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The Development And Analysis Of A System To Measure Transient Angular Velocity, David Lawrence Persson Jan 1970

The Development And Analysis Of A System To Measure Transient Angular Velocity, David Lawrence Persson

Masters Theses

"A measuring system was built to provide a D. C. voltage which was proportional to the angular speed of a particular rotating shaft under question. The measuring system developed has a time constant of approximately .00365 seconds. The final measuring system was developed after trying various other means which proved unsatisfactory. The final device developed would be quite satisfactory in a wide variety of applications"--Abstract, page ii.

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Dynamic Analysis Of Multistory Frames Considering Both Distributed And Lumped Mass, Mark E. Botkin Jan 1970

Dynamic Analysis Of Multistory Frames Considering Both Distributed And Lumped Mass, Mark E. Botkin

Masters Theses

"Two types of dynamic analysis of multistory structures are presented in this thesis . First presented is the dynamic stiffness matrix method in which the masses are distributed along the constituent members. This method is composed of statics, stiffness and loading matrices. The statics matrices are established from the structural configurations, the stiffness coefficients are formulated from the elastic properties of the members, and the loading matrices are functions of the time dependent forces or time dependent foundation movements. The applied forces may be uniform, concentrated, triangular or joint forces. Computer programs are given to carry out the laborious calculations …

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Anodic Dissolution Of Zinc In Potassium Bromide-Potassium Bromate Solutions, Ying-Cheh Chuang Jan 1970

Anodic Dissolution Of Zinc In Potassium Bromide-Potassium Bromate Solutions, Ying-Cheh Chuang

Masters Theses

"The purpose of this investigation was to study the anodic dissolution of zinc at a temperature of 25°C in Br⁻-BrO₃; solutions. In Br⁻ solutions, it was found that the apparent valences of zinc ions going into solution were approximately the normal value of two. Smaller values were obtained in BrO⁻₃ solutions, with the most pronounced changes occurring in the higher concentrations of BrO⁻₃. An empirical equation was derived relating the apparent valence (zi) to the current density (amp·cm⁻²) and BrO⁻₃ concentration (gmol/liter): 2- zi = 3.11 X i⁰̇̇¹³(CBrO⁻₃)⁰̇⁵⁷ The mechanism for the dissolution of zinc …

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A Computer Simulation Of The Internal Ballistics Of Recoilless-Rifle Rocket Launchers, John Edd Mosier Jan 1970

A Computer Simulation Of The Internal Ballistics Of Recoilless-Rifle Rocket Launchers, John Edd Mosier

Masters Theses

"A computer program has been developed to simulate the basic mechanics and gas dynamics associated with launching a solid propellant rocket from a recoilless rifle. This program, entitled "KICKIT," may be used to predict the performance and evaluate many of the pertinent design parameters of both conventional recoilless rifles and a recoilless rocket launcher system. This program is a valuable analytical tool which enables the designer either to optimize the system design or predict the behavior of the system under off-design conditions"--Abstract, Page ii.

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Digital Simulation Of A Costas Loop Demodulator In Gaussian Noise And Cw Interference, Ajay Mugatlal Mehta Jan 1970

Digital Simulation Of A Costas Loop Demodulator In Gaussian Noise And Cw Interference, Ajay Mugatlal Mehta

Masters Theses

"A digital computer model of a Costas loop has been employed to study the effects of Gaussian noise and continuous-wave interference on the detection of biphase modulated signals. The dependence of bit-error probability, mean-square error between input and output, phase-error variance and threshold on signal-to-Gaussian-noise power ratio, interference-to-Gaussian-noise power ratio and frequency offset of the interference have been investigated and compared with previously obtained experimental results. The model has been verified for its accuracy in the case of no noise and when Gaussian noise is present at its input"--Abstract, Page ii.

