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- Electrical and Computer Engineering Faculty Research & Creative Works (10)
- CCFSS Library (1939 - present) (7)
- Materials Science and Engineering Faculty Research & Creative Works (6)
- Mechanical and Aerospace Engineering Faculty Research & Creative Works (2)
- American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present) (1)
Articles 1 - 28 of 28
Full-Text Articles in Engineering
Laterally Unsupported Purlins Subjected To Uplift, Roger A. Laboube
Laterally Unsupported Purlins Subjected To Uplift, Roger A. Laboube
CCFSS Library (1939 - present)
INTRODUCTION A research study, conducted at Cornell University, provided a theoretical method for evaluating the state of stress for both C- and Z- purlins subjected to wind uplift loading. According to the Cornell analytical method, a Z-purlin has more load carrying capability than a similar C-purlin. Although experimental verification was provided, questions were raised, within the Metal Building Industry, regarding the strength of the C-versus the Z-section. The purpose of the work discussed herein was to develop information regarding the behavior of C- and Z-sections having identical cross-section dimensions. A brief description of the test program, along with a comparison …
Testing Of Steel Roof Deck Construction, Wei-Wen Yu, Lan-Cheng Pan, S. H. Lin
Testing Of Steel Roof Deck Construction, Wei-Wen Yu, Lan-Cheng Pan, S. H. Lin
CCFSS Library (1939 - present)
INTRODUCTION In recent years, insulated steel roof deck construction has been widely used in industrial and commercial buildings. The use of roof assembly consisting of 3-in. deep, 22-gage, steel deck is being considered by Rooftex, Inc. of Houston, Texas, for Class 1-60 and Class 1-90 assemblies. At the request of Rooftex, two types of tests were conducted at the University of Missouri-Rolla in July 1983. These tests, which consisted of physical tests of steel roof decks and uplift pressure tests of insulated steel roof deck construction, were conducted to obtain the"necessary data for the approval of the Factory Mutual Research …
The Effects Of Certain Impurities And Their Interactions On Zinc Electrowinning, Donald R. Fosnacht, Thomas J. O'Keefe
The Effects Of Certain Impurities And Their Interactions On Zinc Electrowinning, Donald R. Fosnacht, Thomas J. O'Keefe
Materials Science and Engineering Faculty Research & Creative Works
The effects of germanium, antimony, arsenic, cobalt, glue, and free acid concentration were studied on both commercial and synthetic electrolytes. The effects of a single factor and the combined effects of multiple factors were elucidated. The temperature, zinc concentration, and current density were varied for some of the tests. It was found that the acid content was the most critical factor when impurity levels were at normal plant solution concentrations. The ranges where the effect of the impurity became apparent were: greater than 20 ppb (parts per billion) for antimony; 40 ppb for germanium; 120 ppb for arsenic; and 7 …
Limiting Efficiencies For Multiple Energy-Gap Quantum Devices, Cheng-Hsiao Wu, Richard M. Williams
Limiting Efficiencies For Multiple Energy-Gap Quantum Devices, Cheng-Hsiao Wu, Richard M. Williams
Electrical and Computer Engineering Faculty Research & Creative Works
We have used a thermodynamic model to calculate theoretical limiting efficiencies for simple and multiple gap solar cells. The limiting efficiency is 26% for a simple solar cell of hydrogenated amorphous silicon, operating at one Sun sensitivity. For a multiple gap cell made from hydrogenated amorphous silicon, together with a second cell, made from a material with lower band gap, it is 38%. The optimum band gap for the second material is 1.0 eV.
Screening Design Test For Cobalt Cementation From Zinc Electrolyte, Mark S. Blaser, Thomas J. O'Keefe
Screening Design Test For Cobalt Cementation From Zinc Electrolyte, Mark S. Blaser, Thomas J. O'Keefe
Materials Science and Engineering Faculty Research & Creative Works
No abstract provided.
Testing Of Steel Roof Deck Construction, S. Sucharit, Lan-Cheng Pan
Testing Of Steel Roof Deck Construction, S. Sucharit, Lan-Cheng Pan
CCFSS Library (1939 - present)
No abstract provided.
