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DRAG REDUCTION AND FLOW PROPERTIES OF CONCENTRATED COAL SLURRIES.Kaufman, Dov Bruno. January 1983 (has links)
No description available.
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Coal transportation and the development of the international steam coal market : an economic and policy analysisSargent, D. Alec January 1981 (has links)
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1981. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ROTCH / Bibliography: leaves 561-577. / by Daniel Alec Sargent. / Ph.D.
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Fiber-reinforced composite materials for coal transportation railcar bedZhou, Junlin 04 June 1999 (has links)
The material properties of the candidate fiber-reinforced composite materials
and different fabrication methods for fiber composites were discussed. The
improvement of the hand lay-up process for polyurethane impregnated Kevlar was
investigated. Testing samples for lab and prototype tests were fabricated by hand lay-up
process. The study showed that fiber composites fabricated by the hand lay-up
process can achieve good properties, and advanced fabrication methods could be
applied In industrial manufacturing processes to improve the fiber composite
properties.
A nonlinear static analysis was discussed. The ANSYS finite element analysis
computer program was used to build stress analysis models, simulate the loading
conditions, and perform the nonlinear static analysis. The tensile strength proof test
was designed and done by using a microcomputer controlled Instron 4505. It showed
that the different types of fiber composites can meet the strength requirements for the
application. Polyurethane impregnated Kevlar showed the best strength properties
among the different types of fiber composites, which were fabricated and tested.
The wear and abrasion properties of the different types of fiber composites
were discussed and relevant tests were introduced. An ultraviolet light exposure test
and the Oregon Department of Transportation road-cover test were conducted.
Moisture and acid resistance and cost analysis were also discussed.
Based on the results of the study, a prediction of the optimal fiber-reinforced
composite materials was made. Also, various conclusions and recommendations for
future research work were made. / Graduation date: 2000
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Land use planning in coal export communitiesThornton, Patricia Denise 12 1900 (has links)
No description available.
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