Engineering Commons^™

Test 1559: White Farm Equipment 4-270 Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1558: White Farm Equipment 4-225 Diesel 18-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

An Analysis Of The Heating And Densification Process During Rotational Molding Of A Thermoplastic Powder In A Uniaxially Rotating Cylindrical Cavity, Floyd Steven Ribe

Dissertations

This dissertation presents the results of an experimental and theoretical investigation of the heating and densification portion of the rotational molding process in a uniaxial, cylindrical mold.

A thorough literature survey is included which reviewed past analysis of the rotational molding process and other areas that assisted in understanding of the process.

The results presented in this dissertation included an analysis of the densification process by use of Scanning Electronic Microscope (SEM) photography producing intermediate correlations between the physical properties of the densifying material and neck radius of adjacent coalescing spheres. In addition, a hybrid experimental procedure coupled with a …

Flexible Engineering Software: An Integrated Workstation Approach To Finite Element Analysis, Brant Arnold Ross

Theses and Dissertations

One obstacle preventing more engineers from using finite element analysis (FEA) is the difficulty of transferring data between steps in the modeling process. A Fortran computer program, Rosetta.BYU, has been developed to open data paths between finite element preprocessors (mesh generators) and finite element analysis programs, using a custom data structure. It accepts neutral data files, Version 2.0 IGES data files, and Movie.BYU files for input/output. An application of Rosetta is described. A general workstation manager program, Davinci.BYU, is reviewed that provides a support layer between the engineer and the operating system, organizes software and data files, and facilitates on-line …

Structural Self-Shadowing And Its Effects On The Thermal-Structural Behavior Of Orbiting Trusses, Jack Mahaney

Mechanical & Aerospace Engineering Theses & Dissertations

The determination of structural shadowing is described. The computation of environmental heat loads for slender structural members in earth orbit is described, and two methods for finite element thermal analysis are described . The effects of self-shadowing on the thermal structural behavior of single truss members and two different trusses are presented. In each case the shadowing produces a noticeable effect on the temperature distributions on truss members, and on the deformations of the trusses.

Identification Of Technical Skills Required Of Industrial Robot Maintenance Technicians In Manufacturing, David James Goetz

Graduate Research Papers

The primary purpose of this study was to identify those technical skills required of industrial robot maintenance technicians in manufacturing.

Specifically, the study:

1) obtained the work/training background of industrial robot maintenance technicians active in the field,

2) identified the technical skills required of industrial robot maintenance technicians, and

3) identified the desired technical skills of industrial robot maintenance technicians.

A secondary purpose of the study was to provide manufacturing engineers/supervisors with a baseline for detailing a training program for robot maintenance personnel.

Unsteady Transonic Flow Over Slender Bodies, Cevdet Aydun

Mechanical & Aerospace Engineering Theses & Dissertations

The unsteady transonic small disturbance equation for an oscillating slender body is obtained from the full potential equation in cylindrical coordinates by means of a perturbation analysis. The time-dependent body-boundary condition is reduced into a simpler form by matching the outer and inner flows. Also, a time-dependent pressure coefficient over the slender body is derived by means of a matching principle. The simplified form of the body-boundary condition is incorporated into the difference equations at the body axis. This application allows use of the cylindrical coordinate system for the problem. By prescribing several different body-boundary conditions, various modes of body …

Analysis And Optimal Design Of Wind Tunnel Balances, Sung-Ling Twu

Mechanical & Aerospace Engineering Theses & Dissertations

The problem of finding the optimal cross-sectional shape of the elastic cage in wind tunnel balance is formulated and solved numerically. A mathematical model to implement the boundary condition associated with the elastic rigid connection into the finite element method is discussed. Numerical results show that the rigid connection at the end of the elastic cage has significant effect on the stress distribution.

