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New Marked Point Process Models For Microscopy Images, Dae Woo Kim

Open Access Dissertations

In developing new materials, the characterization of microstructures is one of the key steps. To characterize the microstructure, many microscope modalities have been devised and improved over decades. With the increase in image resolution in the spatial and time domains, the amount of image data keeps increasing in the fields such as materials science and biomedical engineering. As a result, image processing plays a critical role in this era of science and technology. In materials image analysis, image segmentation and feature detection are considered very important.

The first part of this research aims to resolve the segmentation problem caused by …

Investigation Of Bond, Microstructure And Post-Fire Behavior Of Gfrp Reinforcement For Concrete, Omid Gooranorimi

Open Access Dissertations

Glass fiber reinforced polymer (GFRP) bars are emerging as concrete reinforcements especially in applications where corrosion resistance properties are required. This dissertation focuses on bond properties, microstructure and post-fire behavior of GFRP bars. First, the bond of three GFRP bars with different surface characteristics was investigated by performing pull-out tests. A parametric bond-slip relationship was proposed for the GFRP bar with sand coated surface. The parameters were found by performing sensitivity analysis. The proposed bond-slip law was employed in an FEM model to predict the failure mode. Additionally, the model was employed in a GFRP-RC slab to replace the unrealistic …