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 12 of 12 for “"high-temperature material"”.
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Observation of high iron charge states in solar energetic particle events
… Explorer (ACE). We concentrate our effort on the high QFe (≥14) found in the SEP events, and discuss the physical principles of how these elevated charge states are produced. We statistically confirmed the energy dependent charge states found in impulsive SEP events and showed impulsive SEPs …
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Modification of Fused Filament Fabrication Printer to Print High Temperature Thermoplastics to Improve Z-Strength
… omega shape around the printing nozzle to print high temperature materials and improve the tensile and flexural properties. The FFF additive manufacturing (AM) process is inherently a non-isothermal thermoplastic welding process that leads to anisotropic material properties. A non-traditional …
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Effect of Temperature on Microparticle Rebound Characteristics at Constant Impact Velocity
… Understanding particle interactions with the materials used in gas turbines, at representative engine conditions, can improve the design and development of turbomachinery operating in particle laden environments. Coefficient of Restitution (COR) is a measure of the particle/wall interactions …
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High-Temperature Performance of Carbon Fiber Reinforced Cyanate Ester Composites Filled with Nano-Ceramics
… nano-ceramics modified cyanate ester composite material is fabricated for the field of high temperature applications. The effect of using nano-ceramics as a filler element in the cyanate ester resin will be evaluated. High temperature materials play a vital role in the entire aerospace industry. …
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High temperature ultrasonic gas flow sensor based on lead free piezoelectric material
… are identified as the inability to operate at temperatures above 400 °C due to limitation of piezoelectric materials used, and a case for development of an alternative high temperature material is put forward. A novel and highly enhanced, lead free piezoelectric material, suitable for …
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Design, Modeling and Characterization of a Multiscale Heat Exchanger for High-Temperature, High-Pressure Applications
… environments. Specifically, the shift to high-temperature, high-pressure thermodynamic cycles for improved efficiency has offered a new opportunity for device-level innovations, including producing a heat exchanger that supersedes classical material and design operating limits. Previous …
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Manufacturing of advanced continuous fiber reinforced composites for high temperature applications
… in structural applications that require material to be stronger, lighter and/or more resilient to environmental effects. The current work is on the development of processes to produce continuous fiber reinforced materials from two state of the art resin systems. Two processes were …
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Integrating Structural Fire Analysis with Hybrid Fire Testing: A Framework for Enhanced Stability, Software development and Full-Scale Evaluation.
… models remain constrained by uncertainties in high-temperature material behaviour and difficulty representing realistic restraint. As a result, system-level fire response is still poorly understood. This thesis addresses these limitations through four integrated research contributions spanning …
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High Temperature SiC Embedded Chip Module (ECM) with Double-sided Metallization Structure
… analyze and demonstrate a technology for a high temperature integrated power electronics module, for high temperature (e.g those over 200oC) applications involving high density and low stress. To achieve this goal, this study has examined some existing packaging approaches, such as wire-bond …
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Response of high strength concrete columns under fire-induced biaxial bending
… through 1-, 2-, or 3-sides of fire exposure. High strength concrete (HSC) columns are especially prone to such biaxial bending due to fire induced spalling. However, there is limited data and understanding in the literature on the effect of fire-induced biaxial bending on the response of RC …
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Charakterisierung perowskitischer Hochtemperaturmembranen zur Sauerstoffbereitstellung für fossil gefeuerte Kraftwerksprozesse
… properties of mixed conducting, perovskite-type materials were investigated. Those materials are assumed to be applicable as gas separation membranes in the oxyfuel process. Here, the materials should produce the required oxygen more energy-efficient than cryogenic air separation. …
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Seismic Tomography at Volcanic Rift Zones and Transpressional Plate Boundaries Askja Caldera and Macquarie Island
… the presence of a cylindrical low-velocity and high Vp/Vs (P-wave velocity divided by S-wave velocity) zone beneath Askja caldera that is ∼3 km wide and extends to ∼8 km below sea level (bsl). Within this zone, a shallow low-velocity and high Vp/Vs anomaly is located ∼0.5 km bsl beneath the …