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Study Of Neutron Reflection From A Curved Surface Using The Monte Carlo Method, Marion Jay Rackley Jan 1970

Study Of Neutron Reflection From A Curved Surface Using The Monte Carlo Method, Marion Jay Rackley

Masters Theses

"The reflection patterns for neutrons impinging on both an infinite parabola and an infinite slab were studied using the Monte Carlo method. In the first case neutrons were sent into an infinite parabola (z =x²/2) moving on the XZ plane parallel to the z axis at 5 points, namely: y = 1.5, x = -1.5; y = 1.5, x = -.75; y = 1. 5, x = 0. 0; y = 15, x =.75; y = 1.5, x = 1.5. The results were that there appeared to be a "focusing" of the scattered neutrons. In the second case, neutrons were …

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The Ultraviolet Absorption Spectra Of Solutions Of 2, 4, 6-Trimethoxybenzoic Acid In Sulfuric Acid, Kathy Show-Shing Ho Jan 1970

The Ultraviolet Absorption Spectra Of Solutions Of 2, 4, 6-Trimethoxybenzoic Acid In Sulfuric Acid, Kathy Show-Shing Ho

Masters Theses

"Studies of the ultraviolet and proton magnetic resonance spectra of solutions of 2,4,6-tribromo-, trichloro-, trimethyl- and trinitro-benzoic acids dissolved in concentrated sulfuric acid by Dr. D. W. Beistel and his coworkers lead to the synthesis of the corresponding benzoate esters. In the present work the nature of ionic species formed in mixtures of sulfuric acid and 2,4,6-trimethoxybenzoic acid was examined, The spectral data suggest the presence of species similar to those assigned for the previous trisubstituted analogs, together with a species capable of fluorescence in the 2400 Å region. The reason of this unprecedented fluorescence has not been established"--Abstract, Page …

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The Lund Ash-Flow Tuff, John Evans Kreider Jan 1970

The Lund Ash-Flow Tuff, John Evans Kreider

Masters Theses

"The Lund Ash-flow Tuff is the uppermost member of the Needles Range Formation, located in southwestern Utah and eastern Nevada. This member can be correlated over an area of several thousand square miles. A detailed study of petrographic and physical features of the Lund show vertical and lateral variations in mineral content and welding intensity. Vertical differences are related to changes in the magma chamber during the Lund eruption interval. Several different ash-flows make up the Lund member. All mineral concentrations vary laterally, with concentration decreasing away from the center of the Lund field. Vertical and lateral variations in physical …

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Fault Detection On Sequential Machines, Chung-Tao David Wang Jan 1970

Fault Detection On Sequential Machines, Chung-Tao David Wang

Masters Theses

"This paper presents an algorithm for deriving an optimum test sequence for detecting faults in a synchronous machine. In this study, the flow table is used as a tool to generate the fault detection tests. The fault stuck-at-1 (or stuck-at-0 ) is said to be present when a permanent signal valued 1 (or 0) appears on a component of the machine. Only single faults are treated . The result of the procedure is one or more test sequences guaranteed to detect a set of faults (Fp). First, sequential machines with feedback lines as memory elements are considered . …

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The Failure Criteria And Deformational Moduli Of Granular Rock, Kyung Chul Ko Jan 1970

The Failure Criteria And Deformational Moduli Of Granular Rock, Kyung Chul Ko

Masters Theses

"Analytical solutions of stress for composite material are obtained by means of mathematical theory of elasticity, assuming spherical inclusions and uniform displacements of boundaries of representative elements. These solutions show that the failure criteria of composite materials are complicated functions of the elastic moduli of matrix, inclusion and composite, and the volume ratio of matrix and inclusion. Combining this theory with Griffith's theory gives a new criteria for brittle failure of granular rook. This theory appears to provide a nearly perfect model for granular rooks, inasmuch as: a) most assumptions used in other criteria are eliminated, b) most phenomena in …

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A Heuristic Algorithm For Determining A Constructive Suboptimal Solution To The Combinatorial Problem Of Facility Allocation, Harry Kerry Edwards Jan 1970

