Muhamad Ragil Setiawan, Fatkhan, Fourier Dzar Eljabbar Latief, Umar Fauzi
As intricate compositions of diverse materials, hard rock possesses complex mechanical and elastic properties influenced by various factors. In this study, a diabase core was drilled, characterized, measured, and analyzed to investigate the elastic properties of rocks. The research aims to evaluate these properties using dynamic and static methods, employing ultrasonic measurements and digital rock physics. The sample underwent mineralogical analysis through thin sections. Comparatively, micro-CT scanning was employed to explore potential layering and fractures that might impact the anisotropy of acoustic wave propagation, as observed in digital images. The digital image reveals the presence of high-density minerals, particularly Clinopyroxene, extending along the z-axis. The static and dynamic elastic moduli suggest that the sample exhibits isotropic characteristics. However, variations in anisotropy coefficient values for Vp and Vs are noted, likely stemming from high-density sheet-like minerals. While both static and dynamic methods produce elastic moduli and velocities within the typical range for diabase rock, notable differences are apparent, possibly due to disparities in the physical techniques utilized. © 2025
Physics of Earth and Complex Systems, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Indonesia; Geophysical Engineering, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Indonesia; Physics Department, Faculty of Scineces, Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia
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