Engineering Commons^™

Effect Of Gamma Radiation On Selected Organic Protective Coatings, James W. Johnson

Masters Theses

"The purpose of this investigation was to prepare pigmented and non-pigmented organic protective coatings and to irradiate them with gamma rays. The coatings received a constant radiation dose of eight million rads. Seven tests were performed on the various coatings. The data from the tests were tabulated so that a direct comparison could be made as to the effect of the radiation on the coatings. The data from the tests also enabled comparisons to be made to determine if the various pigments had imparted any specific properties that would be desirable in coatings being exposed to radiations"--Introduction, page 2.

A Preliminary Investigation Of Strains And Fracturing In Small Hydro-Stone Beams Due To Impact Loading, Niels B. Haubold

Masters Theses

"Every structure has a fundamental frequency which is sometimes referred to as its first natural frequency. If a periodic force acts on the structure whose frequency is equal to that of the natural frequency of the structure, a vibration is set up whose amplitude would approach infinity if it were not for the presence of damping. Since damping is always present, steady state conditions will finally be reached provided that the applied force is not so great that it will cause the structure to fail. The amplitude of the vibration will be a function of the applied force and the …

Frost Formation And Its Influence Upon Heat Transfer, Jack Lewis Loper

Masters Theses

"The cooling of a gas-vapor mixture or a mixture of several vapors, in the general case, results in condensation (phase-change) of one or more of the vapors when their respective dew-points are reached. This results in a mass transfer of the vapor to the cooling surface accompanied by energy transfer as the vapor gives up its latent heat of vaporization to the surface and becomes a liquid. The liquid accumulation adds a resistance to the further transfer of mass and energy unless some means is provided for its removal from the surface, such as gravity action.

In this paper we …

Analysis Of Mining Mechanization In The Fluorspar Mine, Southern Illinois, Marangin Simatupang

Masters Theses

"The purpose of this study is to analyze the underground mechanization in the fluorspar mines in Southern Illinois. The mining mechanization in this district is confronted with manifold problems which are typical of most small or medium size mines.

The ore reserve in each mine is not very large. The method of development had to be planned accordingly such as not to exceed the depreciative capacity of the deposit.

The ore bodies consist of thin bedded layers or small veins. This thickness controls the sizes of the equipment to be used.

The mining operations always lack skilled equipment operators. In …

Transients And Saturation In Synchronous Machines, Sabi J. Asseo

Masters Theses

"The synchronous machine can be regarded as the most important electrical device in today's industry and civilization. Although many improvements in the development of powerful electronic devices have been made, in recent years, the importance of the electrical power engineering field can never be overlooked in any way.

Most of electrical power engineering problems have been studied in the first quarter of the present century, and the results applied to industry for the betterment of electrical power production. As distribution and transmission systems used become extensively large, new problems such as the stability of interconnected power systems, have been introduced. …

Design Of Liquid-Liquid Extraction System, Mehdi Rahmani Fard

Masters Theses

"The unit operation of liquid-liquid extraction has developed enormously in the last 20 years and is now recognized as one of the most important techniques for the physical separation and refining of industrial liquids. For years the conventional apparatus used for liquid-liquid extraction has been towers employing countercurrent flow of the liquids and equipped with various means to increase the interfacial area.

The countercurrent column consists of a tower through which flows a continuous phase while countercurrent to this flow is a stream of droplets (the dispersed phase). Provision is made for dispersing one phase with a settling region at …

Reconstruction Of A Model L Podbielniak Fractional Distillation Apparatus, Raymond Bauer

Masters Theses

"The purpose of this thesis was to reconstruct a Model L Podbielniak Fractional Distillation Apparatus to provide equipment suitable for the study of batch multicomponent distillation. The apparatus will also serve as an analytical instrument. The equipment was instrumented to automatically control the distillation, but an operator is needed to select fractions and insure the proper functioning of the controls.

Samples of hydrocarbon mixtures of known composition were analyzed to prove the successful operation of the reconstructed apparatus"--Introduction, pages 2-3.

