Engineering Commons^™

A Design Of A High-Voltage Ionization Test Chamber., Jorge Anibal Chiriboga

Masters Theses

"The purpose of this thesis was the design and construction of a test ionization chamber which can be used in the teaching and research of several phenomena involving electrical breakdown of gaseous insulation materials.

Principal electrical discharge laws and effects, as well as their performance, are discussed as bases upon which the chamber was designed. The chamber presents the necessary characteristics for being used as a "multi-purpose" test chamber; in other words, it has the conditions for being used in the study of many electrical discharge phenomena"-- Abstract, p. ii

A Method For Verifying The Kalman Conjecture., Charles Edward Connelly

Masters Theses

"The Kalman and Aizerman conjectures are of value because, if true, they allow the replacement of a nonlinear stability problem by an equivalent linear stability problem. However, the conjectures are not true in general. This thesis presents a method for verifying the Kalman conjecture. A theorem is also presented which extends the usefulness of the method and allows several very general results to be obtained. The method is based on an off-axis circle criterion of Cho and Narendra and a consideration of the curvature of the Nyquist locus of the transfer f unction. A table is included which summarizes the …

A Master Data Bank In Power Systems., Nittaya Hokierti

Masters Theses

"A Master Data Bank (MDB) is used to prepare the data sets of large power system networks for later study. The MDB program has been developed to be compatible with data and formats used in load flow and short circuit studies. The MDB can store up to six sets of base case data. Magnetic disk storage is used as the storage medium to obtain adequate data storage and faster access to the data. The size of storage can be expanded by modification of statements in the MDB source program and job control statements. The data sets in the MDB can …

Highway Bridge Vibration Studies : Interim Report, Trakool Aramraks

JTRP Technical Reports

No abstract provided.

Computer Analysis Of General Slope Stability Problems, Ronald A. Siegel

JTRP Technical Reports

No abstract provided.

Stabl User Manual: A Description Of The Use Of Stabl's Programmed Solution For The General Slope Stability Problem, Ronald A. Siegel

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 93 : Interim Report, Ahmed Atef Gadallah, George K. Stafford, C. B. Reiling

JTRP Technical Reports

No abstract provided.

Wrong-Way Movements On Divided Highways : Technical Paper, Peter N. Scifres, Roy C. Loutzenheiser

JTRP Technical Reports

No abstract provided.

The Influence Of Retarding Admixtures On Volume Changes Of Concrete, Charles F. Scholer

JTRP Technical Reports

No abstract provided.

Improving Embankment Design And Performance: Prediction Of As-Compacted Field Strength By Laboratory Simulation : Interim Report, John L. Peterson

JTRP Technical Reports

No abstract provided.

Evaluation Of Continuously Reinforced Concrete Pavements In Indiana, Asif Faiz

JTRP Technical Reports

No abstract provided.

Comparative Travel Patterns From Four Work Trip Data Sources, Wing-Kwong Law

JTRP Technical Reports

No abstract provided.

Governmental Reorganization And Metropolitics: Determinants Central To A Normative Theory Of Metropolitan Planning, Woodrow L. Moore

JTRP Technical Reports

No abstract provided.

Study Of Collector-Distributor Roads, Ronald S. Hansell

JTRP Technical Reports

No abstract provided.

Limiting Strain As A Failure Criterion For Bituminous Mixtures, Raymond Doran Pavlovich

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 94 : Progress Report, Ahmed Atef Gadallah, George K. Stafford

JTRP Technical Reports

No abstract provided.

History Of The Interstate System In Indiana: Volume 4 - Chapters Vii And Viii: Cost, Funding And General Benefits, David Alan Ripple

JTRP Technical Reports

No abstract provided.

Computation Of Potential And Potential Gradient Around Bundled Conductors, Mamdouh Hossny Ibrahim

Archived Theses and Dissertations

No abstract provided.

Plasma And Red Blood Cells' Amino Acids Patterns In Egyptian Children With Protein Calorie Malnutrition, Mary Mitry Mikhail

Archived Theses and Dissertations

No abstract provided.

