Engineering Commons^™

Damage Analysis Modified Trac Computer Program (Damtrac), George H. Baker Iii, Alan D. Mcnutt, G. Bradford Shea, David M. Rubenstein

School of Integrated Sciences - Faculty Scholarship

A computer program tailored for EMP damage analysis of solid-state circuitry has been developed by modifying the existing TRAC network analysis program. Modification of the TRAC diode and transistor models to include breakdown parameters and the addition of a semiconductor device parameter library have greatly simplified the analyst's task. An added feature is a subroutine that automatically calculates the amplitude and duration of transient power dissipated in electronic circuit components.

Lagoon Effluent Polishing By Soil Mantle Treatment Using Various Utah Soil Types, Roger Scott Tinkey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to investigate the effectiveness of four Utah Great Basin soil types in removing particular chemical constituents and select enteric organisms from a sewage lagoon effluent. Sewage taken from the secondary oxidation pond in Logan, Utah was applied daily to lysimeters which allowed samples to be recovered at 7.6 and 38.1 centimeter soil depths. The texture of the soils was the most important physical property affecting their removal capacity. Drainage Farm soil (clay) provided the best bacteriological and overall chemical removal with Nibley (silty clay loam) second, then Draper (sandy loam) and Parleys (silty loam) …

Examination Of A Non-Point Source Loading Function For The Mancos Shale Wildlands Of The Price River Basin, Utah, Stanley L. Ponce Ii

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

During 1974 and 1975 a diffuse source salinity study was conducted in east-central Utah. The specific objectives of this study were (a) to determine the role of overland flow on salt movement for selected land types, (b) to determine the relative magnitude of surface erosion associated with overland flow and its role in the salt release process, and (c) develop a non-point source loading function to predict salt production from diffuse sources.

The Rocky Mountain Infiltrometer technique was utilized to study the process of overland flow and its relation to salt transport. A reconnaissance survey was made during the 1974 …

Plasma Diagnosis By Laser Beam Scanning, Lee W. Casperson, T. K. Cheng

Electrical and Computer Engineering Faculty Publications and Presentations

A procedure is developed for determining the radial electron density and temperature profiles of a rotationally symmetric plasma. This high‐resolution technique involves measuring the deflection of laser beams incident transverse to the plasma. Diagnosis of a stable atmospheric pressure argon arc with CO₂ and He‐Ne laser beams yields results in good agreement with spectroscopic methods.

Gaussian Modes In High Loss Laser Resonators, Lee W. Casperson, Susan D. Lunnam

Electrical and Computer Engineering Faculty Publications and Presentations

Matrix techniques are applied to the mode analysis of laser resonators having spherical mirrors and Gaussian profiles of the mirror reflectivity. These same analytical methods provide a useful approximation to the mode and loss characteristics of conventional resonators having an abrupt discontinuity of the reflectivity. Mode selection in apertured waveguides and resonators is also discussed.

The Status Of Metric Conversion In Industrial Education Programs In Utah With Recommendations For Statewide Training Programs, Thomas J. Brames

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to obtain information from Industrial Education teachers in Utah concerning their feelings and attitudes toward conversion to the Metric System in the United States and to determine their present familiarity with that system. The study was also designed to identify potential problem areas which would tend to influence educational programs on the Metric System for Industrial Education teachers in Utah.

A select sample of four-hundred twenty-three Industrial Education teachers representing over twenty occupational areas was chosen as the population for the study. Two-hundred ninety-seven usable questionnaires (70.2 per cent) were returned and tabulated as …

Ua66/9/3 Meeting Minutes, Wku Society Of Manufacturing Engineers

Student Organizations

Society of Manufacturing Engineers Student Chapter No. 43 meeting minutes January 21 through April 25, 1975

Happenings 6 (April 1975 Newsletter), College Of Public Affairs And Community Service, University Of Nebraska At Omaha

CPACS Newsletters

The College of Public Affairs and Community Service (CPACS) newsletter that reported on the news, collaborations, events, and general happenings of the UNO College of Public Affairs and Community Service. This newsletter has had many names and variations over the years including SPACS Newsletter (1973); Newsletter of the College of Public Affairs and Community Service (1973-1974): Happenings (1974-1980s); and the current e-newsletter titled the CPACS Collective (2021-)

Study Of Cold-Formed Steel Structural Members Made Of Thick Sheets And Plates, William M. Mckinney, Victor A. S. Liu, Wei-Wen Yu

CCFSS Library (1939 - present)

This final report presents the results of a study of cold-formed steel structural members made of thick sheets and plates. It contains the following two parts:Part I - Local Buckling of Cold-Formed Steel Structural Members Having Compression Elements which Exhibit Initial Out-of-Flatness Part II - Effects of Cold Work on Mechanical Properties of Thick, Cold-Formed Steel Members and Bolted Connections Part I was originally a thesis prepared by William M. McKinney for the degree of Master of Science in Civil Engineering in May, 1974. Part II was originally a thesis prepared by Victor Ai-Shen Liu for the degree of Doctor …

Load Factors For Wind And Snow Loads For Use In Load Resistance Factor Design Criteria, M. K. Ravindra, Theodore V. Galambos

CCFSS Library (1939 - present)

This report presents the background and the derivations for the determination of the mean maximum loads and the corresponding load factors for wind and snow loading for use in Load and Resistance Factor Design Criteria for steel building structures.