Control Of Oxygen And Carbon Related Crystal Defects In Silicon Processing, P. D. Ownby, P. E. Grayson
Control Of Oxygen And Carbon Related Crystal Defects In Silicon Processing, P. D. Ownby, P. E. Grayson
Materials Science and Engineering Faculty Research & Creative Works
In the production of silicon articles at an elevated temperature, a stream comprising a controlled mixture of an oxygen-containing first gas and a second gas is admitted to the processing chamber. The first gas is one which partially dissociates under the conditions in the chamber to form both oxygen and the second gas. The second gas is one which is not harmful to silicon at the conditions in the chamber. Substantially equilibrium conditions are established in the chamber so that the dissociation of the first gas to oxygen occurs reversibly. The partial pressure of oxygen (PO2) is sensed …
Design Of Automotive Structural Components Using High Strength Sheet Steels-Strength Of Beam Webs, Chiravut Santaputra, Wei-Wen Yu
Design Of Automotive Structural Components Using High Strength Sheet Steels-Strength Of Beam Webs, Chiravut Santaputra, Wei-Wen Yu
CCFSS Library (1939 - present)
I. INTRODUCTION In February 1981, the "Guide for Preliminary Design of Sheet Steel Automotive Structural Components" was issued by American Iron and Steel Institute (AISI) for assisting automotive structural designers to achieve weight reduction through the efficient utilization of carbon and high strength steels. 1 These design recommendations were based primarily on the 1968 Edition of the AISI "Specification for the Design of Cold-Formed Steel Structural Hembers,,2 but contained the following major differences with regard to the AISI Specification, which was written 'for the design of buildings: 1,4 a. The design expressions presented in the Guide are based on an …
Design Of Automotive Structural Components Using High Strength Sheet Steels Preliminary Study Of Members Consisting Of Flat And Curved Elements, Wei-Wen Yu, M. Brad Parks
Design Of Automotive Structural Components Using High Strength Sheet Steels Preliminary Study Of Members Consisting Of Flat And Curved Elements, Wei-Wen Yu, M. Brad Parks
CCFSS Library (1939 - present)
No abstract provided.
Saint-Venant's Principle In Linear Elasticity With Microstructure, R. C. Batra
Saint-Venant's Principle In Linear Elasticity With Microstructure, R. C. Batra
Mechanical and Aerospace Engineering Faculty Research & Creative Works
Toupin's version of the Saint-Venant principle in linear elasticity is generalized to the case of linear elasticity with microstructure. That is, it is shown that, for a straight prismatic bar made of an isotropic linear elastic material with microstructure and loaded by a self-equilibrated force system at one end only, the strain energy stored in the portion of the bar which is beyond a distance s from the loaded end decreases exponentially with the distance s. © 1983 Martinus Nijhoff Publishers.
The Influence Of Local Buckling On The Structural Behavior Of Singly-Symmetric Cold-Formed Steel Columns, Gale P. Mulligan, Teoman Peköz
The Influence Of Local Buckling On The Structural Behavior Of Singly-Symmetric Cold-Formed Steel Columns, Gale P. Mulligan, Teoman Peköz
CCFSS Library (1939 - present)
INTRODUCTION Cold-formed steel sections are formed from thin steel sheets, of typical thickness 0.015-0.25 inches, by either production cold roll forming or by specialized press braking. As a result, it is possible to produce economically a variety of cross-sectional shapes, which have high strength-to-weight ratios. Some structural applications include primary and secondary load-carrying framing members, such as columns, purlins and wall studs; and shear diaphragms, such as floor and roof decks and wall panels (Yu [1973]). Their design is governed by the American Iron and Steel Institute (AISI) Specification [1980], which is unique because of its generality, e.g., no specific …
Cold-Formed Steel Design Manual, American Iron And Steel Institute
Cold-Formed Steel Design Manual, American Iron And Steel Institute
American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)
No abstract provided.
Bibliography Of Power Systems Operator Training Resources, Max Darwin Anderson
Bibliography Of Power Systems Operator Training Resources, Max Darwin Anderson
Electrical and Computer Engineering Faculty Research & Creative Works
This paper attempts to provide a current listing of training courses, programs, and resource materials for Power System Operator/Dispatcher training. The training resources are subdivided into five (5) categories: I. Dispatcher training courses and facilities developed by the Suppliers/Manufacturers II. University Short Courses III. Conference Publications IV. Reference Books V. Correspondence Courses A brief description of the offerings of each of Suppliers/Manufacturers is included. Copyright © 1982 by The Institute of Electrical and Electronics Engineers, Inc.
Improved Wavenumber Resolution For Small Arrays, Richard E. Dubroff
Improved Wavenumber Resolution For Small Arrays, Richard E. Dubroff
Electrical and Computer Engineering Faculty Research & Creative Works
The Objective of the Method Described is to Compute the Fourier Transform of a Function of Space and Time with a Significant Improvement in the Resolution of Spatial Frequencies, particularly in the Case of Small Arrays for Which the Size of the Array is on the Order of One Wavelength (Or less). This Improvement is Initially Developed by Considering the Conversion of Spatial Frequency into Temporal Frequency through the Oscillatory Motion of a Single Receiver. a More Practical Scheme is Next Presented in Which the Oscillatory Motion is Created Synthetically by the Appropriate Sequential Sampling of Individual Elements in a …
Preface, Delbert E. Day, Günther H. Frischat
Preface, Delbert E. Day, Günther H. Frischat
Materials Science and Engineering Faculty Research & Creative Works
No abstract provided.
