Engineering Commons^™

Test 1576: Deutz-Fahr Dx 6.50 Diesel And Deutz-Allis 7120 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 1573: Ford 2810 (8x2) 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 1572: Zetor 7245 And 7211 Diesel 10-Speeds, 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 1571: Zetor 5245, 5211, 3320 And 3340 Diesel 10-Speeds, 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 …

Utilization Of Electronic Spreadsheets For Laboratory Data Analysis, C. F. Maguire Iii, William W. Durgin

Office of the Provost Scholarship

The utilization of business spreadsheets for laboratory data manipulation is discussed. The spreadsheet, LOTUS 1-2-3, is presently being utilized to store and analyze data obtained from a deep cavity resonator type apparatus. Methodology for the analysis, from non dimensionalization of parameters, to relevant plotting of data pairs, is presented. All discussions are based upon current theory, and laboratory observations of flow induced resonance in deep cavities.

Analyses Of Quasi-Isotropic Composite Plates Under Quasi-Static Point Loads Simulating Low-Velocity Impact Phenomena, Ajit Dhundiraj Kelkar

Mechanical & Aerospace Engineering Theses & Dissertations

Composite laminates have high strength to density ratios that make them attractive for use in aircraft structures. However, the damage tolerance of these materials is limited because they have very low ultimate strains, no plastic deformation range, and no usable strength in the thickness direction. These limitations are very obvious when laminates are subjected to impact loads. Due to these impact loads, laminates suffer visible and invisible damage. To improve the material performance in impact requires a better understanding of the deformation and damage mechanics under impact type loads.

In thin composite laminates, the first level of visible damage occurs …

Analog Computer Simulation With Automatic Scaling By Digital Computer, Mark Anthony Motter

Electrical & Computer Engineering Theses & Dissertations

A computer-aided design approach for the simplification of analog computer simulation is presented. The simulation configuration consists of an EAI 2000 analog computer with serial communications link to a PDP — 11/24 digital computer. Under control of the PDP-11, the analog simulations are realized with appropriate time and magnitude scaling which adjusts the range of the simulation coefficients and prevents overloads of the analog components. The analog computer hardware configuration accommodates both stable plants up to eighth order and closed-loop systems up to tenth order. Cascade compensation is provided for the closed-loop systems.

The plant may be described by either …

Design, Installation And Preliminary Operational Results Of A Photovoltaic Tracking Research Facility. 10 P. 10-85. Copies 1, 2., Florida Solar Energy Center, Henry Healey

FSEC Energy Research Center®

This paper describes the design, construction, installation and operation results of the Florida Solar Energy Center (FSEC) photovoltaic tracking research facility. The facility was designed to test and compare the performance of stationary and tracking flat-plate and concentrating photovoltaic systems on a side-by-side basis and to obtain insolation data on one and two-axis tracking surfaces. The solar resource data will be used to compare the relative amounts of insolation available to the various surfaces for use in system design studies and computer model validation.   The purpose of this testing is to determine the performance benefits for the various tracking system …

Deformation And Fracture Of Nodular And Grey Ferritic Cast Irons, Maha El Koshairi

Archived Theses and Dissertations

No abstract provided.

Test 1567: Versatile 836 Powershift 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 …

Buckling Of Some Grooved Columns, Clovis Georges Baaklini

Theses

Columns with two types of transverse grooves are analyzed: a one-sided groove whose bottom is parallel to a vertical plane and cross-section is constant, and a concentric uniform groove. Then, for illustration and to be more specific, round columns are selected such that the cross-section becomes partially circular, for one-sided grooves and totally circular for a concentric groove. The columns are simply supported at both ends and subjected to a compressive eccentric load P at eccentricity e. The static equilibrium of such columns is studied via two types of solutions: the solution to three-segment column and a substantially simpler but …

The Effects Of Ultrasonic Excitation Of A Hydrocarbon Fuel On The Performance Characteristics Of A Spark Ignition Engine, Michael John Kooman

Theses

A six cylinder, 200 cu. in. spark ignition engine, model 1-AC-100-200 manufactured by Ford was tested by means of a Clayton dynamometer, model 8-200. The purpose of the test was to establish a reference base and to determine the effects of ultrasonic excitation on performance and combustion characteristics of the internal combustion engine. Variable load tests were performed at full throttle, 90% throttle, 60% throttle, and 40% throttle for the standard carburetor and the carburetor modified for ultrasonic excitation. Power was supplied by a Firbra-Sonics, model G-100 Mark 3, Ultrasonic generator. Exhaust gas concentrations were measured by means of a …

Evaluation Of Pressure Capacity Of Rectangular Hvac Duct Plates, Ming-Tui Liu

Theses

The purpose of this thesis is to evaluate the pressure capacity of the duct plates for HVAC design as recommended by Sheet MeLal and Air Conditioning Contractors' National Association, Inc, 1980, whose code is based on the theories of both one-dimensional and two-dimensional analysis. Various sizes of duct width and stiffener spacing for rectangular plates are investigated, Charts and plots are Provided to facilitate the HVAC desidn. A BASIC language program and disc for personal computer is also provided.

