Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Electrical and Computer Engineering (2072)
- Mechanical Engineering (1617)
- Aerospace Engineering (1477)
- Civil and Environmental Engineering (1212)
- Operations Research, Systems Engineering and Industrial Engineering (1014)
-
- Physical Sciences and Mathematics (941)
- Computer Engineering (545)
- Electrical and Electronics (482)
- Biomedical Engineering and Bioengineering (466)
- Chemical Engineering (458)
- Operational Research (429)
- Materials Science and Engineering (405)
- Computer Sciences (404)
- Signal Processing (353)
- Aviation (301)
- Civil Engineering (291)
- Systems Engineering (208)
- Environmental Engineering (206)
- Business (205)
- Physics (203)
- Navigation, Guidance, Control and Dynamics (201)
- Construction Engineering and Management (187)
- Other Operations Research, Systems Engineering and Industrial Engineering (169)
- Aerodynamics and Fluid Mechanics (168)
- Digital Communications and Networking (166)
- Engineering Science and Materials (165)
- Nuclear Engineering (155)
- Space Vehicles (148)
- Electromagnetics and Photonics (133)
- Institution
-
- Air Force Institute of Technology (4099)
- Brigham Young University (2177)
- University of South Carolina (898)
- University of Wisconsin Milwaukee (641)
- Virginia Commonwealth University (615)
-
- Florida Institute of Technology (578)
- Rowan University (287)
- University of Texas Rio Grande Valley (255)
- Mississippi State University (149)
- American University in Cairo (111)
- University for Business and Technology in Kosovo (110)
- University of North Dakota (15)
- Columbus State University (8)
- Illinois State University (8)
- City University of New York (CUNY) (2)
- Pepperdine University (1)
- Keyword
-
- #antcenter (292)
- Optimization (108)
- FPGA (88)
- Machine learning (87)
- Modeling (69)
-
- Simulation (68)
- Applied sciences (63)
- UAV (63)
- Global Positioning System (59)
- Computer vision (57)
- Additive manufacturing (53)
- Decision making (51)
- Microelectromechanical systems (50)
- Algorithms (49)
- Machine Learning (49)
- Remote sensing (49)
- Image processing (48)
- Drone aircraft (47)
- Engineering, Chemical Engineering (44)
- Synthetic aperture radar (42)
- Target acquisition (42)
- Compliant mechanisms (41)
- Engineering, Mechanical Engineering (41)
- Finite element analysis (41)
- Kalman filtering (40)
- Reliability (40)
- Signal processing (40)
- CFD (39)
- Combustion (39)
- Deep learning (38)
- Publication Year
Articles 9901 - 9930 of 9954
Full-Text Articles in Engineering
An Experimental Investigation Of Proportional Braking, Rudolf Limpert
An Experimental Investigation Of Proportional Braking, Rudolf Limpert
Theses and Dissertations
In recent years automobile safety has become more and more important.The braking device contributes largely to the problem of safe driving.
Development Of A Generalized Structural Dynamics Computer Program, Val E. Simmons
Development Of A Generalized Structural Dynamics Computer Program, Val E. Simmons
Theses and Dissertations
The purpose of this thesis was the development of a generalized structural-dynamics computer program to calculate the response of multi-degree-of-freedom systems. The user of this computer program, having a limited background in matrix algebra and vibrational analysis, can gain numerical and graphical information concerning the dynamic response of multi-degree-of-freedom structures. The user, with a minimal amount of FORTRAN experience, will find this thesis ideally suited for his needs.
Design And Operation Of Equipment For Impact Test Of A Hydraulic Cushion, Harshadbhai R. Patel
Design And Operation Of Equipment For Impact Test Of A Hydraulic Cushion, Harshadbhai R. Patel
Theses and Dissertations
In recent years, experiments have been carried out to evaluate the performance of water-filled cushion cells used to attenuate energy of automobile collisions. The water-filled cushion cell is a vinyl plastic cylinder of 6 inches nominal outside diameter, 1/4 inch wall thickness, 40 inches length, closed at the bottom by a cast-in-place vinyl plug and partially closed by a bolted-in vinyl diaphragm at the upper end. These cells are designed to be installed in the path of a crashing automobile to absorb and dissipate the kinetic energy of impact. Properly designed cushions could be used as one means of saving …
Design Of An Automatically Controlled-Feed, Constant Current Arc Generating Machine For Consumable Electrodes, Dhansukh J. Chauhan
Design Of An Automatically Controlled-Feed, Constant Current Arc Generating Machine For Consumable Electrodes, Dhansukh J. Chauhan
Theses and Dissertations
Good welding research requires accurate control of the variables involved,to achieve consistent results. The variables involved in arc welding are of the dependent and independent type. Control of the independent variables such as arc current, arc voltage and welding velocity is necessary to control the independent variables such as penetration, electrode consumption rate, etc. The purpose of this thesis was to design, develop and test an automatic welding machine which controlled the above variables within the limits required for welding research.
