Engineering Commons^™

Steady State Temperature Distribution In A Rotating Disk, George Henry Morgan

Masters Theses

"The purpose of this investigation was to obtain an expression for the steady state temperature distribution of a disk of uniform thickness rotating at a constant speed in ambient air while absorbing heat through the periphery at a constant rate. Engineers encounter such problems in connection with brakes of several varieties. The general solution obtained here could be extended to similar physical problems such as grinding wheels, disk clutches, and so on.

A differential equation was obtained for the temperature in the disk by the application of Fourier's conduction law and Newton’s convection law. A solution of this equation was …

Effect Of Alkaline Earth Chlorides On Vapor-Liquid Equilibria Of Acetic Acid-Water System, James F. Carnahan

Masters Theses

"In the separation of a system of liquids by distillation the ease with which they may be separated is most clearly indicated by the relative volatility; the greater the value of the relative volatility, the greater the ease of separation.

A system that contains compounds whose boiling points are spread over a relatively small temperature range is not readily separated by distillation. The addition of a substance that reduces the vapor pressure of one of the components, while having little or no effect on the others, adds to the ease of separation and consequently would decrease the initial size and …

Methods And Time Study In Mining Operations, Cyril Jones

Masters Theses

"It was the purpose of this study to evolve and present in a logical manner a method of approach from the efficiency standpoint, to mining operation problems. This, it was thought, could be best achieved by means of a method and time study program, which could examine all the operations in whatever detail was required"--Statement of the problem, page 1.

A Study Of The Adsorption Of Radioactive Zirconium, Niobium, Cesium, And Barium On Alumina, Silica Gels And Clays, Dale Wesley Harris

Masters Theses

"The purpose of this investigation was: (1) search the literature and review various methods investigated for the safe storage of radioactive waste products, (2) study the possible methods for the recovery, of useful radioactive isotopes by selective adsorption, (3) perform laboratory tests to determine the capacity of various adsorbents for radioactive isotopes, (4) evaluate the data and correlate it with the findings reported in the literature, (5) make recommendations of the feasibility of using these adsorbents for removal or storage of the radioactive products, and (6) make recommendations for further investigations. The adsorption of radioactive zirconium, niobium, cesium and barium …

Unsteady State Heat Transfer From A Hot Body To A Liquid, Larry Clinton Atha

Masters Theses

"The problem investigated in this thesis is that of unsteady state heat transfer from a hot body to a liquid, a quenching problem. Unsteady state or transient heat transfer is heat transfer in which the temperature distribution changes with time.

If a hot body was suddenly quenched in a large mass of liquid, a film of vapor would form between the hot body and the liquid. For example, if a hot body was quenched in water a film of steam would form between the hot body and the water. It is the purpose of this thesis to determine the heat …

Stability Of Rectangular Plates By Arbitrary Deflection Method, James Arthur Jones

Masters Theses

"Many engineering structures use thin rectangular plates as members. These plates may be loaded and supported in numerous ways. The edges may be freely supported, rigidly supported, or supported by elastic members. The load may be applied normal to the plane of the plate, in which case the problem becomes essentially one of bending. If the load is applied in the plane of the plate, placing it in compression, the problem becomes one of stability.

This investigation is concerned with the stability of plates rigidly supported on all edges and having a compressive load applied to two opposite edges of …

Regulation Of River Bank Development Through Flood Plain Zoning, William James O'Neill

Masters Theses

"The triangular pattern of protection, evacuation and flood plain zoning, as the only truly effective and comprehensive approach to proper flood control, is substantiated in practically all technical publications on this subject by economic and engineering leaders. Yet in actual practice, at the present time, flood plain zoning is not being actively applied by any federal flood control agency and by only one of the forty-nine states faced with this common problem. This lack of direct application was probably best described recently by Walter B. Langbein, Water Resources Division Engineer, U. S. Geological Survey when he said, "Flood Plain Zoning, …

