Muhamad Ragil Setiawan, Umar Fauzi, Fourier Dzar Eljabbar Latief, Muhammad Rizqie Arbie, Pongga Dikdya Wardaya, Erlangga Septama, Suherman, Totong Kusnadi Usman
Numerical calculations of elastic properties for several clastic rocks were performed on 3-D micro-CT digital images. The finite element method developed by Garboczi, based on minimum energy, is applied to calculate the stress and strain of the medium. Different resolutions of CT-scan and sub-samples are compared to understand the influence of resolution and sample size on the elastic properties, i.e., elastic moduli and Poisson's ratio. By assigning the solid phase as quartz, the results show that the estimated Poisson's ratio, bulk modulus, shear modulus, and Young's modulus depend strongly on the porosity and less on the microstructure. The relationship is linear for Poisson's ratio. Furthermore, the bulk modulus, shear modulus, and Young's modulus exhibit an exponential relation with their porosity and slightly show the influence of the microstructure. © Published under licence by IOP Publishing Ltd
Physics of Earth and Complex Systems, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesa 10 Bandung, Bandung, Indonesia; Technology Development 1, PT Pertamina (Persero), Gedung Sopo Del Tower lt. 50, Jln. Mega Kuningan Barat III Lot 10.1-5, Kuningan, Jakarta Selatan, Indonesia; Physics Department, Faculty of Science, Institut Teknologi Sumatera, Lampung, Lampung Selatan, Indonesia