Microwave Sintering of a Lunar Regolith Simulant for ISRU Construction: Multiscale Characterization and Finite Element Simulation

• DOI: 10.1061/9780784484470.068
• Publication Date: 2023-01-05T11:03:31Z
• Authors: Shayan Gholami; Xiang Zhang; Young-Jae Kim; Yong-Rak Kim; Bai Cui; Hyu-Soung Shin; Jangguen Lee
• Keywords: Multiphysics; Regolith

Microwave sintering is regarded as one of the most appropriate technologies that enable in situ resource utilization (ISRU) surface construction for future lunar base development. During process microwave sintering, electromagnetic radiant energy absorbed by soil grains whereby temperature increment and bonding take place. However, due to anisotropic field thermal runaway phenomenon, a gradient could occur sintered regolith grains. This can induce local flaws (such cracks) enclosed pores inside body. To examine improve functionality this study used simulant conducted experimental materials characterization specimens finite element model simulation process. Physical mechanical properties bulk samples were evaluated assess feasibility ISRU base. In order account several coupled phenomena COMSOL multiphysics code was simulate dielectric heating cavity integrating electromagnetism heat transfer. The within body different stages. Parametric analysis also design provide less enlarged products. Results insights from are expected hybrid its potential implementation into ISRU-based construction.