The Vapor Pressures Of Pbo-Sb₂O₃-Sio₂ Mixtures., John Henry Smith

Masters Theses

"The removal of antimony is one of the important steps in the production of pure lead. The process of removing antimony from impure lead bullion is called "lead softening". The most common method used is to blow air into a bath of impure molten lead. The impurities, primarily antimony, arsenic and tin, if present, are oxidized and form a slag or "dross" which floats on the surface of the lead bath. A considerable amount of lead is oxidized in this step and joins the other oxidized compounds in the dross. This dross is skimmed from the bath of molten lead …

Linear And Vortex Flow Heat Transfer Coefficients, Edward Robert Schmidt Jr.

Masters Theses

"In order to make possible better, more efficient equipment, a higher and higher rate of heat transfer has been the goal of engineers for many years. The need for heat transfer rates never thought of 25 years ago has been brought about by the advent of modern high-performance devices such as nuclear reactors and rocket motors. "A heat release of about 40,000 Btu/hr.cu.ft. is considered good practice in a modern boiler, but in a rocket or a nuclear reactor it may be 1,000,000,000 Btu/hr.cu.ft." This heat must be removed by transfer to a coolant or converted into work or the …

Application Of Statistical Methods To Evaluation Of Mineral Deposits, Francis R. Saupé

Masters Theses

"Only in recent years have statistical methods been applied to evaluation of ore reserves. An attempt is made in this study to prepare an outline to be followed throughout the exploration in order that statistical methods can be applied to valuation problems. Particular emphasis is given to the preliminary requirements to a statistical approach. Representative parameters, sampling pattern, and sample size are discussed in separate chapters"--Abstract, page iii.

The Effect Of Heating Chill Cast Eutectics, Robert Lewis Dreshfield

Masters Theses

"This investigation is the result of the author's specific interest in two phase systems. In the past, considerable work has been done investigating the alteration of eutectoid structures; however, eutectic structures have been neglected to a great extent. Tammann did some work on the subject in 1937 as did Brown and Guy in more recent times. In both of the above cases the eutectic structure was altered by cold working and subsequent heating of the alloy.

Tammann also noted that eutectics chill cast in liquid air display a vastly different structure than those cast under equilibrium conditions and that there …

Some Properties Of Chrome-Magnesite Mixtures And Calcium Aluminate Cement-Magnesite Mixtures, Edward Charles Duderstadt

Masters Theses

"The knowledge of the physical and chemical properties of refractories is of great importance in determining their usefulness and application. The thermal expansion of refractories is of particular importance in that it affects the thermal stability of the product. A high coefficient of thermal expansion leads to greater spalling and destruction of the bricks in use. It is, therefore, desirable to develop compositions having low coefficients of thermal expansion. This investigation was undertaken (1) to determine some of the properties of chromite-magnesite refractory mixtures in an attempt to determine the optimum composition of these mixtures, the specific properties including thermal …

Lattice Constants, Thermal Expansion Coefficients And Perfection Of The Phase Tio, Hsiung Wei Li

Masters Theses

"TiO is one of the intermediate phases in the titanium - oxygen system with a crystal structure of the sodium chloride type. The phase extends from about 22 to 29 weight or about 46 to 55 atomic percent oxygen. A comprehensive survey of the physical properties of the phase has been made in previous investigations (see review of literature), but only impure titanium was available at that time. Therefore, some revision of the measurements had to be made. Also, neither the thermal expansion coefficients nor the temperature at which the lattice constants were measured were reported.

For precision determination of …

A Preliminary Investigation Of Natural Gas Combustion As Applied To Thermal Recovery Of Petroleum, Roger J. Schoeppel

Masters Theses

"Present application of the subsurface combustion processes in the thermal recovery of petroleum afford favorable and opportune methods of providing greater recoveries from petroleum reservoirs. This study attempts to elucidate some of the parameters controlling the complex hydrocarbon oxidation for one such process. The experimental phase consisted of investigating the combustion behavior of eight nonexplosive and one explosive natural gas-air mixtures at low and intermediate pressures. The hydrocarbon was allowed to oxidize by self-ignition under controlled conditions within environments precluding a visible flame type reaction. Progress of the reaction was followed by measuring effluent oxygen content.