A Heuristic Algorithm For Determining A Constructive Suboptimal Solution To The Combinatorial Problem Of Facility Allocation, Harry Kerry Edwards

Doctoral Dissertations

"The major problem in plant layout is to determine the most economical relative location of facilities. There are two distinct types of suboptimal solutions to this combinatorial problem: construction and improvement. The writer has developed Modular Allocation Technique (MAT) which is the first useful construction suboptimal technique. The MAT general algorithm, a theorem relating the MAT solution to the optimal solution and an example problem are given. A computer program has been written that will apply MAT to the allocation problem for a maximum of 40 facilities. Results are given to demonstrate how MAT solutions may be used as initial …

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A Study Of Far Infrared Grid Filters, Harold Victor Romero Jan 1970

A Study Of Far Infrared Grid Filters, Harold Victor Romero

Doctoral Dissertations

"The diffraction theory for the transmission of electromagnetic fields through a grid in a dielectric is derived and experimentally checked in the visible wavelength region. In the far infrared, an approximate mathematical representation is found to describe the grids in dielectrics. The empirical equations in the far infrared are combined with the electrical circuit-transmission line analog for inductive grids. Detailed structure of the transmittance versus wave number curves are presented. Then the theory of multielement grid filters is derived and compared with experiment. The properties of the filters can be predicted from a knowledge of the characteristics of the individual …

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A Model For Predicting The Energizing Transients Of Station Capacitor Banks, Dennis Oliver Wiitanen Jan 1970

A Model For Predicting The Energizing Transients Of Station Capacitor Banks, Dennis Oliver Wiitanen

Doctoral Dissertations

"A model for predicting the transients associated with energizing ungrounded wye-connected station capacitor banks was developed. The model has the capability of simulating non-simultaneous operation of the breaker poles, pre-insertion resistors, and the presence of previously energized capacitor banks at the same station. To investigate various system representations, a computer solution of the transient response of an arbitrary network and the computer solution of the generalized Thevenin impedance of a complex network are presented. A simple power system is defined and used to investigate the modeling of various system components, using the computer solution methods. Simplification of the model due …

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A Simulation And Diagnosis System Incorporating Various Time Delay Models And Functional Elements, David Michael Rouse Jan 1970

A Simulation And Diagnosis System Incorporating Various Time Delay Models And Functional Elements, David Michael Rouse

Doctoral Dissertations

"The application of digital simulation to all phases of digital network design is considered here as oppossed [sic] to development of simulation for one or two restricted parts of the digital process. For this reason a simulator is presented which can be consistent by varying the level of expression from the simulation of architectural structures to such detailed simulation requirements as race analysis of asynchronous sequential circuits. In order to make system simulation more than just an idea, it must be capable of handling large circuits in reasonable times. It is demonstrated that functional simulation has the potential to increase …

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A Study Of The Anodic Oxidation Of 1, 3-Butadiene On Platinum And Gold Electrodes, Arun Kumar Agrawal Jan 1970

A Study Of The Anodic Oxidation Of 1, 3-Butadiene On Platinum And Gold Electrodes, Arun Kumar Agrawal

Doctoral Dissertations

"The anodic oxidation of 1,3-butadiene on Pt and Au electrodes was studied at 70°C in solutions of H₂SO₄, K₂SO₄, K₂CO₃, and KOH with pH's ranging from 0.35 to 12.5. Reaction rates (current) were measured as a function of potential, pH, temperature, and butadiene partial pressure. A transition region (apparently a shift in the rate determining step) in case of Pt was observed in the Tafel plots. The coulombic efficiencies of oxidation to CO₂ were 85 percent in 1 N H₂SO₄ on Pt, 93 percent in 1 N KOH on Pt, and 72 percent in 1 N KOH on Au"--Abstract, Page …

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Absolute Excitation Cross Sections Of He⁺ In 20-100 Kev He⁺-He Collisions Using Energy-Loss Spectrometry, Donald Roy Schoonover Jan 1970