Ua64/3 Readout, Wku Industrial Education & Technology

WKU Administration Documents

Newsletter includes articles:

• New Departmental Programs
• Crisp, Jeff. Vocational-Industrial & Technical Teacher Education CBTE Project
• Lyons, Jerry. Not a Dirty Word, re productivity
• Conley, Frank. Comment, re: scholarships
• Dye, Wandel. Airbrush Rendering
• Student Chapter of SME Formed
• New Equipment Inventory
• Nalbach Demonstration Highlights Semester
• Environmental Science & Technology Building
• Industrial Technology Lecture Series

Ole Miss Engineer 1975

Ole Miss Engineer

No abstract provided.

Discussion Of M.W. Witczak's A Comparison Of Layered Theory Design Approaches To Observed Asphalt Airfield Pavement Performance, Herbert F. Southgate, Robert C. Deen, James H. Havens

Kentucky Transportation Center Research Report

No abstract provided.

Inhibitors And Retarders For The Free Radical Polymerization Of Alpha-Methylstyrene, Alexander Accetta

Masters Theses

No abstract provided.

Evaluation Of Raised Pavement Markers, Jerry G. Pigman, Kenneth R. Agent, Rolands L. Rizenbergs

Kentucky Transportation Center Research Report

The purpose of this study was to evaluate the operational applicability of raised pavement markers and to determine their effectiveness with respect to brightness and durability. Seven different types of markers were evaluated. The primary application of markers in this study was as a supplement to lane lines. They were also used as a traffic control measure at lane drops, as delineation for hazardous curves, and as directional arrows.

Luminosity and durability were monitored for approximately one year. It was found that raised pavement markers can be a very effective method of roadway delineation. Markers evaluated had varying levels of …

Coding Urban Accident Locations, Donald R. Herd

Kentucky Transportation Center Research Report

This study reviews urban traffic accident location reference methods. Consideration is given to techniques used in other states and various cities. The needs for the Commonwealth of Kentucky were examined and a recommended location reference method and coding scheme are presented.

The First 50 Years: Agricultural Engineering, Henry H. Delong

Agricultural and Biosystems Engineering Publications

This is a history of the first 50 years (1925-1975) of the Department of Agricultural and Biosystems Engineering at South Dakota State University, including lists of departmental projects and faculty members.

Chapter I: Introduction
Chapter II: The Beginning of Our Department
Chapter III: Progress in the 40's
Chapter IV: The Growth Picture of the 50's
Chapter V: The Expanding 60's
Chapter VI: The Unique Project of Rammed Earth Construction
Chapter VII: Agricultural Extension Work by the Agricultural Engineers
Chapter VIII: Ag Engineers Take Part in Experiment Station

An Experimental Investigation Of A Cold Jet With Solid Centerbody Emitting From A Flat Plate Into A Subsonic Free Stream, Danny K. Livingston

Mechanical & Aerospace Engineering Theses & Dissertations

A study of the influence of a solid center body on lift loss and pitching moment has been conducted. It has been well established that a round free jet emitted from a flat plate at right angles to a cross flow causes an induced pressure distribution on the plate which adversely affects the lift and pitching stability of the flat plate.

This investigation has employed a 2.58 - cm diameter round jet with a 1.91 - cm diameter solid rounded core in order to modify the induced flow field and attempt to reduce the lift loss and pitching moment. Preliminary …

A Method For Improving The Accuracy In Phase Change Heat Transfer Data Through Increased Precision In Thermophysical Property Determinations, John Philip Drummond

Mechanical & Aerospace Engineering Theses & Dissertations

Wind tunnel model materials typically have thermophysical properties that vary with both position and temperature. A numerical study using a finite difference representation of the heat conduction equation has been performed on several of these model materials to determine their thermal response under a specified heat loading. This study has confirmed the feasibility of using an effective thermophysical property to account for the existence of variable thermal properties when a model undergoes aero­ dynamic heating. The effective property, when used in the reduction of phase-change heat transfer data, forced agreement of the actual transient behavior of a model with the …

Effect Of Rod Gap Spacing On A Suction Panel For Laminar Flow And Noise Control In Supersonic Wind Tunnels, William D. Harvey

