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Stress Histories Of Bridge Members From Scratch Gage Records, Ronald D. Hughes

Kentucky Transportation Center Research Report

This report describes the use of scratch gages for obtaining strain histories of bridge members. Basic components of the gage are designated and its operation is described in general terms. Stress histories, deduced from strain records, for various members of three bridges obtained through use of the gages are presented. A procedure for use in replicating sections of deteriorated members is described.

Electron Cyclotron Radiation Measurements To Determine Relative Electron Temperatures In A Low-Density Magnetic-Mirror Plasma System, Andrew L. Gardner

Faculty Publications

Measurements of the electron cyclotron radiation emitted from the plasma of the Alice system were made using a synchronous detection microwave radiometer in the range of 10.2 - 11.6 GHz. Both sidebands were used to sample radiation from two nested closed shells within the plasma. For a tenuous plasma this radiation is proportional to the product of the electron density and the electron temperature. Since measurements of the plasma density were available from other detectors, relative values of the electron temperature were obtained using the measured radiation intensity.

Another Look At Hydroplaning, Tim Brady

Publications

This article examines the factors contributing to the hydroplaning of aircraft tires on airport runways: ground speed, tire pressure, and water depth vs. tire tread depth. Aircraft weight does not bear any affect on aircraft tire hydroplaning.

Gain And Dispersion Focusing In A High Gain Laser, Lee W. Casperson, Amon Yariv

Electrical and Computer Engineering Faculty Publications and Presentations

The transverse modes of a laser resonator containing a medium with a strong radial gain profile differ greatly from the modes of a similar resonator containing a low gain medium. Focusing and defocusing effects result from the gain profile and from the associated dispersion profile. The dispersion focusing causes an asymmetry in the power output as the laser is tuned across the gain line. The theory has been verified using a high gain 3.51-µ xenon laser.

Cold-Formed Steel Structural Elements Subjected To Time-Dependent Loading, Charles G. Culver

CCFSS Library (1939 - present)

This report summarizes the results obtained from a comprehensive study of the behavior of thin-walled, cold-formed members subjected to impact or shock loading. The influence of local buckling and the concept of effective width in the elastic post-buckling range on the dynamic response of these members is described. Analytical and experimental results for thin compression elements, beams and columns are discussed. Comparisons between the analytical and experimental results are presented. Application of the results obtained from this research to practical situations involving impact or shock loading of cold-formed members is also discussed.

Column Research Council Proceedings, Fritz Engineering Foundation

CCFSS Library (1939 - present)

These Proceedings are a record of the Annual Meeting containing the abstracts of the reports presented and the transcription of our panel discussion.

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

CCFSS Library (1939 - present)

INTRODUCTION In steel design, the Specification for the Design of Cold-Formed Steel Structural Members l issued by the American Iron and Steel Institute has long been used for structural members cold-formed to shape from steel sheet or strip used for load-carrying purposes in buildings and other thin walled steel structures. Even though no thickness limitation was included in previous editions of the Specification, 2,3, the thickness of material used in the cold-formed steel construction was often limited to about 1/4 inch because the maximum thickness of steels used under all ASTM Specifications listed in Section 1.2 of the AISI Specification …

Proceedings Of The 2nd International Symposium On Lower-Cost Housing Problems, Oktay Ural

International Symposia on Low Cost Housing Problems

To protect and improve the total human environment is a major concern of all the nations of the world. This is well noted in the recent activities of the United Nations. The provision of decent homes for every family of our world is an integral part of the human environment. It is this belief which generated the initial interest for the planning of the International Symposia on Lower-Cost Housing Problems.

The purpose of the Second International Symposium is many sided: to generate concern on the housing problems around the world as they exist today; to gather people who share mutual …

Table Of Contents, University Of Missouri--Rolla

International Symposia on Low Cost Housing Problems

No abstract provided.

Electrostatic Fluidized Bed Plastic Powder Coating Process, Richard H. Florer

Graduate Research Papers

The overall objective is the fabrication of a functional electrostatic fluidized bed dry plastic powder coating apparatus which can be utilized in an Industrial Arts laboratory.

