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 14 of 14 for “"temperature resistance"”.
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Development of Bismaleimide/Cyanate Ester Based Aerospace Polymers for Possible Use in NASA's Relaunchable Vehicles Program
… while maintaining the strength over a wide temperature range characteristic of metals. Polymers such as polyimides and epoxies have been used to satisfy many needs, but strength, temperature resistance, and ease of processing are difficult to incorporate into a single polymer. Because of …
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Comprehensive investigation of using tire-derived aggregate in chip seal subjected to various traffic and environmental conditions
… conditions such as high, intermediate, and low temperature; resistance to freeze-thaw, deicing chemicals, and snowplowing action; and drainage capability of rubberized and conventional chip seal was assessed and compared in this research. For this means innovative traffic and rainfall simulation …
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Synthesis and indentation of boride and carbide coated carbon nanotube composite microstructures
… of CNTs in extreme environments where high temperature resistance and high mechanical resilience are needed, such as hypersonic vehicles.
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Rotor speed microsensor for the MIT Microengine
… the design, fabrication, and testing of a temperature-based sensor for measuring rotor speeds in the MIT MEMS micro gas turbine engine. The MIT microengine is a gas combustion engine made by micromachining and bonding six silicon wafers. The sensor is a boron-doped polysilicon resistor with …
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Nano-scale Heat Transfer in Nanostructures: Toward Understanding and Engineering Thermal Transport
… promote thermoelectricity. The study of high-temperature coating composite materials helps with the understanding of the role played by composition and the structural characterization, which is difficult to be approached by experiments. The method applied in studying the …
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Microstructure, Quasi-Static, And High-Strain Rate Dynamic Characterization Of Metakaolin And Fly Ash Based Geopolymers For Structural Applications
… system, including durability, freeze/thaw, acid resistance, and high temperature resistance [3]. Class F fly ash-based mortar geopolymers provide added fire retardation, reduces crack formation, etc., when added to a concrete mix or used as a mortar system. This thesis compares the quasi-static …
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The transport properties of superconducting-normal interfaces
… a previously developed theory for the divergent temperature dependence of the resistance just below T$_c$ This theory was extended with more realistic boundary conditions and to include the proximity effect. It was then found to adequately explain the temperature dependence of the resistance over …
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Setting and nanostructural evolution of metakaolin geopolymer
… strength comparable to portland cements, high temperature resistance, and stability under acid attack. However, before geopolymers can be widely used in practice, certain other behaviors must be understood and controlled, among which is setting, the transition from fluid to solid. Geopolymer …
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Flexible Polymer Waveguides for High-Speed Short-Reach Links
… have low propagation loss (0.03 dB/cm) and high temperature resistance (up to 350 °C). They can be bent down to 2 mm without cracks and the resultant excess bending loss can be less than 2 dB. The excess twisting loss is also shown to be very low, around 0.02 dB for 4 × 360° full twisting turns …
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Investigation of the Fire Behaviour of PEEK-based Polymers and Compounds
… outstanding performance, particularly concerning temperature resistance, chemical resistance and mechanical characteristics. Literature shows a gap in the knowledge with regards to PEEK flammability and decomposition products. The aim of this thesis is to describe the decomposition and …
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Towards sustainable machining of difficult-to-cut materials using nano-cutting fluids
… such as high strength to weight ratio, corrosion resistance, temperature resistance, and chemical stability, allowing them to be materials of choice in the aerospace, automotive, oil and gas, and bio-medical industries. Despite their desired characteristics, the wide spread applications of these …
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Metodología para caracterizar materiales cfrtp, para su aplicación en elementos estructurales amortiguadores y anti-vibratorios de automoción
… in a vulcanization process ( high pressure and temperature resistance, and good properties in the adhesion with rubber). - Meet the dynamic properties required - Are suitable for bolted joints applications Samples made of CFRTP adhesived with vulcanized rubber were manufactured under the same …
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Microstructural evolution and mechanical behavior in nickel based alloys for very high temperature reactor
… reactor development program, the Very High Temperature Reactor (VHTR) is the lead concept. Design and development steps are currently underway to construct a high-temperature reactor as the next generation nuclear plant (NGNP) at Idaho National Laboratory (INL). A major limitation of this …