The finite dimensional approach for a three dimensional design sensitivity analysis is derived. Using both the free and rigid boundary conditions, numerical examples are performed and comparisons of the accuracy of design sensitivity analysis between the proposed …

Analytic Forms Of Bidirectional Reflectance Functions For Application To Earth Radiation Budget Studies, Natividad Manalo Smith

Mechanical & Aerospace Engineering Theses & Dissertations

Reflected solar radiative fluxes emerging from the Earth's top of the atmosphere are inferred from satellite broadband radiance measurements by applying bidirectional reflectance functions (BDRFs) to account for the anisotropy of the radiation field. BDRFs are dependent upon the viewing geometry (i.e. solar zenith angle, view zenith angle, and relative azimuth angle), the amount and type of cloud cover, the condition of the intervening atmosphere, and the reflectance characteristics of the underlying surface. A set of operational Earth Radiation Budget Experiment (ERBE) BDRFs is available which was developed from the Nimbus 7 ERB (Earth Radiation Budget) scanner data for a …

Test 1557: Kubota M8950dt And M8950 Diesel 24-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1555: Kubota L3750 Fwd And 2wd Diesel 8-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1556: Kubota L4150 Fwd And 2wd Diesel 8-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Fan-Shaped Loader For Making A Loosely Felted Mat Of Aligned Wood Flakes, Gordan P. Krueger, Anders E. Lundi, Roy D. Adams

Michigan Tech Patents

Apparatus for forming an elongated continuous mat of elongated wood flakes mixed with a binder and adapted to be compressed to form a densified composite wood product for continuously depositing wood flakes on that supporting surface and for aligning the elongated wood flakes being deposited in mutually parallel relation and in alignment with the direction of movement of the supporting surface. A hopper for containing wood flakes deposits wood flakes into the upper end of a fan-shaped flake loader comprised of a plurality of channels positioned in side-by-side relation and sloping downwardly from the hopper to a supporting surface. The …

Flake Feeder Aligner Including Reciprocating Baffles, Tauno B. Kilpela

Michigan Tech Patents

Apparatus is described for forming a loosely felted mat of elongated wood flakes, the wood flakes being aligned in parallel relation and parallel to the longitudinal direction of the mat. The apparatus includes a former for depositing wood flakes on a support surface in a uniformly dispersed, loosely felted relation, and a plurality of vertically oriented baffles positioned below the former and in mutually parallel alignment. The baffles include a first set and a second set with respective ones of the second set of baffles being positioned between respective ones of the baffles of the first set. The baffles of …

Test 1553: Massey- Ferguson 1030 Diesel 12-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Noninvasive Detection Of Arterial Occlusive Disease: A Theoretical And Model Study, Lauren I. Stratouly, William W. Durgin, Frederick A. Anderson Jr., H. Brownell Wheeler

Office of the Provost Scholarship

To develop a noninvasive method of detecting arterial occlusive disease, pulse waveforms were recorded at two locations on the lower extremities of young normal volunteers and patients with arteriographically confirmed arterial occlusive disease. Pulses were monitored using impedance plethysmography at the knee· and the iliac regions. The frequency spectra of the abnormal iliac waveforms contained 4-5 harmonics as compared to the 2-3 harmonics present in normals'. It was hypothesized that the occurrence of high frequencies resulted from pulse wave interactions with diseased portions of the vessel. This paper will present the results of a theoretical and experimental model developed to …

Test 1554: Massey-Ferguson 1040 Diesel 12-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1552: Massey-Ferguson 1020 Diesel 12-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

On Circular Hvac Duct Design Through Stress Analysis, Chien-Chung Lee

Theses

In this thesis, comprehensive studies through stress analysis of the circular HVAC ducts are made. The ducts are made of thin gaged steel sheet, and reinforced by stiffeners that are made of hot-rolled steel sections of L or C shapes. The ducts are loaded with pressure, its own weight and the possible seismic accelerations. A comprehensive FORTRAN program is developed as an aid Lo achieving the optimum design of circular ducts, i.e. duct thickness, stiffener spacing, stiffener size and seismic span length, Several stress analysis tables and a design parameter plot arc, provided in this thesis Lo facilitate design optimization.

