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A Theoretical And Experimental Analysis Of A Hall Generator, David L. Endsley

Electrical and Computer Engineering ETDs

This is a study of the behavior of a "Hall Effect" device by theoretical and experimental methods to determine if its operation may be predicated for various magnetic fields, output resistances, operating temperatures, input resistances, input control currents, and device construction.

This information should prove useful in the design of a circuit where the use of a "Hall Effect" device is contemplated.

An Experimental Method For Three-Dimensional Dynamic Stress Analysis, Larry E. Williams

Mechanical Engineering ETDs

It is the purpose of this thesis to present an evaluation of a method of experimental dynamic stress analysis utilizing electrical resistance strain gauges located internally. If it can be shown that the proposed experimental procedure is valid, then the transient stress phenomena could be continuously recorded from an internal, integral strain gauge placed at any desired location and in any orientation in a suitable model.

A Reactor Transfer Function Analyzer, Earl O. Swickard Jr

Electrical and Computer Engineering ETDs

This thesis describes the design of a device for determining the transfer function of a nuclear reactor. A number of different methods have been successfully employed for this purpose but were, in some cases, tedious or required the use of delicately balanced components. The equipment described computes values which are simply related to the values of the transfer function and is operable over a frequency range of about 1000:1. The time required to obtain data for one frequency point is two minutes or less. No precise adjustment is necessary during operation.

A Study Of The Application Of Digital Computers For Controlling Vehicle Traffic At A Signalized Intersection, John V. Wait

Civil Engineering ETDs

This study outlines a method whereby a small, specialized "on-line" digital computer could be used to control urban vehicle traffic at a signalized intersection. In the basic system proposed, the computer uses as input data a "history" of the instantaneous vehicle flow, in terms of number of cars arriving and arrival time. The data are stored for a period of 240 seconds in a magnetic drum memory. Once each 1/2 second, the computer examines the arrival pattern of cars and compares the delay being imposed on the waiting cars versus the delay which would be imposed on the cars on …

Transient Response Of A Mass Mounted On A Nonlinear, Strain-Rate Sensitive Element, Wiley T. Holmes

Electrical and Computer Engineering ETDs

The object of the present transient movement study was not that of investigation of response of a nonlinear system alone, but was projected to include the effect of a strain-rate sensitive, nonlinear restoring element.

Shear Strength Of Simply Supported Prestressed Concrete Beams Having Web Enforcement, Randolph E. Holt

Civil Engineering ETDs

The problem of shear strength in pre-stressed concrete beams is analogous to that in ordinary reinforced concrete, since there is very little difference between reinforced concrete and pre-stressed concrete beams in the cracked condition. Until very recently, the knowledge of the shear strength of reinforced concrete members and pre-stressed concrete members was wholly statistical. Developments in the last few years have advanced it to the semi-empirical level, ^5,6,7 but our knowledge of the effect that shear has on the ultimate strength of reinforced and pre-stressed concrete members is still far from complete.

The Effect Of Capillary Bleeding On The Compressive Strength Of Concrete, James L. Cramer

Civil Engineering ETDs

The purpose of this study was to determine the effect that bleeding has upon the compressive strength of concrete. Keeping in mind that the compressive strength of a concrete depends highly upon the water, cement ratio, it was reasonable to expect that the changing of the water content of the fresh concrete by bleeding would have a definite effect on the final compressive strength. While tests upon tests and studies upon studies have been made of cement and concrete, few, if any, have been concerned with this problem.

Effect Of Strain Rate And Temperature On The Stress-Strain Characteristics Of Plastics, Walter W. Joseph

Mechanical Engineering ETDs

The stress-strain characteristics of a material are a measure of the energy absorption characteristics of that material. Generally, plastics show permanent deformation at low values of strain but will withstand a large amount of strain before reaching their ultimate strength. Therefore, in effect, plastics are good energy absorbing materials. If the packaging designer could predict the effect of variation in strain rate and temperature on the stress-strain characteristics of a given plastic, his designs would be more reliable.

Transistor Distributed Amplifier, Bill J. Harper

Electrical and Computer Engineering ETDs

For the purpose of this report, it is assumed that the behavior of the transistor can be predicted from the study of a suitable circuit model or equivalent circuit of the transistor. It is further assumed that, except for the intrinsic short-circuit current gain, the circuit parameters of he transistor are independent of frequency and temperature. The primary interest in the study of transistor distributed amplifier here is the amplitude of the voltage gain in the amplification of video frequencies. Somewhat less detailed studies are made of the distributed amplifier in band-pass applications.

An Amplitude-Stable, Fixed-Frequency Transistorized Power Supply, Bobby O. Allen

Electrical and Computer Engineering ETDs

The subject of this paper is the design of an ultrastable, fixed- frequency power supply capable of maintaining a high degree of amplitude stability over a wide range of resistive load values. The requirement for such a power supply originally arose in connection with the design of a particular piece of test equipment required by Sandia Corporation. No attempt will be made in this paper to justify or explain the necessity for the specified design criteria outlined in the following paragraphs other than to adequately define the design criteria.