Crystallization Of A Tetrasilicic Fluormica Glass, W. H. Daniels, Robert E. Moore

Materials Science and Engineering Faculty Research & Creative Works

The crystallization of a tetrasilicic synthetic mica glass of nominal composition K2Mg5Si8O20F4 was investigated at selected temperatures from 560° to 1150°C using DTA, density measurements, electron microscopy, and X‐ray diffraction techniques. Crystallization is shown to occur in 2 stages. (1) Initial structural ordering occurs at ∼600°C, as indicated by a strongly exothermic reaction, an increase in density, and the appearance of X‐ray diffraction lines. (This transformation temperature is related to fluorine content.) (2) The crystal morphology of the glass‐ceramic changes at 900° to 1150°C. A mechanism is proposed for the transformation from amorphous to crystalline structure in this synthetic mica …

Determination Of Oxygen Chemical Diffusion Coefficients In Single Crystal Srtio By Capacitance Manometry, D. B. Schwarz, Harlan U. Anderson

Materials Science and Engineering Faculty Research & Creative Works

The oxidation kinetics of a single crystal of SrTiOs were measured with a tensivolumetric system over the temperature range 700 -975 at 0.03 atm oxygen pressure. The oxidation was found to be oxygen diffusion limited with an activation energy of 14.9 - 1.3 kcal/mole. Combining the kinetic data with relative defect concentration data yielded an activation energy for oxygen self-diffusion of 57 - 16 kcal/mole. The enthalpy of formation of doubly ionized oxygen vacancies was calculated to be 126 - 13 kcal/mol. © 1975, The Electrochemical Society, Inc. All rights reserved.

Mechanism Of Uai3 To Uai4 Transformation, Ling Ping Lee, Hollis P. Leighly

Materials Science and Engineering Faculty Research & Creative Works

The compound, UA14, which forms during the peritectic reaction (Liquid + UA13 → UAI4), has a long needlelike shape and reveals the characteristic morphology of a fishtail when cut along the long axis. When cut perpendicular to the long axis, it shows an internal core of another phase, which has been identified as a primary aluminum solid solution. Because of the interesting relationship between the crystallographic structures of UA13 and UA14, the peculiar UA14 morphology can be explained on the basis of a proposed mechanism. The mechanism of UA13 to UA14 transformation has been identified as shear and diffusion controlled …

Moiré Simulation Of Field-Ion Micrographs, P. D. Ownby, Robert M. Doerr

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

Insoluble Condensation Nuclei: The Effect Of Contact Angle, Surface Roughness And Adsorption., P. C. Mahata, Darryl J. Alofs

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Condensation of Water Vapor on Various Surfaces Was Studied Experimentally. for Surfaces with an Air-Water Contact Angle Theta Less Than 20 Degree, the Experimentally Determined Values of Critical Supersaturation S//c Agreed with Those Given by the Volmer Theory. at Higher Theta, the Experimental Values of S//c Were Below the Volmer Theory Values. When the Applied Supersaturation Was Less Than S//c, Condensation Was Avoided for Periods as Long as 20 H. It Was Determined Both by Experiment and Theoretical Analysis that the Effect of Surface Roughness is to Decrease S//c Only Slightly. These Results Suggest that Most Insoluble Airborne Particles Are …

Magnetoelastic Rayleigh Wave Convolver, William P. Robbins, Mark S. Lundstrom

Department of Electrical and Computer Engineering Faculty Publications

An epoxy-bonded LiNb03-YIG-LiNb03 composite structure has been constructed and operated as a magnetoelastic Rayleigh wave convolver with 50-MHz input signals. The acoustic signals were propagated on a (110) YIG surface and the convolution characteristics were studied as a function of the magnitude and direction of the applied magnetic field. Nonuniform demagnetizing fields limited convolution pulses to less than 1.5 /-Lsec duration. Relatively efficient operation was observed corresponding to an internal efficiency F int of -53 dBm

Pore Size Distribution Of Compacted Soils After Critical Region Drying, Rakhishwar Nath Bhasin

JTRP Technical Reports

No abstract provided.

Stabilization Of Soils For Erosion Control On Construction Sites : Interim Report, George Macha

JTRP Technical Reports

No abstract provided.

Evaluation Of The 55 Mph Speed Limit, Tim Mitchell Borg

JTRP Technical Reports

No abstract provided.

Shale Classification Tests And Systems: A Comparative Study : Interim Report Phase 1, David Robert Chapman

JTRP Technical Reports

No abstract provided.

An Evaluation Of Several Mulch Materials On Landscape Plant Growth, Weed Control, Soil Temperature And Soil Moisture : Interim Report, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.