Effect Of Hydrated Lime And Portland Cement On The Physical Properties Of Clay Soil For Highway Base Construction, Judson Leong

Masters Theses

"The intent of this research is to determine the change in physical properties of a clay soil caused by the addition of 2, 4, 6, 8 and 10 percent of hydrated lime and portland cement. The effects of these admixtures on the physical properties of the soil were observed by comparing the results of various laboratory tests. The properties chosen for comparison were: (1) liquid limit, plastic limit and plasticity index; (2) shrinkage limit and shrinkage ratio; (3) density and optimum moisture; (4) resistance to penetration; (5) compressive strength and (6) cohesion and angle of internal friction. In order to …

The Development Of A Device To Replace The Oil Well Dynamometer, Jerry Bernard Overton

Masters Theses

"The mechanical dynamometer is recognized as being a valuable tool in measuring resultant forces acting on the polished rod of an oil well pump. The dynamometer is used extensively to determine loads, torque, and horsepower. "It is also used to determine pump action and trouble-shoot for any seemingly abnormal pumping condition."

Although it is desirous to periodically make dynamometer studies, it is also very time consuming. Because of high labor costs, it has been almost discontinued by many companies. The author became convinced that a less costly method of obtaining the same information could be developed. This method was the …

Operational Characteristics Of A Small Sewage Oxidation Lagoon, Karlheinz C. Muhlbauer

Masters Theses

"With the rapidly increasing population in the United States the adequate disposal of sewage has become one of the major technical problems which the sanitary engineer has to solve. In most areas it is no longer acceptable practice to discharge domestic sewage or industrial waste products directly into streams or lakes because of the resulting pollution of the water, which may later be used for drinking or recreational purposes. Many larger cities have, therefore, adopted some method of sewage treatment which renders such wastes safe and unobjectionable before they are discharged into a lake or stream. Most of these methods …

Surface Temperature Measurement Of Metal Undergoing Induction Heating, Ding-Yee Nee

Masters Theses

"It is the object of this thesis to investigate the possibility of using thermoelectric pyrometry for surface temperature measurement of metal undergoing induction heating. The temperature range under investigation, as stated before, is 400 °F to 1250 °F. This research may actually be treated by two sections.

The first section concerns the methods of using thermocouples for ordinary surface temperature measurements. The second section concerns the effect, if any, on thermocouple e.m.f. readings while it is measuring the surface temperature of a metal undergoing induction heating. The first section of the investigation has been well covered by literature and will …

Methods To Improve The Metallurgy Of Bolivian Tin Ores, Oscar Davila-Michel

Masters Theses

"Tin is a rare element; among the base metals it is one of the rarest. Although it was one of the first metals used by man and has been used since prehistoric time, the ore-dressing and metallurgical methods of tin are inefficient and very wasteful.

The only tin deposits of importance in the Americas are located in Bolivia, South America, and it is in Bolivia that the problems of tin metallurgy are greatest. More than 50% of the tin that is mined in Bolivia is lost in the tailing dumps of the beneficiation plants. In a country where the export …

Performance Parameters Of Low-Density Ammonium Nitrate Base Explosives; Experimental Results And J. Taylor's Method, Mohammad Azhari Warga-Dalem

Masters Theses

"Ammonium nitrate has been known to the explosive industry for a long time. Compelled by the ever increasing mining costs, in 1954 "Akremite" was introduced to the market. It is a simple carbonaceous ammonium nitrate mixture and is the cheapest explosive available to the open-pit operators.

During the following years considerable amount of research was done, resulting among others with the introduction of ammonium nitrate-hydrocarbon mixtures as an explosive. During the Second World War research was done toward the refinement of the hydrodynamic theory. Several methods of calculating the detonation velocities of the explosives were introduced: Brown (1942), Kistiakowski and …

Design Of Distillation Solvent Recovery System, Donald Empson Puyear

Masters Theses

"With the advent or the atomic bomb during the summer of 1945 the opportunity for engineering colleges to provide an integrated course of study in the field of nuclear engineering was presented. This opportunity has been greatly enhanced by a policy of the Atomic Energy commission, granting funds to selected institutions for equipment necessary for successful instruction in this field. The Missouri School of Mines and Metallurgy, realizing the opportunity presented, has established a course of study in nuclear engineering in which the departments of Ceramic, Chemical, Mechanical and Metallurgical Engineering and Physics are taking an active part.

