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 9 of 9 for “"thermal distortions"”.
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A Solid-State Phase Camera for Advanced Gravitational Wave Detectors
… phase camera in sensing the beat signals due to thermal distortions from point-like heat absorbers on the test masses in the Advanced LIGO detectors. The camera is capable of sensing optical path distortions greater than about two nanometers in the Advanced LIGO input mirrors, limited by the …
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Design and experimental evaluation of a dynamic thermal distortion generator for turbomachinery research
… design and experimental evaluation of a dynamic thermal distortion generator for turbomachinery research. The detailed design of a thermal distortion generator, its individual components, and its associated hardware was performed. Details of the preliminary design concepts and also the combustion …
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Wavefront modelling and sensing for advanced gravitational wave detectors
… component. Higher laser power introduces larger thermal distortions in the interferometer, which increase mode mismatch. This thesis covers topics relevant to optical modelling of coupled cavity interferometers such as the DRFPMI with a focus on mode mismatch. Novel applications in aLIGO …
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Crack Patterns in Thin Films and X-ray Optics Thermal Deformations
… which heats up the structure resulting in the thermal deformations, and consequently in distortions of the reflective surface. In addition, the excessive heating may activate interdiffusion in the multilayers coatings and result in degradation of their reflective performance and even film …
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Fuel Droplet Optical Diagnostic Techniques for Lean Premixed Prevaporized Aeroengine Combustors
… at the dome face of the combustor. Due to the thermal distortions caused by the reacting flames, the distortion cancellation capabilities of these two techniques are also evaluated. Finally, narrow linewidth shadowgraphy is employed to measure liquid fuel droplet sizes in the flame at high …
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FABRICATION AND THERMAL ANALYSIS OF POLYIMIDE-BASED X-RAY MASKS AT THE SYNCHROTRON LABORATORY FOR MICRO AND NANO DEVICES, CANADIAN LIGHT SOURCE
… are often avoided in DXRL because of large thermal distortions expected during X-ray exposure as a result of the low thermal conductivity. The power tuning capabilities at SyLMAND, however, allow the beam power to be adjusted and consequently limit thermal distortions. The heat load of the …
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A Study of the Effects of Piston Secondary Motion on Piston Ring Conformability and Coolant Cavitation in Heavy-Duty Engines
… influence on piston ring-bore conformability. Thermal distortion and out-of-roundness of the cylinder caused by head bolt stresses are routinely considered in conformability analyses for ring pack designs. However, the effect of piston impact on the bore distortion for ring-liner conformability …
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Finite Element Analysis and Genetic Algorithm Optimization Design for the Actuator Placement on a Large Adaptive Structure
… of a large number of actuators to control thermal deformations. After briefly reviewing the three most frequently used general approaches to derive a finite element formulation, the dissertation presents techniques associated with general shell finite element analysis using flat triangular …
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Aspects of mirrors and suspensions for advanced gravitational wave detectors
… of the detectors. One important noise source is thermal noise (both Brownian and thermo-elastic) - a limiting factor at midband frequencies. Reduction of mechanical loss in mirrors and their suspensions will help lessen the impact of thermal noise in future detectors. The research detailed in …