energy deposition (DED). It reports microstructural evolution, weight loss during de-hydroxylation, and compressive strength improvements after heat treatment. The paper discusses the application of laser-induced breakdown spectroscopy (LIBS) for the analysis of lunar regolith simulants. The study focuses on the development of a LIBS system optimized for the detection of key elements in lunar soil, such as silicon, oxygen, aluminum, and iron. The system was tested using various simulants, and the results showed that LIBS can provide accurate and rapid elemental analysis, which is crucial for future lunar exploration missions. The paper also highlights the importance of calibration and the need for further research to improve the accuracy and reliability of LIBS in space environments. The paper discusses the use of Direct Energy Deposition (DED) for processing lunar regolith simulants. It includes schematic diagrams of the DED process and scan strategy, powder properties of the simulants, particle morphology, size distribution, and absorbance

Methods and applications