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 20 of 33 for “"steel pipe"”.
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The effects of thermal cycling on residual stresses in thick- walled stainless steel pipe
… are studied in thick-walled 316L stainless steel pipe. A relatively small AT of 280°F is considered. The residual stresses are measured by an x-ray diffraction technique. The initial stress state of the pipe wall shows periodic and random variability in stress from -30 to 20 ksi. The pipe …
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Development of a Nano-Composite Coating Technology for Improvement of Carbon Steel Pipe to Erosion-Corrosion in Oil Sands Slurry
… system. To improve the resistance of carbon steel pipes to E-C in oil sands slurry, a composite coating technology has been developed by electrolytic deposition in this research. Parametric effects on the structure and properties of the coating were investigated in order to fabricate high …
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Application and Evaluation of Non-Destructive Testing Methods for Buried Pipes
… assessment methods for both cast iron water pipes and large diameter sewer and culvert systems. A state-of-the-art review of Non-destructive Testing (NDT) technologies available for cast iron water pipes and corrugated steel culverts identified the strengths and weaknesses of each technology. …
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Avaliação de concentração de tensão em dutos danificados sob pressão interna após reparo
… of plain dents due to mechanical damage in steel pipes under internal pressure before and after repair. The work is focused on the development of a numerical model, based on the finite element method, to produce stress concentration factors of plain dents before and after applying glass …
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Design and analysis of a hybrid steel/composite pipe for high-pressure applications
… research is to develop a lightweight composite pipe that meets the performance requirements of an existing high-pressure steel pipe. This development is crucial to the petroleum industry where hydraulic-fracturing services are demanding lighter weight materials while maintaining low cost and …
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A study of the cleaning and sanitizing of milk pipe lines
… to determine whether or not the stainless steel pipe line installation of the Virginia Polytechnic Institute creamery, composed of ordinary stainless steel, could be satisfactorily cleaned by circulation cleaning procedures as opposed to daily disassembly of the entire pipe line. To …
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Design and construction of a human powered vehicle seating simulator for diagnostic testing
… changing forces of the pedaling motion. First a steel pipe was added to make the system more rigid. Then a sliding copper derailleur was used to allow the chain to stay on up to 213 watts. Finally the copper derailleur was replaced with a bike's derailleur which allows the simulator to operate in …
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Efeito da soldagem com dupla camada na microestrutura e dureza da zona termicamente afetada do aço 9%Ni
This work evaluated the HAZ of the 9%Ni steel through the Higuchi Modified Technique, which defines selection criteria for welding parameters for double layer from the microstructural results of HAZ of a welding by simple deposition. The aim of the technique is to find a combination of parameters …
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Design of energy-efficient ultrasonic communication systems on steel pipes
… signals along installed or buried metallic pipes. Buried pipe corrosion monitoring and intermittent infrastructure data collection are potential application areas, for which reliable wireless links are unavailable, due to strong RF attenuation in soil, or through shielded building …
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Accumulation of Lead by Biofilms in Drinking Water Distribution Systems
… systems, even after the removal of lead pipes. This study used a simulated water distribution system containing a lead source pipe and various pipe materials with periodic flow and stagnation conditions of a typical household to create, characterize, and determine lead accumulation …
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Characterization of underwater target geometry from Autonomous Underwater Vehicle sampling of bistatic acoustic scattered fields
… successfully estimating the orientations of a steel pipe in the Massachusetts Bay 2014 experiment. The final models produced from real and simulated data sets were used for classification and parameter estimation of simulated targets in real time in the LAMSS MOOS-IvP simulation environment.
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Nondestructive detection of foundation pile embedment depths for high mast light towers
… Minnesota. The foundation systems, typically steel H-piles or concrete-filled steel pipe piles connected to a triangular concrete pile cap, risk overturning in the event of peak wind loadings if the foundation piles are not sufficiently deep to provide the designed uplift capacity. Without …
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Characterization of underwater target geometry from autonomous underwater vehicle sampling of bistatic acoustic scattered fields
… successfully estimating the orientations of a steel pipe in the Massachusetts Bay 2014 experiment. The final models produced from real and simulated data sets were used for classification and parameter estimation of simulated targets in real time in the LAMSS MOOS-IvP simulation environment.
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Implementing Impedance - Based Health Monitoring
… to a complex truss structure and a massive steel steam header. We discovered that with multiplexing (acquiring a single signal from distributed actuators) the actuators on the truss structure we could detect damage but with less location information. Damage detection on the steel pipe ended …
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Laterally Loaded Pile Cap Connections
… were constructed, each with two 40 foot-long steel pipe piles, and were tested with different connection details. Two caps included a reinforced connection detail while the other two relied on their respective embedment lengths. A hydraulic ram was used to apply a cyclic lateral force to each …
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The thermal biology of the growing broiler having access to a means of conductive heat transfer in a hot environment
… environment. All perches were constructed from steel pipe and cooling was achieved by maintaining a constant water flow rate. In a small scale field study, broilers (3-7 wks of age) were provided either water cooled floor perches or air-equilibrated floor perches in a hot ambient environment. …
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Dynamic Full-Scale Testing of a Pile Cap with Loose Silty Sand Backfill
… and 5.18 x 3.05 m in plan view, connecting 12 steel pipe piles (324mm O.D) placed in a 4 x 3 pattern with center-to-center spacing of 4.4 and 3.3 pile-diameters in the long and short dimensions, respectively. The hydraulic actuator applied a static load to the system (backfill + pile group) …
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Assessing Structural Integrity using Mechatronic Impedance Transducers with Applications in Extreme Environments
… has occurred. Several case studies, including a pipeline structure, a composite reinforced aluminum plate, a precision part (gear), a quarter-scale bridge section, and a steel pipe header, demonstrate how this technique can be used to detect damage in real-time. A method to process impedance …
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Cyclic behaviour of monopile foundations for offshore wind turbines in clay
… are founded on monopiles, large circular steel pipe piles ranging from 4.0 m – 7.5 m in diameter. Based on available borehole records, most planned wind turbines in the UK will be founded in overconsolidated clay deposits. Monopile design is done via usage of the well established p-y …
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Analysis of large deformation offshore geotechnical problems in soft clay
… (using AbaqusTM Standard) of a conductor (steel pipe pile) embedded within soft marine clay subjected to large lateral deformations caused by drift/drive-off of a drilling vessel. The proposed analyses use coupled pore pressure-displacement procedures together with the MIT-E3 soil model to …
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