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A Study Of The Compressibility Of Silty Soils., Marvin L. Byington
A Study Of The Compressibility Of Silty Soils., Marvin L. Byington
Masters Theses
"This study has been conducted to determine the applicability of the Terzaghi Theory of Consolidation and to determine the compressibility of silt soils with varying clay content. A pure silt was extracted from the Lebanon Silt Loam and mixed with varying amounts of the Onyx Cave Illite-Chlorite Clay. The compressibility of these mixtures was determined and an attempt made to apply the Terzaghi Theory in the analysis. It was found that the compressibility of soils high in silt content is very low. It was also found that the Terzaghi Theory may be applied to mixtures of 15 percent or more …
Construction Of A Laboratory Type, Convertible Excitation Argon Laser, Arthur P. Reckinger
Construction Of A Laboratory Type, Convertible Excitation Argon Laser, Arthur P. Reckinger
Masters Theses
"The purpose of this thesis is to describe the construction of a general purpose, convertable [sic] excitation, laboratory type, argon laser. Quartz tubing was used in the final model while attempts to use alumina were made during earlier work. The final model has total optical power output of 230 mw at a discharge current of 29 amperes in the dc excitation mode. Provision was also made to utilize RF or pulsed excitation. The device is built so that several values of optical transmittance are available with a wide range of mirror placement"--Abstract, page ii.
Effects Of Mixing Procedure Upon Uniformity Of Fibre Reinforced Concrete, Donald E. Nortrup
Effects Of Mixing Procedure Upon Uniformity Of Fibre Reinforced Concrete, Donald E. Nortrup
Masters Theses
"This thesis describes the effects of several methods of introducing wire fibres into a concrete mix upon the uniformity of wire fibre reinforced concrete. Various mechanical and manual methods of introducing the fibres were used and comparisons of the methods were based upon variability in splitting tensile strength and the quantitative distribution of the fibres as determined by visual inspection of sawed cylinders. Test results show that the tensile strength of concrete is increased appreciably by the inclusion of steel wire fibres in the mix and the uniformity of strength is similar to that of unreinforced concrete. The methods of …
A Programmed Synthesis Procedure For Asynchronous Sequential Circuits, Robert Judson Smith
A Programmed Synthesis Procedure For Asynchronous Sequential Circuits, Robert Judson Smith
Masters Theses
"The synthesis procedure for large asynchronous normal fundamental-mode sequential circuits is time-consuming and tedious when performed manually. This paper describes a series of computer programs which, given a machine specification in flow table form, automatically produces simplified normal form implementation design equations. The user may specify that either minimum-variable state assignments, or more rapidly generated near-minimum-variable codes be found. Next-state equations are formed using the generated state assignments and converted to simplified sums of products. Sample machines having flow tables of up to eighteen rows by four columns are synthesized"--Abstract, page ii.
Minimization And Generation Of Next-State Expressions For Asynchronous Sequential Circuits, Gary Keith Maki
Minimization And Generation Of Next-State Expressions For Asynchronous Sequential Circuits, Gary Keith Maki
Masters Theses
"One step in the synthesis procedure for realizing an asynchronous sequential circuit that is operating in fundamental mode is to obtain an internal-state assignment that will realize the operations of the circuit. Often the procedures that are used in accomplishing the above task generate several satisfactory assignments. The first part of this paper presents a method that will enable one to predict which of the internal-state assignments will yield a simpler set of next-state expressions. A second topic treated in this paper is one of presenting a method to generate the next-state expressions for an asynchronous sequential circuit directly from …
Scanning Properties Of Unsymmetrically Loaded Aperture Arrays, Gary Dean Brunner
Scanning Properties Of Unsymmetrically Loaded Aperture Arrays, Gary Dean Brunner
Masters Theses