Absolute Excitation Cross Sections Of He⁺ In 20-100 Kev He⁺-He Collisions Using Energy-Loss Spectrometry, Donald Roy Schoonover

Doctoral Dissertations

"Application of positive-ion energy-loss spectrometry has been extended to include experimental determination of absolute excitation cross sections of ground state helium ions. Helium ion-atom collisions were studied for impact energies ranging between 20-100 keV, in 10 keV intervals. The data were taken with an apparatus resolution between 0.6-o.8 eV FWHM. Cross sections for transitions from ground state to the second and third principal quantum levels of the ion plotted as a function of impact energy were still rapidly increasing at 100 keV. The cross sections at this energy were 1.64(± 0.28) x 10⁻¹⁸cm² for He⁺(l²s1/2) -> He⁺(n = …

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Completeness And Related Topics In A Quasi-Uniform Space, John Warnock Carlson Jan 1970

Completeness And Related Topics In A Quasi-Uniform Space, John Warnock Carlson

Doctoral Dissertations

"Completions and a strong completion of a quasi-uniform space are constructed and examined. It is shown that the trivial completion of a T₀ space is T₀ . Examples are given to show that a T₁ space need not have a T₁ strong completion and a T₂ space need not have a T₂ completion. The nontrivial completion constructed is shown to be T₁ if the space is T₁ and the quasi-uniform structure is the Pervin structure. It is shown that a space can be uniformizable and admit a strongly complete quasi-uniform structure and not admit a complete uniform structure. Several counter-examples …

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Development And Application Of Cartesian Tensor Mathematics For Kinematic Analysis Of Spatial Mechanisms, Robert Myrl Crane Jan 1970

Development And Application Of Cartesian Tensor Mathematics For Kinematic Analysis Of Spatial Mechanisms, Robert Myrl Crane

Doctoral Dissertations

"The complexity of spatial mechanisms in themselves and the absence of an attractive analytical tool for their study has left this field of engineering analysis largely unexplored. In recent years several analytic methods have emerged. One of the most attractive of these is the tensor method. Literature surveys reveal that the tensor method is largely unexploited in the U.S.A., with regard to spatial mechanisms as well as simpler kinematic problems. The purpose of this work is to develop tensor mathematics for application to the kinematic analysis of spatial mechanisms. Methods are developed for position solutions and the determination of velocities …

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Discrimination Of Signal And Noise Events On Seismic Recordings By Linear Threshold Estimation Theory, David Nuse Peacock Jan 1970

Discrimination Of Signal And Noise Events On Seismic Recordings By Linear Threshold Estimation Theory, David Nuse Peacock

Doctoral Dissertations

"The object of this study is the investigation of a linear threshold element technique for identifying surface multiples on a single seismic trace. Traces of seismic events were generated which contained primaries, surface multiples, and various levels of Gaussian random noise. Since it was necessary to separate the events as much as possible, the traces were subjected to pulse-compression deconvolution processing prior to LTE analysis. Mean frequency, peak frequency, amplitude spectrum variance, periodicity, and polarity were employed as pattern parameters. A set of weights was found that would maximize the moment of inertia of the S line distribution of the …

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Investigation Into The Monotonic Magnetostriction And Magnetic Breakdown In Cadmium, James Milo Carter Jan 1970

Investigation Into The Monotonic Magnetostriction And Magnetic Breakdown In Cadmium, James Milo Carter

Doctoral Dissertations

"Observations of the monotonic magnetostriction of cadmium at 4.2 K and in fields of 65 kilogauss have been made. The angular dependence of an extremal point (Hm) in the monotonic magnetostriction is found to follow inverse cosine behavior. The magnitude of Hm (27 kG) for fields parallel to [0001] is in fair agreement with the onset of γ1/3 from the breakdown of the trifoliate orbit, γ. The range of observation of hm coincides with the reported range of the trifoliate orbit. A "klink" in the monotonic magnetostriction is demonstrated. The "klink" field, Hk, …