Developing Turbulent Flow In An Annulus, Dwight H. Kelly
Developing Turbulent Flow In An Annulus, Dwight H. Kelly
Theses and Dissertations
Turbulent flows are encountered in nearly every case where fluid motion is involved. Since turbulent flow through relatively short annular sections occurs frequently in practical applications, e.g., flow through heat exchangers, axial flow turbomachinery and jet aircraft engines, there is a need for detailed information on this subject.
The Enrichment Of Hydro-Carbon Fuel By Aluminum Powder In An Open-Hearth Furnace, Rick Sung-Tao Lee
The Enrichment Of Hydro-Carbon Fuel By Aluminum Powder In An Open-Hearth Furnace, Rick Sung-Tao Lee
Theses and Dissertations
The objective of this thesis was to study theoretically the enrichment of hydrocarbon fuels with aluminum powder for an open-hearth furnace.
Study Of Tensile Stress Versus Strain Characteristics Of Vinyl Plastic At Various Temperatures As A Function Of Strain Rate, Jitendra T. Parikh
Study Of Tensile Stress Versus Strain Characteristics Of Vinyl Plastic At Various Temperatures As A Function Of Strain Rate, Jitendra T. Parikh
Theses and Dissertations
The purpose of this thesis was to study the tensile-stress versus strain characteristics of vinyl plastic at various temperatures as a function of strain rate.
A Similarity Model For Flow In A Turbulent Boundary Layer, Earl Clark Lemmon
A Similarity Model For Flow In A Turbulent Boundary Layer, Earl Clark Lemmon
Theses and Dissertations
One of the basic goals in engineering is to generate models which will provide a means for analytically predicting observed phenomenon. Such a model is often modified several times to obtain better results. The purpose of this study was to generate a model for an equilibrium turbulent boundary layer for steady flow over a flat plate and compare the results obtained by using the model with experimental data. Part of the objective was to also suggest ways in which the model could be modified to obtain better results.
Investigation Of Implicit Methods For Solution Of The Fourier Equation, Kjell Steinar Gundersen
Investigation Of Implicit Methods For Solution Of The Fourier Equation, Kjell Steinar Gundersen
Theses and Dissertations
In recent years there has been an extensive development of finite difference techniques for solution of the transient heat conduction equation due to the availability of high-speed digital computers. It is the purpose of this paper to investigate and compare several implicit methods for the solution of the Fourier equation with regards to truncation error, round-off error and computer time which probably are among the most important factors to be considered in choosing a method.
Transition From Laminar To Turbulent Flow For Dilute Guar Gum Solutions, Martin L. Palmer
Transition From Laminar To Turbulent Flow For Dilute Guar Gum Solutions, Martin L. Palmer
Theses and Dissertations
Solutions of many natural and synthetic polymers have been found to reduce turbulent friction losses in flow through pipes. The basic mechanism causing these reductions is not entirely understood although two general theories have been advanced.
Electric Arc Welding Of Gray Cast Iron Without Preheating, Ramon Prestwich
Electric Arc Welding Of Gray Cast Iron Without Preheating, Ramon Prestwich
Theses and Dissertations
Cast irons are iron-carbon alloys with greater than 1.7% carbon. Although white, malleable and ductile cast irons are used extensively for casting work, this study is concerned with only the gray cast irons.
An Experimental Study Of The Effects Of Welding On Cold-Worked And On Heat-Treated Steels As They Correlate To Tempering And Jominy Data, Kiran Patwari
Theses and Dissertations
Since Bernandos of Russia in 1887 applied an electric arc to weld metals, welding has become an important method of fabrication in industry. The ever increasing use of welding on a still widening variety of materials demands m ore and m ore understanding of the basic mechanisms of welding.