"Radiation patterns resulting from an array of waveguide-fed apertures, filled with assymmetrically [sic] cut dielectric inserts, in an infinite ground plane were investigated. The results of Blumberg and Hemmen concerning single apertures were applied to a two-aperture array, with emphasis upon obtaining an array capable of scanning in the far field through changes in the permittivity of the assymmetrically [sic] cut dielectric inserts. Scanning was shown to be possible with up to a 60⁰ scan angle with a "push-pull" method of varying permittivities, in which the permittivity of one insert is raised while the other is lowered. The aperture field …
Annealing Characteristics Of Neutron Irradiated Silicon Transistors, Joseph Robert Chott
Annealing Characteristics Of Neutron Irradiated Silicon Transistors, Joseph Robert Chott
Masters Theses
"When a transistor is subjected to neutron irradiation, a component of base current proportional to neutron fluence is induced. From the effects of annealing on the base and collector currents, the conclusion was drawn that there is an apparent difference in the annealing characteristics between the neutral and the space-charge regions of the semiconductor device. This study of the anomalous annealing indicates that the neutron-induced component of base current is a result of one, or a combination, of the following mechanisms: a quasi-tunneling recombination phenomena in the emitter-base space-charge region, or an influence of the p-n junction electric field on …
The Measurement Of Explosively Induced Stresses In Rock-Like Materials With A Capacitive Transducer, Vincent Paul Crane
The Measurement Of Explosively Induced Stresses In Rock-Like Materials With A Capacitive Transducer, Vincent Paul Crane
Masters Theses
"A capacitive transducer was developed for measuring the free surface motion in Hydrostone blocks loaded by an explosive plane wave generator approximately one foot from the specimen. The charge to specimen distance was adjusted to produce a single spall, the position of the fracture being noted on the recovered specimen. The longitudinal wave velocity in each specimen was determined by the ultrasonic pulse technique before each shot. From the above measurements the stress, strain and strain rate at the point of fracture were determined. An attempt was made to determine the actual fracture time with imbedded [sic] conductive graphite rods, …
A Plastic Stress Analysis Of Cylindrical Wafers Under Elastically Deformable Compression Plates, Robert L. Davis, J. W. Jackson
A Plastic Stress Analysis Of Cylindrical Wafers Under Elastically Deformable Compression Plates, Robert L. Davis, J. W. Jackson
Mechanical and Aerospace Engineering Faculty Research & Creative Works
This paper represents an analysis of the pressure distribution occurring in axially loaded cylindrical wafers with, and without, elastic radial constraints. The purpose of this report is to demonstrate the resulting stress patterns that occur in short compression specimens frequently used in determining material properties, and in the opposed-anvil, or Bridgman-type, high-pressure cells. The influence of radial constraints, material strain hardening, wafer diameter-to-height ratio, anvil or plate deflection, and the wafer-anvil interface friction on the resulting stress distributions have been examined. The integrated normal stress distribution across the specimen surface has been verified experimentally via numerous tests in which each …
Dynamic Response Of Plates Due To Moving Loads, Theodore F. Raske, Alois L. Schlack
Dynamic Response Of Plates Due To Moving Loads, Theodore F. Raske, Alois L. Schlack
Mechanical and Aerospace Engineering Faculty Research & Creative Works
An analysis based on linear theory is presented for determining the dynamic response and the conditions of resonance for a simply supported rectangular plate acted upon by two types of moving loads corresponding to: (1) a point force of variable magnitude oscillating about a fixed position on the plate, and (2) a point force of constant magnitude traveling in a circular orbit about a fixed position on the plate. In addition to the ordinary resonance as produced by a variable magnitude load concentrated at a fixed position on the plate, resonance of the plate may occur due to the changing …
Handlos And Baron Model: Short Contact Times, J. Patel, Robert M. Wellek
Handlos And Baron Model: Short Contact Times, J. Patel, Robert M. Wellek
Chemical and Biochemical Engineering Faculty Research & Creative Works
No abstract provided.
