Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"X-ray computed tomography (XCT)"”.
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Three dimensional quantitative textural analysis of nickel sulphide ore using X-ray computed tomography and grey level co-occurrence matrices on drill core
… challenge. In this study, the use of 3D X-ray computed tomography (XCT) is proposed as an innovative solution to non-destructively image the internal structure of drill core. Thereafter, an established, discipline independent two dimensional (2D) image analysis technique known as grey level …
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Petrofabric investigation of the sulfide-rich basal zone of the Duluth Complex
… the magmatic origin of the magnetic fabric. X-ray computed tomography (XCT) reveals that, where silicate minerals are well-aligned, sulfides form interconnected, net-textured networks along grain boundaries, whereas in rocks with disordered textures, sulfides remain diffuse and disseminated. …
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XCT, SEM, and LA-ICP-MS map investigation of chondrule FGRS in CM2 Aguas Zarcas
… combining scanning electron microscopy (SEM), X-ray computed tomography (XCT), and laser-ablation inductively coupled plasma mass spectroscopy (LA-ICP-MS) analyses, enabling a novel investigation into early solar system processes, providing insights into FGR formation and trace element patterns …
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Image-Based Modeling of Porous Media Using FEM and Lagrangian Particle Tracking
… and conductivity. Here, we use high-resolution x-ray computed tomography (XCT) to image two unsaturated rock/fracture/proppant systems under a series of stress levels typical of producing reservoirs: one with shale, one with Berea sandstone. The resulting XCT images were segmented, analyzed for …
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Procedural analyses of image-based and multiscale investigations of materials
… of granular materials from microfocus x-ray computed tomography (XCT) data. These geometries are to be used as initial conditions in image-based physics simulations. A software package called Segmentflow was developed to contain the workflow functions. Segmentflow is controlled by an …
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The feasability of processing silver and copper using 400w laser powder bed fusion additive manufacturing
… mechanical performance are established using X-ray Computed Tomography (XCT). Porosity morphology, content and distribution varied significantly as energy density at the powder bed was altered through L-PBF parameter adjustment, which in turn effected density and mechanical performance. Ag …
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Effect of Surface Moisture Condition on Substrate-Repair Concrete Overlay Transition Zone
… in nature. In recent years, transmission X-ray microscopy (TXM) has been employed to non-destructively track diffusion and develop diffusion coefficients. The work presented in this thesis surrounds the efforts of incorporating TXM experiments at Virginia Tech. This work initially utilized a …