Saddas; A Self-Contained Analog To Digital Data Acquisition System., Walter Anton Petersen

Dissertations and Theses

SADDAS, a. Self-contained Analog to Digital Data Acquisition System, converts analog voltage inputs to formatted BCD (binary coded decimal digital magnetic tape. SADDAS consists of a 16 channel multiplexer, a 17 bit (4 digits + sign) 40 microsecond analog to digital converter, a 512 byte 8 bit core memory, a 30 IPS (inches per second) digital tape recorder at a density of 556 cpi (characters per inch), and a controller which integrates these instruments into a flexible and easy-to-use system. Sampling rates in excess of 360 samples per second may be used when converting seven channels of data, such as …

Association Of College And University Telecommunications Administrators Presidents

ACUTA: Other Publications

ELWYN HULL

1980-1981

CONSTANCE GENTRY

1981-1982

L. STEVE HARWARD

1982-1983

MICHAEL A. TONER

1983-1984

RUTH A. MICHALECKI

1984-1985

JOHN W. SLEASMAN

1985-1986

MALCOLM READER

1978-1980

ELWYN HULL

1980-1981

CONSTANCE GENTRY

1981-1982

L. STEVE HARWARD

1982-1983

MICHAEL A. TONER

1983-1984

RUTH A. MICHALECKI

1984-1985

JOHN W. SLEASMAN

1985-1986

Bridges: Synthesis Of Load Histories And Analysis Of Fatigue, James H. Havens, Robert C. Deen

Kentucky Transportation Center Research Report

Repeated stressing of metals above certain limits induces inter- and intra-crystalline dislocations and cleavages and eventually cracks which propagate to failure. Some authorities consider crack propagation to be a separate and discrete stage in the failure process. The internal damage is insidiously cumulative and irreversible. This phenomenon was recognized as early as 1829 and was termed fatigue as early as 1839(1). From the beginning of fatigue testing (Wohler, 1858-1870), results have been reported as S-N, S-log N, or log S-log N curves, where N is the number of repetitions of stress S. From a structural design point of view, …

Wastewater Treatment Plant Control, David Milton Knowles

Retrospective Theses and Dissertations

This report is the result of investigation of the feasibility of increasing the use of autamatic controls at the Florida Technological University Wastewater Treatment Plant. This investigation was to include a literature search and visits to wastewater treatment plants. During the writers course of study, he was privileged to make a series of tests of a residual chlorine analyzer which was made in the school shop. Since this work was closely related to automatic controls the data are included in this report.

A Proposed Approach To Protect Wastewater Biological Treatment Plants Against Toxic Contaminants, Joseph M. Phillips

Retrospective Theses and Dissertations

No abstract provided.

Solid Waste Management At Florida Technological University, Robert F. Hever

Retrospective Theses and Dissertations

This paper is a report on a study of the management of solid wastes at Florida Technological University (FTU). This study endeavors to provide a basis for effective planning for disposal of FTU's solid wastes, both in the next few years and at the time of maximum FTU population. Essentially, the study affirms that the present system of refuse collection by a private contractor is the best method of disposal, with the possibility that recycling of mixed paper may become feasible at some future time.

Analog Computer Simulation Of Glomerulus Filtration In The Renal System, Earl W. Preston

Retrospective Theses and Dissertations

The first separation process in the kidneys occurs in the glomerulus where the blood plasma is filtered from the larger protein and blood cells. It is the object of this thesis to: 1) Simulate the volume flow equation (1) through the capillary vasculate of the kidney with the analog computer, and 2) Show quantitatively as well as qualitatively the effect of various parameter changes on the volume flow rate.

Theoretical Predictions Of Flow Profiles In Capillary Blood Vessels, Eileen Hallman

Retrospective Theses and Dissertations

The purpose of this thesis is to illustrate the nature of blood flow within capillaries by using familiar mathematical techniques. Because the circulatory system is so complex, the fluid dynamics of the system is prefaced by a discussion of the circulatory physiology in terms of geometry and physics. The understanding of the basic structures and functions of the circulatory components necessarily precedes the justification of assumptions. Several mathematical models which attempt to describe the fluid dynamics of blood flow phenomena are presented and discussed. The results of these models are correlated with existing experimental data in order to determine which …

Improvements To Sweep Circuits To Decrease Nonlinearity, William Daniel Wallis

Retrospective Theses and Dissertations

No abstract provided.