Mechanical & Aerospace Engineering Theses & Dissertations

It has been well established that the test section flow of conventional supersonic and hypersonic wind tunnels contains significant levels of disturbances. These disturbances are mainly caused by the radiation of aerodynamic noise from the turbulent boundary layer on the nozzle walls. This noise level has been shown to have an important effect on boundary layer transition measured on models in tunnels. The purpose of this thesis is to present results of a coordinated experimental and theoretical study of a sound shield concept which aims to provide a means of noise reduction in .the test section of supersonic wind tunnels …

Analysis Of Spread Multi-Jet Vtol Aircraft In Hover, Leroy F. Albang

Mechanical & Aerospace Engineering Theses & Dissertations

An investigation of VTOL aircraft lift losses in hover has been conducted to evaluate a method for a simplified test technique. Three flat plate models were tested to determine their usefulness in predicting hover characteristics by comparing results between plate and three­ dimensional models. Attempts to correlate the out of ground effect results for the plate models with the empirical expression for calculating jet-induced loads were successful for the models which used engine simulators producing efflux characteristics similar to the three­ dimensional model engines. Data for the model using engine simulators with characteristics unlike those of the three-dimensional model simulators …

Silver Centers Induced In Borate Glasses: Esr And Optical Studies, Hadia El Zayyat

Archived Theses and Dissertations

No abstract provided.

Alcohol Assisted Hydrocarbon Fuels: A Comparison Of Exhaust Emissions, Power Output And Fuel Consumption Using Static And Dynamic Engine Test Facilities, Dwight J. Bushnell

Theses and Dissertations

America’s energy crunch— something new for a country that has been used to great affluence. America’s smog— an eye stinging, lung burning situation which the Environmental Protection Agency has "promised" to rectify. These are two outstanding problems that face the engineer and scientist of today. The end of the era of cheap gasoline has brought the beginnings of a quiet revolution to Detroit: an improvement in the efficiency, economy and emission level of the American automobile. Word has penetrated to the automotive engineers that the emissions level, fuel economy and automobile safety are the prime design considerations for the automobile …

Application Of Generalized Ellipsometry To Anisotropic Crystals, R. M.A. Azzam, N. M. Bashara

Electrical Engineering Faculty Publications

No abstract provided.

Electromagnetic Modes Of An Inhomogeneous Sphere, Lee W. Casperson

Electrical and Computer Engineering Faculty Publications and Presentations

Vector wave solutions are derived for the electromagnetic modes of a sphere having radial variations of the refractive index and gain. For some inhomogeneity models, confined-mode solutions exist. The results are applicable to the refracting atmospheres of stars and planets.

Computer Aided Structural Analysis: The Finite Element Method, Richard T. Ryner

Graduate Research Papers

The design process is a complex and tedious one. Within it, the task of design verification appears to require the lion's share of time, effort, and money involved.

The design formulation activity requires creative people, placed in an environment where they are able to formulate ideas which eventually become the manufactured products of an organization. This task takes up comparatively little of the time and effort of the design cycle. Therefore, it would appear that the greatest savings could be made in the design analysis task. Further, if these savings can be made earlier in the design cycle, in the …

Determination Of The Most Economically Feasible Method For High Volume Machining Of A Discharge Port In A Powder-Metal Compressor Cylinder, Perry W. Carter

Theses and Dissertations

The purpose of this study was to ascertain the most economically feasible method for high volume machining of a discharge hole in a power metal compressor cylinder.

Integrated Circuits, Julio Garcia

Graduate Research Papers

The technology of integrated circuits is_ almost new in Peru, writer's country-. It is being used mainly in black and white television sets and in some audio amplifier equipment. As any new technology, first, it is necessary to be very familiar with it in order to exploit it adequately and get all the benefits from it. The writer feels this lack of knowledge, and wants to take advantage of being here to learn the technology and techniques for using integrated circuits.

At-Grade Intersections Versus Grade-Separated Interchanges (An Economic Analysis Of Several Bypasses), Kenneth R. Agent

Kentucky Transportation Center Research Report

In an effort to reduce traffic in central business districts, bypasses have been built to provide through traffic a circumferential route and also to ease the burden of traffic in downtown areas. In many cases, though, bypasses have created a serious accident potential because they were built with at-grade intersections and no access control. This has led to commercial developments along the bypass and congestion at major intersections. When congestion increases at an intersection, traffic signals must be installed; this increases vehicle operating and time costs and creates a rear-end collision potential. In some cases, the bypass circumvents a relatively …

Engineering Data System For Bedrock Occurrences And Properties, D. J. Hagerty, Robert C. Deen, M. W. Palmer, C. D. Tockstein

Kentucky Transportation Center Research Report

The initial work plan included the development of a classification system based on index tests. An investigation of previous works in classification of rock on the basis of index tests showed that a variety of classification systems utilizing many different index tests had been developed. However, this survey showed that no generally applicable system had been developed and that little communication had been established between field investigators, facility designers, and those in charge of construction and maintenance of facilities. Therefore, the initial plan for work was modified to include the development of a comprehensive methodology for evaluation of rock. The …