Engineering Commons^™

Design And Construction Of A Drop Generator For Use In A Vertical Wind Tunnel, Danny Ray Conner

Masters Theses

"A drop generator, based on the principle of a vibrating capillary, was designed and built for use in the UMR vertical atmosphere wind tunnel. The drop generator worked very well on a test stand where it was firmly supported, but was not consistent when tested in the wind tunnel. Vibration of the wind tunnel walls and a slight turbulence near the forward edge of the generator caused an oscillation in the position of the stream of drops. The oscillation resulted in some of the drops hitting the edge of the collector cup, where the drops would accumulate until a large …

Computer Simulation Of The Primary Recoil Spectra And Damage Cross Section Of Fe₃Al Using Endf/B Ii Data, Daniel Willard Smith

Masters Theses

"A computer program, using Evaluated Nuclear Data File (ENDF/B II) information, was used to develop energy-exchange kernels which delineate the energy transfer probabilities between neutrons and Fe₃Al lattice atoms. The kernels combine all available information on elastic and inelastic scattering contained in the ENDF/B II data.

The computer program used to generate the primary recoil spectra is SAKI, a modified version of RICE (1). SAKI is designed to calculate energy-exchange probabilities in any binary alloy as well as damage cross sections and optimum cutoff energies for use in comparing displacement effects in different reactor spectra."--Abstract, page ii.

Laboratory Studies Using Diffused Oxygen And Air For Hypolimnion Reaeration, Chin-Ming Pai

Masters Theses

"The purposes of this research were to study the oxygen transfer rates and the oxygen transfer efficiencies of different types of aerators using different sources of oxygen in different types of water bodies, and to evaluate the number of diffusers required to be installed in a selected lake for hypolimnion aeration.

The experiments were conducted using a specially designed column. Four types of aerators, including a cylindrical stone diffuser, a spherical stone diffuser, and 2 ceramic diffusers (types A and B) which differed in pore size, were utilized as the aerators. The water bodies selected for the studies were Rolla …

A Study Of The Effect Of Drilled Holes On The Concentration Of Elastic Stresses Around A Notch, Glenn Michael Kmecz

Masters Theses

"Hole drilling as a method for improving the toughness of notch weakened tensile specimens is investigated by means of a photoelastic technique. Tests were performed on 20%, 40%, 60%, and 80% notch depth specimens machined from PSM-1 photoelastic material. The basic criteria for success was no increase in the elastic stress concentration factor. The photoelastic results were verified by a finite element stress analysis of the 60% notch depth specimens. Comparison of the experimental and numerical results provide conclusive proof that no increase in the elastic stress concentration factor occurs when proper positioning of the drilled holes is accomplished"--Abstract, page …

Drag Reduction On Non-Ionic Surfactants In Aqueous Systems, Jen-Lin Chang

Masters Theses

"The use of polyoxyethylene alcohol non-ionic surfactants as drag reducing additives in aqueous systems was investigated. Significant drag reduction was obtained with suitable combinations of one percent Alfonic 1214 and salts at 30°C such that the surfactant was near or above its upper critical solubility temperature. Maximum drag reduction was observed at the cloud point. Relative viscosity values also peaked at this point. No upper critical shear stress was attained up to wall shear stresses of 2,000 dynes/cm² with one percent Alfonic 1214 solutions at their cloud points.

At a fixed temperature, the salt concentration required to reach the …

Effect Of Glass Aggregates Upon Abrasiveness Of Asphaltic Mixtures, Dwarka Prasad Gupta

Masters Theses

"The utilization of glass as an aggregate in asphaltic concrete pavements has been suggested as a means for reusing the increasing amounts of waste glass generated each year in the United States. Recent studies have shown that asphaltic mixtures containing glass aggregates can be designed to meet Marshall requirements for stability, flow and void content but the abrasiveness of mixtures containing glass aggregates had not been investigated. The objectives of this study were to develop a laboratory wear testing apparatus and compare the abrasiveness of asphaltic concrete mixtures using glass aggregates with the abrasiveness of mixtures using several different conventional …

A Study Of Right Turn On Red At Signalized Intersections, Ronald Duane Rains

Masters Theses

"Traffic engineers have discussed the controversial subject of allowing drivers to make a right-turn-on-red (R.T.O.R.) for many years. There have been many strong points given for and against allowing this movement.

Within this paper R.T.O.R. is discussed and conclusions are drawn for a research of literature and questionnaire survey.

Questionnaires were sent to ninety-three cities and all fifty states. Many valuable unwritten facts and opinions were received from the seventy city and thirty-six state traffic engineers that completed and returned the questionnaires.