Computer Simulation Of Drop Weight Impact Tests On Plastic Parts Or Sheeting, Upendra V. Patel

Theses

The ASTM D3029 drop weight test on plasic parts or sheeting is simulated in this thesis. The simulation is accomplished by using the Bruceton staircase method or the Up-and-Down method and the normal distribution theory. The "Probit" method is also analyzed.

The simulation programs are done in FORTRAN computer language. First, the random number generator is used to find the probability value between 0 and 1.0. Then, the cumulative probability distribution formula is used to find the absolute standard normal value. This absolute standard normal value is converted in to X normal value using given input values of mean and …

Development Of Robotic Arm Models Using The Integrated Mechanisms Program, Mohan J. Somnay

Theses

The purpose of this thesis is to study the broad concepts and applications of robots in industry and to evaluate the Integrated Mechanisms Program (IMP) for the development of models to suit the requirements of an industrial robot.

IMP is a programmed system for the computer-aided-design and analysis of mechanisms. The use of IMP to analyse and design mechanisms is done through a related problem oriented language which allows a variety of joints to be used.

This thesis describes a general procedure for designing robotic arms. Two mechanisms are modelled using IMP; the first is a jointed arm robot executing …

Skyline Technique For Least Square Temporal Finite Element Method, Ying-Woei Hu

Theses

Skyline technique is known to be one of the most efficient numerical methods for solving symmetric and positive definite simultaneous linear algebraic equations whose coefficient matrix is banded and sparse. This technique considers non-zero elements below the skyline only and manipulates Gaussian elimination process efficiently.

In recent years, the finite element methods applied to discretize the space domain has been successfully extended to time domain discretization. This new technique, temporal finite elements, makes it possible to numerically solve initial value problems in a manner similar to boundary value problems.

This thesis introduces skyline technique to one of the temporal finite …

Axisymmetric Air Jet Impinging On A Hemispherical Convex Plate, Salahuddin Qureshi

Theses

This experimental study was carried out on an axisymmetric air jet impinging normally on a smooth, hemispherical convex plate. Three different nozzles of diameters 0.5in.(12.7mm), 0.375in.(9.525mm) and 0.25in.(6.35mm) were used and the nozzle exit Reynolds number varied from 14,000 to 80000.

The impingement hemispherical plate was made of brass and had a nominal outer diameter of 7.48in (189.99mm).

Calibrated Pitot tubes, U-tube manometer and a micromanometer were used for pressure and velocity measurements. The Pitot tubes were mounted on Precision position mechanisms permitting the accurate traversing in any direction in space. The test air flow rate was measured with calibrated …

Free Convection Boundary Layer Heat Transfer Analysis Of Isothermal Horizontal Square Plates, Konstantinos E. Tsouras

Theses

The theoretical study presented here examines free convective boundary layer flow and heat transfer over isothermal horizontal square plates.

The boundary layer equations subjected to the appropriate boundary conditions were solved by using Von Karman's approximate integral technique. The analysis was performed by considering an axisymmetric boundary layer because the analyzed phenomenon is three-dimensional in nature. Three-dimensional boundary layer analysis, however, is complicated and the work involved is rather tedious. Consequently, the axisymmetric boundary layer offers a useful alternative. Unfortunately, it was found that this type of analysis is applicable to the case of an upward-facing heated plate only; for …

Experimental Investigation Of Heat Transfer From An Array Of Air Jets Impinging Normally On A Flat Plate, Deniz Metin Kaya

Theses

Heat transfer from submerged, turbulent, circular and axisymmetric array of air jets impinging normally on a hot flat plate has been studied experimentally. Jets issued from an array of five nozzles 6.35 mm (0.25 in.) in diameter. The ratio of nozzle center-to-center distance to the nozzle diameter, given by C_n/D, of 2, 3 and 4 were considered. Nozzle exit Reynolds Numbers 14000, 26000 and 54000 were employed. The ratio of distance between the test plate and nozzle diameter (Z_n/D) varied from 5 to 15.

Two experimental arrangements, one with a segmented brass plate heated by a …

Optimal Design Of A Dynamic Structural System, Azhar Imtiyaz Khan

Theses

This Thesis studies optimal design of structural dynamics, based on the State Space approach which uses the Design Sensitivity Analysis and the Adjoint Variable Technique. As a numerical example, optimal design of a multistory structure subjected to a dynamic response, similar to that of an earthquake, is chosen. The equations of motion of the structural system are constructed using the Finite Element method, treating the cross-sectional area of each story as a design variable. To solve the equations a package program DE is used. A program is developed based on the State Space Algorithm and the cost function, constraints and …

Test 1569: Versatile 876 Manual 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 1566: Versatile 836 Manual Diesel 15-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 1570: Versatile 936 Manual 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 1568: Versatile 856 Powershift 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 1565: Versatile 276 Diesel Hydrostatic, 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 1562: Hesston 70-90 Fiat 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 1563: Hesston 80-90 Fiat 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 1564: Hesston 130-90dt And 130-90 Turbo 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 1561: Hesston 70-66dt And 70-66 Fiat 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 1560: Hesston 55-66 Fiat 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 …