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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 613 for “"elevated temperatures"”.
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Elevated temperatures in waste containment facilities
… facilities. A number of factors can lead to elevated temperatures and thus present a hazard to the public health and safety. For instance, MSW landfills can produce obnoxious odors, toxic gases, and aggressive leachates. In addition, they can damage gas extraction, leachate collection, …
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Photovoltaic cell efficiency at elevated temperatures
… we tested the change in efficiency due to higher temperatures of three types of solar cells: a polymer cell, an amorphous silicon cell and a CIS cell. Using an AM1.5 G solar simulator at 973 W/m2 we took the I-V curve of each of the three cells at increasing temperatures. We used the I-V curve to …
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Dynamic characteristics of metals under elevated temperatures
… where it may be subject to dynamic loads under elevated temperatures. This thesis attempts to experimentally identify properties of the three above mentioned metals at elevated temperature [70°F--350°F] and under different strain rates [10-4--10 2 sec-1]; The thesis will investigate the …
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Electrical conductivity of oxides at elevated temperatures
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Metallurgy, 1959.
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The lubricating properties of graphite at elevated temperatures
The wear rate and the magnitude of friction of commercially available graphites in air have been shown to be dependent on the corrosion resistance of the graphite. In air the wear rate of graphite was observed to increase with increasing temperature up to 6000 C. A very rapid type of wear was found …
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Observations of creep in aluminum at elevated temperatures
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Metallurgy, 1952.
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Compressive behavior of refractory ceramics at elevated temperatures
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1989.
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Studies on vulcanization with sulfur at elevated temperatures
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1941.
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Electronic absorption spectra of minerals at elevated temperatures
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1979.
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Elasto-viscoplasticity of porous metals at elevated temperatures
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1992.
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Fracture of Hot-Pressed Silicon Nitride at Elevated Temperatures
… stress before the values decreased at high temperatures. This peak corresponds to the onset of subcritical crack growth prior to catastrophic failure. Subcritical cracking is believed to occur by the nucleation, growth and coalescence of cavities in the secondary, amorphous grain boundary …
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Fatigue and fracture behaviour of PVC at elevated temperatures
… SN and Fracture Mechanics Paris testing. The temperatures tested were 20%C and 45%C. In addition to temperature tests, a potential ageing effect was also investigated by comparing pipes which had been in service in the resort, and previously unused piping. The SN tests consisted of externally …
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Fatigue and fracture behaviour of PVC at elevated temperatures
The research studies revealed that there was a distinct difference in fatigue performance as a result of a temperature increase from 20°C to 45°C, as characterised by both SN and Paris fatigue tests. There was also, but to a lesser degree, an ageing effect. The temperature performance factor for …
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Post-failure behavior of westerly granite at elevated temperatures
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1981.
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Migration from non-ovenable food contact materials at elevated temperatures.
… from non-ovenable food contact materials at elevated temperatures, and several applications where migration has occurred have been identified. Boil in the bag applications lead to exposure times of 30 - 120 minutes for complex multilayer laminates, whilst plastic kettles are repeat exposure …
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Reactions Between Molybdenum-Disilicide and Vanadium-Oxides at Elevated Temperatures
Made available in DSpace on 2014-12-12T00:32:35Z (GMT). No. of bitstreams: 1 7511558.pdf: 6083522 bytes, checksum: c588063a0bf822a70e4bd63a27b96332 (MD5) Previous issue date: 1974
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Nanomechanical studies of metallic glasses at ambient and elevated temperatures
Bulk metallic glasses, though attractive for use in structural applications for their high strength and elastic limit, display several unacceptable features upon deformation, including quasi-brittle failure along shear bands, extremely limited tensile ductility, and propensity for fatigue under …
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