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Investigation Of Liquid Carryover In The Girdler-Sulfide Process For Production Of Heavy Water At The Aec Savannah River Plant, Samuel Clark Allen Jan 1970

Investigation Of Liquid Carryover In The Girdler-Sulfide Process For Production Of Heavy Water At The Aec Savannah River Plant, Samuel Clark Allen

Doctoral Dissertations

"An investigation of the causes of liquid carryover in the Girdler-Sulfide process for the production of heavy water was carried out using 12 samples of carbon collected over a one-year time period. Organic impurities from the feedwater were concentrated by adsorption on carbon. Studies of methods for the drying of carbon showed that freeze drying resulted in the minimum reproducible moisture retention without gross loss of the adsorbed organic materials. Rotary vacuum evaporation and air drying of beds of carbon were proven to be less efficient. A study was made of the variables which affect extraction efficiency by the Soxhlet …

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Mass Transfer From Spherical Gas Bubbles And Liquid Droplets Moving Through Power-Law Fluids In The Laminar Flow Regime, Cheng-Chun Huang Jan 1970

Mass Transfer From Spherical Gas Bubbles And Liquid Droplets Moving Through Power-Law Fluids In The Laminar Flow Regime, Cheng-Chun Huang

Doctoral Dissertations

"Continuous phase mass transfer coefficients are presented for internally circulating spheres of a Newtonian fluid traveling through a power-law type continuous phase in to so-called creeping-flow region. The Nakano and Tien stream functions allow the Sherwood number to be determined as a function of the Peclet number, power-law index, and a viscosity ratio parameter. The Hirose and Moo-Young relation is shown to be a limiting case of this solution. Mass transfer rates increase as the fluids become more pseudoplastic and/or the continuous phase consistency index increases, all other factors held constant"--Abstract, page ii.

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Numerical Simulation Of Forward Combustion In A Radial System, Tommie C. Wilson Jan 1970

Numerical Simulation Of Forward Combustion In A Radial System, Tommie C. Wilson

Doctoral Dissertations

"A generalized mathematical model is described for the thermal recovery of oil in a radial system in which there are conductive heat losses to the surrounding formations, three phase fluid flow, conductive-convective heat transfer within the producing formation, combustion, and aqueous-phase changes considered. The mathematical form of the temperature equation requires that numerical solutions be obtained with a digital computer for which the numerical approximations of the partial differential equations are presented and the results discussed. The analysis is applied to field size simulations of a forward combustion project to permit direct field analyses of significant importance for accurate reproductions …

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Search Algorithms For The Simple Plant Location Problem, John Bruce Prater Jan 1970

Search Algorithms For The Simple Plant Location Problem, John Bruce Prater

Doctoral Dissertations

"Two algorithms are developed, one exact, one approximate, for finding solutions to the simple plant location problem. Theorems are proved which give sufficient conditions for the inclusion of a plant in the optimal solution. The exact algorithm which is developed is similar to the Branch and Bound method. The approximate technique consists of a directed search through the solution tree for the problem, followed by terminal iterations. The terminal iterations are justified by empirical results obtained from a preliminary version of the technique and a theorem which is proved. Statistics from the results of applying the algorithm to a large …

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The Smelting Of Lead Drosses, Humberto Adolfo Arzabe Jan 1970

The Smelting Of Lead Drosses, Humberto Adolfo Arzabe

Masters Theses

"The constitution of the matte and bullion obtained by the smelting of lead drosses coming from the cooling of lead blast furnace bullion was investigated by metallographic, chemical, electron-microprobe, and X-ray means. At smelting temperatures (1200°C to 1300°C) two liquid phases are in equilibrium. A liquid lead phase with low concentrations of copper and sulfur, and a lighter liquid matte phase containing a high concentration of copper and sulfur with some dissolved lead. On cooling to room temperature the matte precipitates cuprous sulfide, a eutectic mixture of cuprous sulfide and lead sulfide with a deficiency of sulfur, and metallic lead …