Design Of Automotive Structural Components Using High Strength Sheet Steels, Wei-Wen Yu, Chiravut Santaputra, M. Brad Parks
Design Of Automotive Structural Components Using High Strength Sheet Steels, Wei-Wen Yu, Chiravut Santaputra, M. Brad Parks
CCFSS Library (1939 - present)
INTRODUCTION In recent years, automobile manufacturers have introduced new lines of lighter vehicles for the purpose of achieving fuel economy. To construct such vehicles, formable and weldable, high strength, sheet steels with yield points ranging up to 140 ksi have been used for parts and structural components. 1.1-1.7 Because various types of newer high strength sheet steels are now available for engineers to reduce car weight and because these steels permit the use of existing production equipment with virtually no change in techniques or production rates, the design criteria for efficient and economical use of these high strength steels in …
Linear Inversion Method To Obtain Aerosol Size Distributions From Measurements With A Differential Mobility Analyzer, Donald E. Hagen, Darryl J. Alofs
Linear Inversion Method To Obtain Aerosol Size Distributions From Measurements With A Differential Mobility Analyzer, Donald E. Hagen, Darryl J. Alofs
Mechanical and Aerospace Engineering Faculty Research & Creative Works
The Use of a Differential Mobility Analyzer to Perform Aerosol Size Spectrum Measurements Requires an Inversion Method to Go from the Measured Sensor Responses to the Desired Size Spectrum Information. Here We Present a Linear Inversion Method that Can Be Run on a Microcomputer or a Small Minicomputer. It Does Not Use Some of the Approximations Made in the Techniques Currently Available and Hence Gives Better Inversion Accuracy. the Method Shows Good Immunity to Both Random and Systematic Experimental Error. It is Applied to Numerous Test Case Aerosols. © 1983 Elsevier Science Publishing Co., Inc.
Estimation Of Ocean Wave Wavenumber And Propagation Direction From Limited Synthetic Aperture Radar Data., Gordon E. Carlson
Estimation Of Ocean Wave Wavenumber And Propagation Direction From Limited Synthetic Aperture Radar Data., Gordon E. Carlson
Electrical and Computer Engineering Faculty Research & Creative Works
A method for estimating wavenumber and propagation direction for the dominant wave component in an ocean wave field from a few scans of synthetic aperture radar data is described and analyzed. The use of just a few radar scans rather than a complete image reduces data storage requirements significantly. The analysis shown uses actual synthetic aperture radar data and provides parameter tradeoffs and statistical performance results. While reasonable estimates of wavenumber and propagation direction are achieved in some cases, the estimates are not sufficiently consistent to be satisfactory over a wide range of cases. The primary problem is one of …
Bibliography Of Power Systems Operator Training Resources Ieee Committee Report Prepared By The Pes Working Group On Operator Training (Wg78-4), Max Darwin Anderson
Bibliography Of Power Systems Operator Training Resources Ieee Committee Report Prepared By The Pes Working Group On Operator Training (Wg78-4), Max Darwin Anderson
Electrical and Computer Engineering Faculty Research & Creative Works
This paper provides a current listing of training courses, programs, and resource materials for Power System Operator/ Dispatcher training. The training resources are subdivided into five (5) categories: I. Dispatcher training courses and facilities developed by the Suppliers/Manufacturers II. University Short Courses III. Conference Publications IV. Reference Books V. Correspondence Courses A brief description of the offerings of each of the Suppliers/ Manufacturers is included. Copyright © 1983 by The Institute of Electrical and Electronics Engineers, Inc.
The Application Of Bond Graphs To Electrical Machinery And Power Engineering, K. Sirivadhna, Earl F. Richards, Max Darwin Anderson
The Application Of Bond Graphs To Electrical Machinery And Power Engineering, K. Sirivadhna, Earl F. Richards, Max Darwin Anderson
Electrical and Computer Engineering Faculty Research & Creative Works
No abstract provided.
