The failure mechanism in porous rocks is of interest to geomechanics, defense, and planetary science applications. In this poster, we discuss ongoing work investigating the influence of water saturation on the mechanical properties and failure mechanics of sandstone. Previous studies have shown that the presence of water content has a significant effect on the evolution of failure in sandstone, decreasing the triaxial compressive strength and varying the impact crater morphology, but the underlying mechanisms affecting the evolution of deformation remain unclear. We are examining Bentheimer (porosity 24.5%) and Nugget (porosity 11%) sandstones under triaxial compression and projectile impact through a comprehensive approach involving microstructure characterization, in-situ imaging, and post-mortem analyses of the propagation of deformation. Overall, the work aims to describe the relationship between porosity, degree of water saturation, and mechanical response of sandstone to help develop a mechanism-based constitutive model.
2025-04-09 09:00:00