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Analysis Of Elastic Thermal Stresses By Station-Function Collocation Methods, Jaw-Kuang Wang Jan 1970

Analysis Of Elastic Thermal Stresses By Station-Function Collocation Methods, Jaw-Kuang Wang

Masters Theses

"An approximate method for the solution of thermal stress problems is presented. The method makes use of polynomial approximations to reduce the partial differential equation to a system of linear algebraic equations or a set of first-order ordinary differential equations. This results in satisfying the differential equation at a finite number of stations. The boundary conditions are satisfied identically. Two examples of the method, presented in detail, indicate that the solutions of the biharmonic equation for the stress function and the Fourier equation for the temperature distribution have good accuracy with a minimum of labor. A generalized method is derived …

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Electric Field Strength Dependency Of The Rate Of Radiation Induced Degradation In Silicon Planar Devices, Cyrus Hoshang Irani Jan 1970

Electric Field Strength Dependency Of The Rate Of Radiation Induced Degradation In Silicon Planar Devices, Cyrus Hoshang Irani

Masters Theses

"The investigation of electric field strength dependence of the rate of damage introduction, caused by gamma and neutron irradiations in matched is reported. Groups of devices (with varying biases applied to the emitter-base and collector-base junctions to allow study of the electric field strength dependence) were exposed to ionizing gamma radiation from a Co-60 source. Similar experiments were conducted to study the field strength dependence of the rate of space-charge volume damage introduction, caused by fast neutrons (E> l0keV, fission source). The experimental results indicate that the rate of surface degradation, as reflected by the increase of the normalized surface …

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Effect Of Inclination On Film Boiling, Shih-Chang Lin Jan 1970

Effect Of Inclination On Film Boiling, Shih-Chang Lin

Masters Theses

"The object of this investigation was to determine the effect of inclination on the heat transfer for film pool boiling. The test plate used as the heater was made of Inconel-600 and heated electrically. Liquid nitrogen at atmospheric pressure was used as the test fluid. The heater was oriented at various angles from the horizontal position with the heater surface facing both upward and downward and the heat transfer coefficient was determined for each angle over temperature differences ranging from 450ºF to 750ºF. As the heater angle was increased from 0º (horizontal) to 90º (vertical), the heat transfer coefficient increased …

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Re-Design Of Cloud Chamber Instrumentation, Stanley Forrest Vaninger Jan 1970

Re-Design Of Cloud Chamber Instrumentation, Stanley Forrest Vaninger

Masters Theses

"Instrumentation and a new valving system is designed and built for use with an expansion type cloud chamber. Digital equipment is used for timing to improve reliability, accuracy, and flexibility, and a servo system is built using a lead compensator circuit which improves the servo system typically used with cloud chambers. Special care was taken to eliminate the sources of noise that appear in the amplified signal from the pressure transducer. The equipment needed to measure, record, and calibrate the pressure inside the chamber is built"--Abstract, page ii.

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Statistical Estimate Of Positional Error Inherent In Very Low Frequency Radio Navigation (Range-Range), Jimmie D. Mcginnis Jan 1970

Statistical Estimate Of Positional Error Inherent In Very Low Frequency Radio Navigation (Range-Range), Jimmie D. Mcginnis

Masters Theses

"To determine the effectiveness of Very Low Frequency (VLF) navigation in certain areas of the world, it is necessary that a method be developed to estimate the positional error associated with VLF relative positioning techniques. This paper presents a method which consists of a least-mean-squared procedure to sum up the errors contributed by each station being monitored. Since phase jitter (i.e., phase fluctuation) is a random variable, a statistical approach is employed to produce a one Σ ellipse centered about the true position. In short, this method defines the size and orientation of an area called an error ellipse which …

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