Considerations In Developing And Utilizing Operator Training Simulators, T. E. Dyliacco, M. K. Enns, J. D. Schoeffler, J. J. Quada, D. L. Rosa, C. W. Jurkoshek, Max Darwin Anderson
Considerations In Developing And Utilizing Operator Training Simulators, T. E. Dyliacco, M. K. Enns, J. D. Schoeffler, J. J. Quada, D. L. Rosa, C. W. Jurkoshek, Max Darwin Anderson
Electrical and Computer Engineering Faculty Research & Creative Works
Effective electric system operation depends on strengthening the relationship between the system operator and the electrical system with its associated control system. This relationship can be developed through a training medium which increases the operator's knowledge of the behavior of the power system under various operating conditions and contingencies, and its response to control actions. An Operator Training Simulator (OTS), which simulates the static and dynamic responses of the operator's power system and his control system, can accomplish these training objectives. The concepts developed in this paper are based on the work of the project team through funding by the …
The Application Of Bond Graphs To Electrical Machinery And Power Engineering, K. Sirivadhna, Earl F. Richards, Max Darwin Anderson
The Application Of Bond Graphs To Electrical Machinery And Power Engineering, K. Sirivadhna, Earl F. Richards, Max Darwin Anderson
Electrical and Computer Engineering Faculty Research & Creative Works
The bond graph technique, which has been related almost entirely to the field of mechanics, is a modeling procedure where emphasis is placed on the flow of power and energy in a system. Through specific digital simulation programs such as ENPORT IV and V and THTSIM the state space representation, associated output equations and system dynamic response are directly obtainable from the bond graphs. This approach has a great advantage where a complex system is composed of electrical, mechanical, thermal, hydraulic or pneumatic subsystems, such as would exist, for example; in a boiler, turbine, generator exciter system together with its …
Analysis Of The Isolated Induction Generator, L. Ouazenne, George Mcpherson
Analysis Of The Isolated Induction Generator, L. Ouazenne, George Mcpherson
Electrical and Computer Engineering Faculty Research & Creative Works
No abstract provided.
Line-Adaptive Hybrid Coding Of Images, Tai On Tam, John A. Stuller
Line-Adaptive Hybrid Coding Of Images, Tai On Tam, John A. Stuller
Electrical and Computer Engineering Faculty Research & Creative Works
This Paper Describes Novel Adaptation Strategy for Hybrid Transform/DPCM Image Coders. This Strategy Has Yielded a 2–8 DB Increase in Signal-To-Noise Ratio in the Transmission of a Head and Shoulders Image at Bit Rates of 1–4 Bits Per Pel and One-Dimensional Transform Block Sizes of 2–16. © 1983 IEEE
Energy Storage Capacity Of Reversible Liquid‐Phase Diels Alder Reaction Between Maleic Anhydride And 2‐Methyl Furan, B. G. Sparks, Bruce E. Poling
Energy Storage Capacity Of Reversible Liquid‐Phase Diels Alder Reaction Between Maleic Anhydride And 2‐Methyl Furan, B. G. Sparks, Bruce E. Poling
Chemical and Biochemical Engineering Faculty Research & Creative Works
Calorimetry was used to determine the heat of reaction and equilibrium constant at 318 K for the reaction between maleic anhydride (A) and 2‐methyl furan (B). The values were −60 kJ/gmol and 614 cm3/gmol, respectively. The motivation for this work was to find a single phase‐reacting system that could be used to store solar energy. Thus, the energy storage capacity was calculated for a mixture of A and B, both initially at 7 kmol/m3, in dioxane. The maximum apparent heat capacity of 7.37 J/cm3·K occurred at 334 K. This maximum value is 76% higher than the heat capacity of pure …
Repetitive Load Deformation Of Cohesionless Soil, Rodney Lentz
Repetitive Load Deformation Of Cohesionless Soil, Rodney Lentz
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
No abstract provided.
Twinning Pseudoelasticity In Intl, Manfred Wuttig, Lin Chun-Hung
Twinning Pseudoelasticity In Intl, Manfred Wuttig, Lin Chun-Hung
Materials Science and Engineering Faculty Research & Creative Works
Twin boundaries generally contribute significantly to the damping of a twinned crystal. In an In-19.1 at.% Tl single crystal the damping gives rise to auto modulation if the internal friction studies are performed in the 10 Hz frequency range, with a strain amplitude larger than 0.05 and at temperatures lower than 10°C. The frequency of the auto modulation is about 60 times slower than the frequency with which the reed type sample is driven. The auto modulation frequency has a maximum at -6 C and is characterized by an activation energy of 29 kJ/mol (7 kcal/mol). This maximum can be …
Comments On A Paper By Baik And Raj, Hollis P. Leighly
Comments On A Paper By Baik And Raj, Hollis P. Leighly
Materials Science and Engineering Faculty Research & Creative Works
No abstract provided.