Hot‐Film Anemometry Measurements Of Turbulence In Pipe Flow: Organic Solvents, Gary Kent Patterson, Jacques L. Zakin
Hot‐Film Anemometry Measurements Of Turbulence In Pipe Flow: Organic Solvents, Gary Kent Patterson, Jacques L. Zakin
Chemical and Biochemical Engineering Faculty Research & Creative Works
Longitudinal turbulence intensities, autocorrelations, and energy spectra have been measured in the flow of toluene, benzene, and cyclohexane in smooth, round 1‐ and 2‐in. I.D. tubes. These measurements were made with a constant‐temperature hot‐film anemometer and covered radial positions from the center to r/a = 0.85 in the 2‐in. tube and to r/a = 0.75 in the 1‐in. tube. The turbulence intensity data were found to be similar to those obtained for air in a 10‐in. pipe by Laufer. A slight diameter effect was observed, the intensities in the 1‐in. tube being slightly lower than those in the 2‐in. tube …
The Mechanism Of The Electrooxidation Of Acetylene On Gold, James W. Johnson, J. L. Reed, William Joseph James
The Mechanism Of The Electrooxidation Of Acetylene On Gold, James W. Johnson, J. L. Reed, William Joseph James
Chemical and Biochemical Engineering Faculty Research & Creative Works
Acetylene has been oxidized anodically in aqueous solutions at 80 °C on gold electrodes. It was found that the partial oxidation to CO2 was accompanied by a polymer formation. Effects of potential, acetylene partial pressure, pH, and temperature on the rate (current) were measured. A discontinuity in the Tafel curves was noted that indicated a change in the reaction mechanism with potential. The discontinuity was also pH dependent. A mechanism involving the discharge of H2O and/or OH− has been proposed that is consistent with the experimental results. © 1967, The Electrochemical Society, Inc. All rights reserved.
The Anodic Dissolution Of Cadmium, James W. Johnson, E. Deng, S. C. Lai, William Joseph James
The Anodic Dissolution Of Cadmium, James W. Johnson, E. Deng, S. C. Lai, William Joseph James
Chemical and Biochemical Engineering Faculty Research & Creative Works
The anodic dissolution of cadmium has been studied in aqueous solutions containing Cl−, Br−, I−, Ac−, SO4=, and NO3− ions. The normal valence (+2) was found in all solutions with the exception of NO3−. The apparent valence (calculated) of cadmium ions in nitrate solutions varied from 1.2 to 2.0 and was found to be a function of NO3− concentration, current density, and temperature. An anodic dissolution mechanism has been proposed involving local corrosion and disintegration of the anode which is consistent with the experimental results. © 1967, The Electrochemical Society, Inc. All rights reserved.
The Role Of The Doctor Of Engineering Degree In Graduate Education, Wouter Bosch, Robert E. Carlile
The Role Of The Doctor Of Engineering Degree In Graduate Education, Wouter Bosch, Robert E. Carlile
Chemistry Faculty Research & Creative Works
No abstract provided.
Variation In Gold Content Of Minerals Of The Marysville Quartz Diorite Stock, Montana, Erwin J. Mantei, Arthur H. Brownlow
Variation In Gold Content Of Minerals Of The Marysville Quartz Diorite Stock, Montana, Erwin J. Mantei, Arthur H. Brownlow
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Neutron activation analysis for gold has been carried out on 135 mineral samples from throughout the Marysville stock with the following results: (1) the gold content of 44 biotite ranges from 0·002 to 0·924 ppm with an average of 0·076 ppm; (2) 37 hornblende samples gave a range of 0·003-0·823 ppm and an average of 0·100 ppm; (3) for 44 magnetite samples the range was 0·003-0·329 ppm and the average 0·037 ppm; (4) 10 quartz-feldspar samples varied from 0·006 to 0·176 ppm with an average of 0·065 ppm. High gold values mainly occur near the edge of the stock and …
Thermal Expansion Coefficients And Lattice Parameters Between 10° And 65°C In The System Gap-Gaas, Martin E. Straumanis, J. P. Krumme, M. Rubenstein
Thermal Expansion Coefficients And Lattice Parameters Between 10° And 65°C In The System Gap-Gaas, Martin E. Straumanis, J. P. Krumme, M. Rubenstein
Materials Science and Engineering Faculty Research & Creative Works
No abstract provided.
