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Now showing items 11-20 of 131
The effect of vibrations on ordering in a copper-gold alloy
(1958)
Experiments were performed to determine the effects of mechanical vibrations on ordering in CuAu. The effects of 5, 10 and 15 kc vibrations were investigated over a range of ordering temperatures of 280 to 360°C. A retarding ...
A two dimensional photoelastic study of the load distribution among the roller bearings in a rock bit
(1955)
The photoelastic technique was employed to investigate the adverse affect on the load distribution among the roller bearings in a rock bit cutter as a result of the relatively large radial clearance in the bearings. A ...
Basic relation for the recovery of oil by steam application to an oil and hot water system
(1965)
A system of equations describing the general behavior of a "steam flood" or oil displacement by means of steam in a homogeneous, one-dimensional non-capillary model formation is here derived. An aspect of the steam flood ...
Forces required to roll an idealized drill bit across a Coulomb plastic material
(1968)
This thesis presents a systematic method for determining the forces on a simplified roller bit. The kinematics of an actual roller bit drilling in rock is complex; nevertheless, it is desirable to obtain an accurate ...
Characteristics of supersonic thrust nozzles for low density plasmas
(1962)
The thrust characteristics of a conical nozzle were experimentally determined using helium, partially ionized by a high energy electric arc, as the working fluid. The thrust produced in the supersonic section of the nozzle ...
Crossed-field acceleration of a supersonic plasma
(1963)
An effort was made to obtain further correlation between theoretical and experimental results for continuous Lorentz force acceleration of a partially ionized gas. Four different nozzle-accelerator combinations were evaluated ...
An experimental and analytical investigation of the effect of tray liquid on the vibration behavior of bubble towers
(1954)
Study of field observations indicates that tray liquid affects the vibration behavior of a bubble tower as would a tuned dynamic vibration absorber. In this thesis an analytical investigation and experimental model studies ...
A lumped parameter approach to longitudinal and torsional vibrations of oil well drill strings
(1962)
The effect of tool joints on the passage of plane longitudinal and torsional waves along a drill pipe was studied. An approximate solution to the governing equations of motion found, and an idealized tool joint constructed. ...
A study of microcreep in magnesium single crystals in the temperature range 77 degrees to 300 degrees K
(1963)
Single crystals of 99.97% pure magnesium were grown by the Bridgman technique. A very sensitive capacitance strain gage was employed to observe microcreep in these crystals at temperatures from 77° to 300°K. The microstrain-time ...