Experimental evidence indicate the …

A Comparison Of The Effect Of Pvt Data Application Methods On Predicted Depletion Drive Reservoir Performance, Frederick A. Klein

Masters Theses

"It is generally agreed that the evolution of gas from oil within a reservoir is most closely approximated by the differential liberation process, while gas liberation in the flow string, surface separator, and stock tank is most nearly represented by flash liberation. To conform with this assumed physical behavior, appropriate application of both flash and differential liberation data in the computation of reservoir performance by material balance methods is indicated.

In this work, simple depletion-drive oil and gas recoveries were calculated (1) using differential liberation data only, and (2) using differential liberation data adjusted to incorporate the results of flash …

Triaxial Testing Of Bituminous Mixtures : Technical Report, William Harner Goetz, James Hamilton Schaub

JTRP Technical Reports

No abstract provided.

Further Studies Of Deleterious Substances In Indiana Aggregates : Progress Report No. 2, Robert Lee Schuster

JTRP Technical Reports

No abstract provided.

The Determination Of Potassium In Cement With Tetraphenylboron, William Lee Dolch

JTRP Technical Reports

No abstract provided.

Laboratory Research On Pavements Continuously Reinforced With Welded Wire Fabric, Martin J. Gutzwiller, Joseph Lee Waling

JTRP Technical Reports

No abstract provided.

An Analysis Of High Accident Rates : Technical Paper, Harlan H. Blindauer, Harold L. Michael

JTRP Technical Reports

No abstract provided.

The Feasibility Of Measuring The Moisture Gradients In Concrete Pavement Slabs: Progress Report No. 2, J. Richard Bell

JTRP Technical Reports

No abstract provided.

The Effects Of Freezing And Thawing On Prestressed Concrete : Technical Paper, Fouad Elyas Musleh, Martin J. Gutzwiller

JTRP Technical Reports

No abstract provided.

A Laboratory Investigation Of The Phenomenon Of Friction As Applied To Fine-Textured Bituminous Paving Mixtures, Jack E. Stephens

JTRP Technical Reports

No abstract provided.

Annual Report Of The Assistant Director, 1958-1959, Harold L. Michael

JTRP Technical Reports

No abstract provided.

The Effects Of Freezing And Thawing On Pre-Stressed Concrete, Fouad Elyas Musleh

JTRP Technical Reports

No abstract provided.

Hydraulics Of River Flow Under Arch Bridges: A Progress Report : Technical Paper, H. J. Owen, Attila Arpad Sooky, S. T. Husain, J. W. Delleur

JTRP Technical Reports

No abstract provided.

Application Of The Hveem Stabilometer To The Testing Of Open-Graded Bituminous Mixtures, R. A. Hannan

JTRP Technical Reports

This laboratory investigation was conducted with the purposeof determining the applicability of the Hveem Stabilometer to the testing of open-graded bituminous mixtures.

The study was divided into two major sections. The first of these investigated the validity of the Stabilometer displacement measurement when applied to open-graded specimens having large surface air voids. The second portion of the study had two specific purposes: (l) to investigate the stress-strain characteristics of open-graded mixturestested in the Hveem Stabilometer and (2) to determine whether surface voids on the ends of Stabilometer test specimens influenced Hveem stability values.

To check the validity of the displacement …

The Effect Of Density On The Repeated-Load Strength Properties Of Bituminous Concrete, J. H. Dennis

JTRP Technical Reports

No abstract provided.

Studies Of Limestone Aggregates By Fluid-Flow Methods : Technical Paper, William Lee Dolch

JTRP Technical Reports

No abstract provided.

Estimation Of Highway Needs For County Primary Road Systems By Sample Survey Methods, Donald O. Covault, Harold L. Michael

JTRP Technical Reports

No abstract provided.