Anodic Dissolution Of Zinc In Potassium Nitrate, Martin E. Straumanis, J. L. Reed, William Joseph James
Anodic Dissolution Of Zinc In Potassium Nitrate, Martin E. Straumanis, J. L. Reed, William Joseph James
Materials Science and Engineering Faculty Research & Creative Works
The apparent valence of pure zinc dissolving anodically in 3% KNO3 was determined as a function of current density, temperature, and ultrasonic agitation. The apparent valence of zinc dissolving anodically at 24°C diminishes from 2.01 ± 0.01 at low current densities to 1.86 at about 50 ma and remains fairly constant up to about 80 ma cm−2. This valence is affected to some extent by the preparation, e.g., polishing of the electrode, but is independent of its structure (mono- or polycrystal). Ultrasonic vibrations do not influence the apparent valence at high current densities. In all cases a black film …
Programmed State Assignment Algorithms For Asynchronous Sequential Machines., Wayne L. Schoeffel
Programmed State Assignment Algorithms For Asynchronous Sequential Machines., Wayne L. Schoeffel
Masters Theses
"An important step in the synthesis procedure for realizing a normal fundamental mode asynchronous sequential circuit is the internal state assignment. Although systematic methods have been developed to construct minimum-transition-time state assignments, they become long and tedious with hand methods for machines with more than 7 or 8 internal states. To extend the application of these algorithms to larger problems, this paper presents an efficient digital computer program for generating minimum-variable state assignments. An alternate program is also presented which, though shorter, does not guarantee a minimum-variable assignment"--Abstract, page ii.
The Relation Of Heat Transfer To Mass Transfer In Vaporization Through Porous Membranes., Chung-Liang Yeh
The Relation Of Heat Transfer To Mass Transfer In Vaporization Through Porous Membranes., Chung-Liang Yeh
Masters Theses
"The object of this investigation was to study the mass and heat transport phenomena through porous, water-repellent membranes. The investigation concerned the rate of vaporization of salt water at a porous membrane surface, mass transfer of vapor through the pores of the membrane, condensation of vapor on the other surface of the membrane in contact with a coolant (fresh water), and the undesired heat transfer by conduction through the membrane. The water-repellent membrane separated the two liquid phases by surface tension forces and provided a vapor phase in its pores. Membranes made of fiberglass and Teflon had been found suitable …
The Design And Construction Of An Apparatus For The Plane Wave Analysis Of Mufflers, Stephen Philip Buckley
The Design And Construction Of An Apparatus For The Plane Wave Analysis Of Mufflers, Stephen Philip Buckley
Masters Theses
"In the following report, a method for evaluating the attenuation characteristics of a general muffler as well as the design, construction and use of the associated apparatus are described. The method combines accepted plane wave theory and experimental techniques into a relatively straightforward approach to the analysis of acoustic filters. Equations are developed to cover the frequency range between 300 and 4000 cycles per second. Deviations from these equations extend the use of the equipment to low frequencies without the need for unduly long and cumbersome apparatus. This method, which may be called the standing wave method, utilizes a standing …
Mass Transfer From A Torus Shaped Body, Kamalesh Suryakant Desai
Mass Transfer From A Torus Shaped Body, Kamalesh Suryakant Desai
Masters Theses
"A mathematical model for molecular diffusion in a torus was derived. Handlos and Baron have assumed a system of tori in their eddy diffusion model for liquid-liquid extraction from droplets. However, the effect of torus curvature was neglected in their studies. Since they assumed the torus could be represented by an infinite cylinder. In this study, the effect of torus curvature was considered on the concentration profile and the fraction of the solute extracted. The partial differential equation describing the model consists of three independent variables, and a finite difference technique was employed for the solution of the mathematical model. …
Plastic Deformation Of Thin Plates With A Spherical Indenter, Benjamin Jen-An Chang
Plastic Deformation Of Thin Plates With A Spherical Indenter, Benjamin Jen-An Chang
Masters Theses
"A method of determining the stress distribution in a thin plate deformed with a spherical indenter is presented in this report. The analysis is formulated in cylindrical coordinates and utilizes the basic principles of plasticity (von Mises yield criteria, Luwig stress-strain equation, Hencky Deformation theory, etc.). The problem is solved through the utility of a displacement function that, by virtue of its definition, automatically assures that the condition of volume constancy is satisfied. The boundary conditions are selected on the basis of having average, or integrated, effects corresponding to the physical constraints of the problem. Numerical integration is introduced to …
The Design Of A Drum Memory System, Frederick W. Lynch
The Design Of A Drum Memory System, Frederick W. Lynch
Masters Theses
"Three methods for obtaining an auxiliary memory for an SCC-650 (Scientific Control Corporation) digital computer are presented. A logic design is then developed on the basis of using the drum and write circuits from an available IBM-650 digital computer and constructing the remaining logic functions. The results of the logic design are the transfer equations necessary to implement the memory system"--Abstract, page ii.
