4D tomography analysis of polymer foams
Diffraction contrast tomography (DCT)
Particle analysis code (Ms.Pac)
Cone penetration in crushable sands
This project was the focus of my Ph.D. dissertation. The focus of this project was the experimental study of cone penetration in deep environments. Penetration experiments were carried out on three fully characterized silica sands in a half-cylindrical calibration chamber equipped with observation windows. The observation windows were used to capture digital images of the penetration process, and the collected images were analyzed using the Digital Image Correlation (DIC) analysis technique to obtain displacement and strain fields in the soil domain around the penetrometer. To quantify the crushing of particles and the evolution of sand fabric around the penetrometer, agar- and resin-impregnated samples were collected after the penetration experiment. These samples were scanned using an X-Ray Computed Tomography (XCT) scanner, and 3D tomography data from the XCT scanner were analyzed to quantify crushing and sample fabric around the penetrometer.
Experimental Study of Cone Penetration in Sands
Cone penetration in sands visualized with DIC and XCT
Sample Preparation in Calibration Chamber
Preparation of sand samples using air-pluviation technique
Digital Image Correlation (DIC) Analysis
Images analysed using DIC to obtain displacement and strain fields
X-ray Computed Tomography Scans
Agar- and resin-impregnated samples scanned using X-ray Microscope
Ganju, E., Kilic, M., Parab, N., Prezzi, M., and Salgado, S., "Effect of particle strength and morphology on the evolution of particle size and fabric of sands loaded under uniaxial compression." Acta Geotechnica. Accepted.
Ganju, E., Galvis-Castro, A. C., Hashem, F., Prezzi, M., and Salgado, S., “Displacements, strains and shear bands in deep and shallow penetration processes.” Journal of Geotechnical and Geoenvironmental Engineering. Accepted.
Ganju, E., Han, F., Prezzi, M., Salgado, R., and Pereira, J. S., "Quantification of particle crushing around a penetrometer tip." Geoscience Frontiers 11, no. 2, (2020): 389-399.
Ganju, E., Galvis-Castro, A. C., Han, F., Prezzi, M., Salgado, R., "Experimental study of crushing in cone penetration tests in silica sands." GeoCongress (2020).
Han, F., Ganju, E., Prezzi, M. and Salgado, R., "Effects of interface roughness, particle geometry and gradation on the sand-steel interface friction angle." Journal of Geotechnical and Geoenvironmental Engineering 144, no. 12 (2018): 04018096.