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 82 for “"RIGs"”.
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Well-Conditioned Heat Transfer Measurements on Engine Scale Gas Turbine Rigs
… quantification of turbine heat transfer on test rigs which closely represent gas-turbine engine configurations. Fundamental improvements are made to existing methods, in the definition of the ‘semi- infinite limit’ for transient measurement techniques, in Infra-red camera calibration, and in …
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Design and construction of rigs for studying surface condensation and creating anodized metal oxide surfaces
This thesis details the design and construction of a rig for studying surface condensation and a rig for creating anodized metal oxides (AMOs). The condensation rig characterizes condensation for different surfaces; this is done with the use of known heat transfer principles to calculate …
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The influence of microstructure on the creep properties of 441 ferritic stainless steel
… two lever-arm type, constant load creep rigs in response to the need for a high quality creep test facility. These rigs were to be used to satisfy the initial objective and to evaluate an industry benchmark test used for determining the creep resistance of a particular alloy, known as the …
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LIFE ON THE EDGE: The Archeologist, the Oil Rig, and the Newfoundlander
… of Newfoundland and Labrador's offshore oil rigs are moved near-to-shore. The rigs are slowly and incrementally deconstructed, now serving as monumental scrapyards and material salvage pantries for a new working landscape on Newfoundland's coast. Salvaged components shore up and transform the …
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Inventory management of steel plates at an oil rig construction company
… Fels produces make-to-order oil exploration rigs for the global market. Each rig requires close to 6000 metric tons of steel in the course of its production. Optimal management of this steel is very critical in this line of business. However, in recent years, demand for these rigs has been …
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Assessment of the Wear Effects of Alumina-Nanofluids on Heat-Exchanger Materials
… work is presented on development of novel test rigs and testing methodologies, and on the use of typical surface analysis tools for assessment of wear and erosion that may be produced by nanofluids; prediction of such effects in cooling systems is discussed.</p> <p>Two new tests rigs were …
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Effect of Water Chemistry, Pipe Material, Temperature and Flow on the Building Plumbing Microbiome and Opportunistic Pathogen Occurrence
… pipe materials. To this end, standardized pipe rigs were deployed at the treatment plants and in distal portions of the water distribution system at five water utilities across the eastern U.S. Source water and treatment practices appeared to be the overarching factors shaping the microbial …
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HIGH-SPEED ROTOR TIP CLEARANCE MEASUREMENTS IN A TRANSONIC COMPRESSOR
… the design, creation, and use of two benchtop rigs with a capacitive proximity probe blade tip clearance measurement system to develop mathematical methods to post-process capacitive probe output signals for calibration and tip clearance measurements. The mathematical methods developed in this …
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Type 1 hot corrosion furnace testing and evaluation.
… seen in operating gas turbine engines and burner rigs could be more simply reproduced. Furnace parameters were varied to determine optimum (most aggressive) values for a short term type 1 hot corrosion test. The results of these tests were ranked and compared to data available from a variety of …
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An investigation into vibration assisted machining : application to surface grinding processes
… the static and dynamic characteristics of the rigs were identified. Moreover, the exact dynamic behaviour of the rigs - including their natural frequencies - was established though real experiments. Sweep - sine and impact tests were employed in order to identify these dynamic parameters and …
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Analytical and Experimental Investigation of Torsional Vibrations in Variable Frequency Drive Controlled Induction Motor Driven Machinery
… validate the predictions, two experimental test rigs are employed. The first rig uses a hysteresis brake to measure torque harmonics in an induction motor driven system with a rigid coupling. The second rig is newly designed and fabricated to replace the hysteresis brake with a low inertia eddy …
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The dynamic cutting of metals
… chatter. A description of suitable experimental rigs and the results obtained from these rigs are given. The results show that there are large phase changes of cutting force relative to chip thickness when vibrating. A simplified criterion is given for assessing machining stability and it is …
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Site Integrity: how might experimental moving image perform the materiality of site?
This practice-based research uses motorized rigs to critically evaluate the ways in which the moving image can perform the materiality of site. The study’s phenomenological approach to filmmaking uses dual-motorized rigs to record and re-present moving images both made and displayed in situ – in …
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Designing a low-cost measurement system for volume estimation
… thesis involves construction of multi-camera rigs, but focuses on the development of data processing and surface reconstruction pipelines necessary to convert camera images into 3D surface models. We show that the system is capable of measuring volumes that, though error prone, are strongly …
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Cooling hole geometry and turbulence effects on the early suction side surface of a turbine vane
… turbulence level, Mach and Reynolds numbers. Two rigs have been designed and built for this work: LE-Sim, leading edge simulator; and FPlate, flat plate. The former is a 1:1 scale annular sector cascade of the Mitsubishi F-701 first stage nozzle guide vane. The latter is a flat plate arrangement …
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Transitional and turbulent flow of non-Newtonian slurries in pipes
… and two pumped recirculating pipe test rigs.
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Design and Adaptive Control of a Lab-based, Tire-coupled, Quarter-car Suspension Test Rig for the Accurate Re-creation of Vehicle Response
… rig, the current state-of-the-art in quarter-car rigs was first evaluated as well as indoor vehicle testing in general. Based on these findings, a list of desired functional requirements was defined for this new design to achieve. The new test rig was built and evaluated to determine how these …
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Evaluation of kickback energies in abrasive chain saws and cut-off saws: a theoretical and experimental study
… models, numerical integrations, and two test rigs were designed to study them. First the different mechanisms which could cause kickback were considered (kickback modes) and simple physics models were made to describe them. From these, it was found that a pinch based kickback was potentially …
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Life on a Ball: Multi-Week Tethered Behavior in Drosophila
… weeks, at experimentally defined moments. The rigs are compact, such that two dozen or more can fit in a small room, allowing for the study of many flies simultaneously. The rigs are also modular, and easily adapted to new kinds of experiments. I have used them to probe innate behaviors, like …
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State of the Art Roller Rig for Precise Evaluation of Wheel-Rail Contact Mechanics and Dynamics
… industries. In contrast to field-testing, roller rigs offer a controlled laboratory environment that can provide a successful path for obtaining data on the mechanics and dynamics of railway systems for a variety of operating conditions. The idea to develop a laboratory test rig started from the …
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