Remote Sensing Of Environmental Parameters, Wendell Princeton Perkins

Retrospective Theses and Dissertations

Atmospheric pollution in some degree has been around since time began. In recent times it has reached levels in some areas which proved to be harmful to man's health. A brief history review of these occurrences is presented. Laws have been enacted to combat this threat. A brief review of these laws is presented. Instruments for remote sensing of polluting sources are being developed to monitor ambient air quality and aid in enforcing these laws. A review of the techniques employed and the present state of the art is explored. Available instruments are presented in section III-5.

Localized Wastewater Treatment Facilities, Robert Russell Garrett

Retrospective Theses and Dissertations

The report describes an alternative to the use of septic tanks for invidual dwellings. The major problems confronting the larger wastewater treatment plants (0.012 to 10 million gallons per day) in central Florida are also discussed. Solutions in this report are for individual and multi-unit dwelling treatment systems (to 0.06 MGD). these units can provide 90% biochemical oxygen demand (BOD) and suspended solids (SS) removal in accord with new state and county regulations. A comparison of the large versus the small plants reveals that small innovative plants, though more expensive, are more environmentally sound than the poorly operated large facilities. …

Research Into Modular Construction, Richard L. Tash

Retrospective Theses and Dissertations

No abstract provided.

High Pressure Flange Design, Kermit Frederick Allerman

Retrospective Theses and Dissertations

This research report summarizes high pressure flange design techniques and considerations utilized by Pratt & Whitney Aircraft, Florida Research & Development Center, during its development programs for high pressure liquid rocket engines. The report covers: 1) Aspects of cooling, heating, pressure, and external loading with design safety factors 2) Cantilever type flanges optimized for weight 3) Seals and fastener considerations for 6000 psi environment 4) An example high pressure, cryogenic cantilever flange design

Conversion And Validation Of Sigart Program, A Progressive Traffic Signal Lights System Computer Model, Dennis F. Troyan

Retrospective Theses and Dissertations

The purpose of this research paper was to translate a Computer Model (SIGART), capable of simulating a progressive traffic signal lights system, from Burroughs B5500 FORTRAN II to the IBM 360 FORTRAN IV computer language, to outline the program algorithm, to set up detailed program documentation and to validate this model by applying practical system data. Expansion of the SIGART program by addition of an option to produce a time space plot of the output data utilizing a Calcomp plotter was also to be considered.

The Heat Treatment Of Soil By Microwaves To Control Pathogenic Parasitic Fungi, Dean Franklin Rich

Retrospective Theses and Dissertations

No abstract provided.

An Investigation Of Thermal Energy Potential In Florida Lakes As A Power Source To Arrest Conditions Of Oxygen Deficiency, John. Jackson

Retrospective Theses and Dissertations

No abstract provided.

Automation In Banking, Donald P. Matteson

Retrospective Theses and Dissertations

It has been estimated that the Apollo Program, which placed a man on the moon, each year produced enough paper work, that if put on one stack, would reach to the moon. The forthcoming Space Shuttle Program will require even more documentation; however, present plans call for very little paperwork. The necessary documentation will instead be created, updated and retained in a large computer data base with access throughout the country. Present technology will support this system. The banking industry has been faced with a similar problem in the processing of demand deposit records (checks) and other repetitive tasks. Banks …

The Restoration Of Lake Waters, Charles James Boyter

Retrospective Theses and Dissertations

Lake restoration procedures are reviewed with the objective of making recommendations toward future lake restorations for central Florida lakes. The progress of drawdown for restoration is examined. A total phosphorus model is developed for Lake Eola to predict the success of the drawdown. No one restoration procedure should be applied to every lake in central Florida. Each situation must be studied separately. It appears that lake drawdown was the best technique to use for Lake Eola. However, the stormwater inputs and free-flowing drains must be purified to insure the success of the drawdown or the Lake will return within the …

The Operations Research Approach For An Effective Management Information System, Joel L. Mutzman

Retrospective Theses and Dissertations

This report serves as an overview to the design of an effective Management Information System (MIS) by incorporating the modeling techniques of an Operations Research (OR) approach. It will be shown that the consideration of OR input requirements mixed with the information requirements for a data base existing at the everyday accounting and operational level creates a responsible management control and decision-making tool. This mix of OR and everyday information approach varies as a function of the managerial activities and the organizational level of effort. In lieu of designing a "total" MIS system, MIS designers should structure a loosely connected …

Electrostatic Precipitation, Robert C. Hinsey

Retrospective Theses and Dissertations

No abstract provided.