It was determined that 63.8% of the states replying and 64.3% of the cities are presently utilizing R.T.O.R. …

Fundamental Studies Of Portland Cement Concrete, Phase 2 : Interim Report, Sidney Diamond, David Watson Hadley, William Lee Dolch

JTRP Technical Reports

No abstract provided.

Root Cuttings For Roadside Slope Stabilization : Interim Report, David Foster Hamilton, Robert E. Mcniel, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.

Plant Response To Nitrogen From Three Slow Release Fertilizers : Interim Report, Robert E. Mcniel, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.

Establishing Roadside Slopes By Direct Seeding With Legumes And Woody Ornamentals And By Seedlings Of Ornamental Plants : Interim Report, David Foster Hamilton, Robert E. Mcniel, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.

Evaluation Of A Mailed Planning Survey, Eugene William Waltz

JTRP Technical Reports

No abstract provided.

Selection, Establishment And Maintenance Of Woody Ornamental Plants For Highway Plantings, David Foster Hamilton, Robert E. Mcniel, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.

A Disaggregate Analysis Of Urban Travel Behavior, Edward J. Kannel

JTRP Technical Reports

No abstract provided.

Establishing Highway Slopes With Woody Plants Propagated As Root Cuttings : Technical Paper, David Foster Hamilton, Robert E. Mcniel, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.

Nitrogen Availability To Woody Plant Species As Influenced By Nitrogen Fixation : Interim Report, Robert E. Mcniel, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.

The Application Of Energy Concepts To Pavements : Informational Report, William H. Highter

JTRP Technical Reports

No abstract provided.

An Investigation Of The Use Of The Moisture-Tension Method For Determination Of Liquid And Plastic Limit Values Of Soil, Takahiko Nishio

JTRP Technical Reports

No abstract provided.

The Effect Of Plasticity And Quantity Of Fines On Stability Of Soil-Gravel Mixtures, Faiz Makdisi-Ilyas

JTRP Technical Reports

No abstract provided.

The Temporal Stability Of Trip Generation Relationships : Technical Paper, Edward J. Kannel, Kenneth W. Heathington

JTRP Technical Reports

No abstract provided.

Predicting Park 'N Ride Parking Demand : Technical Paper, Usamah Rashrash Abdus-Samad, William Louise Grecco

JTRP Technical Reports

No abstract provided.

An Investigation Into The Gradation Variability Of Aggregates Used In Bases, James T. Parson

JTRP Technical Reports

No abstract provided.

Sensitivity Analysis Of Various Cost Elements In Flexible Pavement Design, Eldon J. Yoder, Farideh Ramjerdi, William Louise Grecco

JTRP Technical Reports

No abstract provided.

Toward Accident Reduction Innovations In Driver Education, Michelle Shapiro

JTRP Technical Reports

No abstract provided.

Computerized Slope Stability Analysis: The Sliding Block : Technical Paper, Aditya Mohan, Carlos Mendez, C. W. Lovell

JTRP Technical Reports

No abstract provided.

Retarders For Concrete And Their Effects On Setting Time And Shrinkage : Interim Report, Yasuhiko Yamamoto

JTRP Technical Reports

No abstract provided.

Test 1093: Ford 7000 Diesel (Also Ford 7000 Row Crop Diesel) 8-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT

GENERAL CONDITIONS

East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers.

PREPARATION FOR PERFORMANCE RUNS

The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …

Discussion, A. G. Fabula, Gary Kent Patterson

Chemical and Biochemical Engineering Faculty Research & Creative Works

No abstract provided.

Kinetic Analysis Of The Radiation Polymerization Of Methyl Methacrylate–Kaolin Clay Composites, J. J. Beeson, Kenneth G. Mayhan

Chemical and Biochemical Engineering Faculty Research & Creative Works

In the first of a two‐part series, a kinetic study has been made on the effects of gamma rays (60Co) in air and inert gas on the polymerization of a 50:50 weight‐mixture methyl methacrylate (MMA)–kaolin clay system. The effect of dose rate (7.35–24.9 rads/sec), temperature (25° to 75°C), and total dose on the percentage conversion of monomer to polymer was studied. The rate of formation of polymer at 25°C in the composite system was found to be faster when compared to a bulk MMA system at the same dose rate. This acceleration showed that the clay had a catalytic effect …

Entrance Effects On Capillary Degradation Of Dilute Polystyrene Solutions, J. D. Culter, Kenneth G. Mayhan, Gary Kent Patterson, A. A. Sarmasti, J. (Jacques) L. Zakin

Chemical and Biochemical Engineering Faculty Research & Creative Works

No abstract provided.