Relationship Of Feldspar Properties To Surface And Volume Defects In Porcelains, Macy Wiiliam Vance
Relationship Of Feldspar Properties To Surface And Volume Defects In Porcelains, Macy Wiiliam Vance
Masters Theses
"Four levels of particle size distribution and four compositions of feldspar ranging from high-potash to high-soda content were evaluated in their effect on body and surface defects and selected engineering properties of an electrical porcelain. It was found that surface blistering defects occurred at a high incidence in porcelain specimens slightly overfired at 1225⁰C in a body composition containing 33% albite (soda), 67% high-potash feldspar blend and a relatively coarse, 140 mesh grind, of the feldspar. The occurrence of surface and volume blisters was correlated with the formation of a microscopic bleb structure in the porcelain matrix. It was also …
A Shunt-Feed Antenna System On A Small Supersonic Aircraft, Larry Joseph Nanney
A Shunt-Feed Antenna System On A Small Supersonic Aircraft, Larry Joseph Nanney
Masters Theses
"A technique was developed which successfully predicted the reactance of a shunt cavity exciting the air frame of a small supersonic aircraft as an antenna. This was possible by the use of the wire above a ground place approximation which closely defined the characteristic impedance of the shunt fed cavity. A correlation was made between the maximum values of parallel resistance of the shunt fed cavity and the length of the air frame or portions of the air frame, which at this point were found to be a quarter wavelength in length. Measurements of the impedance of the shunt-feed system …
The Influence Of A Fixed Failure Plane On The Direct Shear Test, Kenneth Hodges Bell
The Influence Of A Fixed Failure Plane On The Direct Shear Test, Kenneth Hodges Bell
Masters Theses
"The analysis of the direct or box shear test for determining the shear strength of a soil makes use of the assumption that the failure plane coincides with the plane of separation between the two halves of the box. Hvorsley, Roscoe, Hansen and others have theorized and experimentally shown that this is not always the case. The stress distributions on the failure plane, however it may be oriented, are not as uniform as generally assumed. This investigation was carried out to compare direct shear tests run on granular, air dry material where the failure was allowed to take place naturally …
Digital Filter Design And Evaluation, David Alvarado MaguiñA
Digital Filter Design And Evaluation, David Alvarado MaguiñA
Masters Theses
"This thesis is concerned with the application of two digital filter design techniques to the Pade approximate continuous filters. The (m, n) Pade approximant has a numerator polynomial of degree n in s and a denominator of degree n in s. The (n-1, n) approximates are desirable for linear phase low pass filters, pulse delay circuits without initial condition errors, and pulse forming networks. A collection of plots is shown to demonstrate the quality of the approximations in the frequency domain, as far as amplitude and phase are concerned. These low pass approximants are normalized to a cut-off frequency of …
The Effect Of Concentration On The Viscosity Of Dilute And Moderately Concentrated Polymer Solutions, Hwa Luh
The Effect Of Concentration On The Viscosity Of Dilute And Moderately Concentrated Polymer Solutions, Hwa Luh
Masters Theses
"The effect of concentration on the viscosity of dilute and moderately concentrated polymer solutions was studied for eight narrow molecular weight polystyrene samples (900
An Investigation Of The Effects Of An Impact On Some Of The Mechanical Properties Of Aluminum Alloy 2014-T6, Rajnikant K. Shah
An Investigation Of The Effects Of An Impact On Some Of The Mechanical Properties Of Aluminum Alloy 2014-T6, Rajnikant K. Shah
Masters Theses
"Static and impact tests were conducted on an Aluminum alloy 2014-T6 specimen. The purpose of this research was to determine the effects of an impact load on some of the mechanical properties of aluminum. The cross section of the specimen measured 4.438 in. by 3.850 in. and it was 12 in. long. It was equipped with a total of four electric resistance gages connected in two pairs. One pair measured longitudinal strain while the other measured transverse strain. Both gages in each pair were mounted on the opposite sides to cancel the bending effect. In the static tests, load was …