A Diagnostic Study Of Burning Black Powder Via Stroboscopic Laser Schlieren Photography, Donald Bruce Rowland

Theses

The combustion processes and products of a single grain of burning black powder were experimentally investigated via the stroboscopic laser schlieren photographic technique. A high power modulated argon laser system was used in conjunction with a streak camera to provide a dynamic sequence of time resolved, high resolution schlieren photographs of a burning black powder grain. When black powder burns, a multi-phase product is produced consisting of hot gases, solid particles, and a molten liquid spray. The expansion processes of this multi-phase product cloud were recorded and characterized. Molten drops, reactive and nonreactive particles within as well as outside of …

A Cogeneration Industrial Park In An Urban Environment In The Year 2000, Raymond T. Scott

Theses

An investigation into the feasibilty of placing an industrial park in an urban environment in the year 2000 was made. A selected cogeneration facility located within the park would supply electricity and process steam to the industries with minimal transmission costs and environmental effects. A projection was made on the industries that would exhibit growth to the end of this century, and yet be environmentally benign in nature. These industries would be placed within the industrial park. The selection of the cogeneration facility was based upon projections of fuel availability, environmental factors and available technologies. Socio-economic factors and the effects …

Comparative Study Of Computational Methods For Kinematics Of Mechanism Analysis, Ren-Jea Wang

Theses

This thesis introduces three numerical methods of solving nonlinear algebraic equations, i.e. Newton's method, Brown's method, and Brent's method, and applies these methods to kinematics of mechanism problems for comparative study.

Firstly, each method is reviewed in some detail. Then experimental computer programs, NABKAP(Nonlinear Algebraic equations Based Kinematic Analysis Programs), are developed based on the above methods and used to solve kinematic of mechanism problems. Example problems include various kinds of four-bar mechanisms and two degree of freedom mechanism. Lastly, each technique is compared with the others based on the above computational experiences.

The FORTRAN programs used for this study …

Window Treatment For Energy Conservation, Florida Solar Energy Center, Ross Mccluney

FSEC Energy Research Center®

This Energy Note gives the non-technical reader a clear look at windows - how to get the most from them in cooling, heating, ventilating and illuminating the home. Although most of the points are applicable anywhere in the country, emphasis is on summer solar heat gain experienced in buildings in Florida. Two common features of Southern building style are large window areas to let the light and breezes in, and shading devices or window films to keep the hot sunshine out. This energy note addresses design guidelines and strategies as well as shading devices and window films for existing windows.

Microcomputer Based Digital Image Processing System Developed To Count And Size Laser-Generated Small Particle Images, K. D. Ahlers, D. R. Alexander

Department of Mechanical and Materials Engineering: Faculty Publications

A microcomputer-based digital image processing system has been developed to count and size laser-generated small particle images. Processing rates of 5 to 600 frames per minute were achieved by utilizing a real-time digital image processor. Particles from 7 to 700 µm in the plane of focus were counted and sized. A major emphasis in this work was to determine the basic problems and limitations involved with using a digital image processing scheme to accurately size particles. Areas that were investigated include the effect of the threshold level on measured particle size, particle boundary diffraction gray-level gradients, and geometric nonlinearities introduced …

Plasma Polymerization Investigated By The Substrate Temperature Dependence., H. Yasuda, Cheng Wang

Chemistry Faculty Research & Creative Works

In the reported experiments, plasma polymerization of tetrafluoroethylene (TFE), perfluoro-2-butyl-tetrahydrofuran (PFBTHF), ethylene, and styrene were investigated in various combinations of monomer flow rates and discharge wattages for the substrate temperature range of minus 50 to 80 degree C. The polymer deposition rates can be generally expressed by k//o equals Ae** minus **b**t, where k//o is the specific deposition rate given by k//o equals (deposition rate)/(mass flow rate of monomer), A is the preexponential factor representing the extrapolated value of k//o at zero absolute temperature, and b is the temperature-dependence coefficient. It was found that the value of b is not …

Nebraska Summary: S002 Deutz-Allis 7145, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary: S112 S.A.M.E Laser 100vdt, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary: S006 Deutz-Allis 6275, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary: S005 Deutz-Allis 6265, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary: S054 Ford 8210, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …