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Spring 2012
A promising approach to the development of an integrated system for magnetic resonance imaging-guided radiotherapy involves the rigid coupling of a medical linear accelerator to a rotating biplanar magnet assembly. Through near real-time volumetric imaging during irradiation, this hybrid system...
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Fall 2010
Because of their high strength to weight ratio, stiffened steel plates are often used in light structures where plates are placed into compression. The stability of steel plates stiffened with longitudinal tee-shaped stiffeners and subjected to uniaxial compression or combined axial compression...
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Fall 2013
There are many design methodologies and philosophies intended to provide structural integrity or increase structural robustness, thereby making structures resistant to progressive collapse. However, there is little information that reveals sources and levels of inherent robustness in structural...
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Optimal Design of Coke Drum Skirt Slots and Analysis of Alternative Skirt Support Structures for Thermal-Mechanical Cyclic Loading
DownloadFall 2017
The skirt-to-shell attachment weld on coke drums is susceptible to low-cycle fatigue failure due to severe thermal-mechanical cyclic stresses. Therefore, various skirt attachment designs have been proposed and implemented to reduce stress and thus improve reliability. The most common skirt design...
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Spring 2017
Buried steel pipelines are widely used in transportation and distribution of oil/gas products over long distance. The changing geo-environmental conditions over the line may subject the pipelines to unforeseen load combinations and prompt the failure and loss of containment of the pipelines that...
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Spring 2018
Modern effort in radiotherapy to address the challenges of tumor localization and motion has led to the development of MRI guided radiotherapy technologies. Accurate dose calculations must properly account for the effects of the MRI magnetic fields. St-Aubin et al. (2015, 2016) have investigated...
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Spring 2010
This thesis investigates stray losses in AC machines using the time-stepped finite element technique. Two aspects of this topic are involved in this thesis. The first aspect is to construct a finite element model for AC machine systems and develop an efficient numerical solution for the system...
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The development and biomechanics of theropod teeth and comparisons with other reptiles: a functional analysis
DownloadSpring 2012
Teeth are important for taxonomic studies. They are often the only remains found of certain vertebrates in the fossil record. This is because they are more resistant to weathering than most bones, they are small, and they are generally abundant. Most reptiles have homodont dentition, and the...
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Fall 2010
The jaw musculature of Champsosaurus has been enigmatic since the taxon was first described. The extant phylogenetic bracketing method is used to determine the morphology of the jaw adductor musculature. Rotational mathematics is used to calculate the muscle forces, torques, angular...
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Fall 2017
Three species of Cretaceous marine squamates are described or redescribed. The first, Pontosaurus ribaguster is described from a relatively complete specimen discovered on Hvar Island, Croatia. Preservation of identifiable nektonic teleosts within the gastric cavity (the first identifiable...