That portion …

A Statistical Approach To The Zonation Of A Petroleum Reservoir, Leroy Allan Beghtol

Masters Theses

"The problem of dividing a reservoir into distinct permeability zones, in order to predict fluid flow and thereby the production history of the field, has long troubled the petroleum engineer. As a solution to this problem a new statistical method for zoning a reservoir was developed, using a modification of the analysis of variance technique. The application of the statistical zonation procedure to permeability data obtained from eight closely spaced wells substantiated the validity and effectiveness of the new method in determining distinct permeability zones"--Abstract, page iii.

Triaxial Testing Of Open-Type Bituminous Mixtures: Technical Paper, Joseph C. Oppenlander, William Harner Goetz

JTRP Technical Reports

No abstract provided.

A Study Of Highway Transportation In Indiana, Harold L. Michael, Arthur K. Branham, Donald O. Covault, John Edward Baerwald, Paul Day Cribbins

JTRP Technical Reports

No abstract provided.

Quality Aggregates For Indiana Highways : Technical Paper, Kenneth B. Woods, John Francis Mclaughlin, Robert Lee Schuster

JTRP Technical Reports

No abstract provided.

The Relationship Between The Unconfined Compressive Strength Of A Bituminous Mixture And The Viscosity Of The Binder : Technical Paper, Leonard E. Wood, William Harner Goetz

JTRP Technical Reports

No abstract provided.

Effect Of Rate Of Strain On The Strength Of Remolded Soil, Delon Hampton

JTRP Technical Reports

No abstract provided.

A Laboratory Investigation Of Factors Affecting The Slipperiness Of Bituminous Paving Mixtures, John Wallace Shupe

JTRP Technical Reports

No abstract provided.

The Preliminary Location Of A Proposed Highway By Photogrammetric Surveys, Dale Alden Bailey

JTRP Technical Reports

No abstract provided.

Annual Report Of The Assistant Director, 1957-1958, Harold L. Michael

JTRP Technical Reports

No abstract provided.

Polishing Characteristics Of Mineral Aggregates : Technical Paper, John Wallace Shupe, R. W. Lounsbury

JTRP Technical Reports

No abstract provided.

Experience With Core Drilling Machines, Power Auger And Electrical Resistivity On The Pennsylvania Turn Pike : Technical Paper, D. G. Shurig, Eldon J. Yoder

JTRP Technical Reports

No abstract provided.

The Mechanics Of Continuously Reinforced Concrete Pavements : Technical Paper, M. M. Miller, Martin J. Gutzwiller

JTRP Technical Reports

No abstract provided.

Methods For Water Resistance Of Bituminous Paving Mixtures : Technical Paper, William Harner Goetz

JTRP Technical Reports

No abstract provided.

Stresses And Deflections In Continuously Reinforced Concrete Pavements, M. M. Miller

JTRP Technical Reports

No abstract provided.

The Value Of Planned Access On Urban Bypasses : Technical Paper, Charles Pinnell, Harold L. Michael

JTRP Technical Reports

No abstract provided.

Test 639: Ford Model 841l (Lpg), Nebraska Tractor Test Lab

Nebraska Tractor Tests

This report and any related files are made available to the online through the Lester F. Larsen Tractor Test and Power Museum as resources allow. Established in 1998, this museum is located on the University of Nebraska-Lincoln East Campus. It is and appropriately housed within the walls of the historic 1920 Nebraska Tractor Test Laboratory, where the first tractor test was started on March 31st, 1920. Because the pioneer tests became worldwide standards, this location was designated as a Historic Landmark of Agricultural Engineering by the American Society of Agricultural Engineers in 1980, shortly after testing was moved to a …