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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

The effect of periodic pressure and temperature fluctuations on unsteady heat transfer in a closed system

Wendland, Daniel W. January 1968 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1968. / Typescript. Vita. Includes bibliographical references.

Sapphire fiber based high temperature extensometer /

Fang, Xiaojun. January 1994 (has links)
Report (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Includes bibliographical references (leaf 24). Also available via the Internet.

Deformation of aluminum at high temperatures and stainrates.

Wong, Winston Alexander. January 1967 (has links)
No description available.

Behaviour of high strength steel columns at elevated temperatures

Chen, Ju, January 2007 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.

A theoretical and experimental study of self-propagating high-temperature synthesis of titanium carbide

Huque, Ziaul 10 January 1991 (has links)
Self-propagating high-temperature synthesis (SHS) is a new method of producing advanced ceramic materials and offers an attractive alternative to conventional methods of materials processing. An experimental investigation was carried out to determine the SHS reaction wave propagation speed in a vertical cylindrical compact made from a mixture of titanium and graphite powders. Ignition was accomplished by radiatively heating the top surface of the cylinder by resistively heated tungsten heating coils. Syntheses were carried out in inert argon environment and under atmospheric pressure. Propagation speeds were determined by analyzing the temperature distribution with time at two locations at known axial distance. Effects of various system parameters, such as, density and diameter of the initial compact, different mixing ratios of the reactants and dilution with product, on reaction propagation speed were determined. A numerical model was also developed to predict the propagation speed. A two-dimensional formulation was adopted with both radiative and natural convective heat loss from the periphery of the cylindrical compact using constant values of properties and kinetic parameters. Two different kinetic models describing the reactions involving solids are employed to calculate the wave speed using a finite difference scheme. The calculated results were compared with the experimental data. Trends of the results with Kanury kinetic model were found to be in better agreement with the experiments. Results showed no significant effect of heat loss on the propagation speed within a practical range of compact diameter. Quenching conditions of the reaction for titanium rich and carbon rich cases and also for the case of dilution with the product were identified. Variation of propagation speed with sample initial density showed a maximum value at densities between 2.1 gm/cm³ and 2.2 gm/cm³. During the synthesis, the samples were found to expand axially. Hence the final product obtained was highly porous with densities below 50% of the density of TiC. / Graduation date: 1991

Contact mechanics of FGM coatings /

Güler, Mehmet Ali, January 2000 (has links)
Thesis (Ph. D.)--Lehigh University, 2000. / Includes vita. Includes bibliographical references (leaves 184-189).

Characterization and cooling capacity enhancement of a porous ceramic wick based coldplate

Salinas, Mauricio Adrián. January 2008 (has links)
Thesis (Ph.D.)--University of Texas at Arlington, 2008.

The high-temperature, alkaline degradation of a new cellulose model compound

Kaylor, Rosann Matthews 05 1900 (has links)
No description available.

Compositional changes occurring in aluminosilicate refractories exhibiting increased strength at elevated temperatures.

Smith, Russell Guy 08 1900 (has links)
No description available.

The effects of hydrogen, hydrogen sulfide, and ammonia on the elevated temperature deterioration of metals and alloys in carbonaceous gas environments.

Thron, Harry M. 12 1900 (has links)
No description available.

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