Design Of An Apparatus For Study Of Stress Versus Strain As A Function Of Strain Rate In Plastics, Ashok B. Choksi
Design Of An Apparatus For Study Of Stress Versus Strain As A Function Of Strain Rate In Plastics, Ashok B. Choksi
Theses and Dissertations
As new materials are developed, it is essential to study their mechanical properties experimentally. It is easy to find properties like ultimate strength, yield strength, hardness, etc., using standard techniques. It is not possible to observe the tensile behavior of materials at high strain rates using standard equipment. Plastics are often subjected to tensile loads at various rates of loading, such as when they are used to absorb impact.
A Study Of Thermal Responses Of A Body Of Complex Geometry To A Moving Heat Source, J. Norman Smith
A Study Of Thermal Responses Of A Body Of Complex Geometry To A Moving Heat Source, J. Norman Smith
Theses and Dissertations
The effect of the fusion welding process upon the metals being welded is a matter of great interest and has been the subject of much investigation, both theoretical and experimental. The properties of metals are determined by the structure of their crystals (within limits for any given metal), and the crystalline structure is determined by heating and cooling rates. Thus the knowledge of temperatures, and heating and cooling rates, becomes the key to understanding these effects of heating. Since the greatest part of fusion welding is done using a gas torch or an electric arc, the necessary theoretical study is …
A Study Of Frictional Drag Force Reduction On A Flat Plate By The Injection Of A Dilute Solution Of Guar Gum Into The Boundary Layer, Neil Henry Clay
A Study Of Frictional Drag Force Reduction On A Flat Plate By The Injection Of A Dilute Solution Of Guar Gum Into The Boundary Layer, Neil Henry Clay
Theses and Dissertations
The study of frictional drag force reduction has been the subject of much research for many years. One of the significant developments in the field of frictional drag force reduction has been the discovery of the effectiveness of dilute polymer solutions in reducing drag. By using dilute high-polymer solutions frictional drag forces in pipe flow have been reduced by as much as 70 per cent.
Model Study And Analysis Of The Flow Elements Of A Recirculation Mixing System, Albert Warren Berg
Model Study And Analysis Of The Flow Elements Of A Recirculation Mixing System, Albert Warren Berg
Theses and Dissertations
The term water clarifier as used in this text refers to a versatile water treatment unit which combines flocculation and coagulation, clarification and positive sludge removal in a single tank. Water clarifiers are very compact units which are being used in municipal and industrial water treatment for the removal of turbidity, algae, color, iron and silica; lime or lime-soda softening; magnesium precipitation; brine clarification; and waste water clarification with or without chemicals. Water clarifier units have found wide use in the sanitary field, providing high removals in the pre-treatment of sewage and in secondary sewage treatment through addition of coagulants.
Correlation Of Weldment Hardness Profiles In Steels With Jominy End-Quench Data, Deepak Panjabi
Correlation Of Weldment Hardness Profiles In Steels With Jominy End-Quench Data, Deepak Panjabi
Theses and Dissertations
Welding occupies an important place as a major metal fabricating process and steel is the backbone of many an industry. Therefore it is of paramount importance to know the effect of welding on steel.
The Design Of A One-Man Terramechanism, Brent Charles Fryer
The Design Of A One-Man Terramechanism, Brent Charles Fryer
Theses and Dissertations
With the rebirth of special warfare in the last few years, the role of the individual soldier and of squad-sized units has been re-emphasized. Most guerilla-type fighting has been, is presently, and will most likely continue occurring in remote areas of the world. The terrain encountered may be tropical grasslands and canopy areas, or rugged mountains, inland waterways, swamps, mud flats and rice paddies. Other adverse terrain conditions are frequently encountered and must be crossed to accomplish the mission of the unit.
The Development Of Turbulent Flow In The Inlet Region Of Smooth Pipe, Forrest C. Smith
The Development Of Turbulent Flow In The Inlet Region Of Smooth Pipe, Forrest C. Smith
Theses and Dissertations
Turbulent flows are encountered in nearly every case where fluid motion is involved. Turbulent flow in pipes is of great practical interest, and the problem of flow in the entry region is of special importance since the great majority of applications are in the realm of developing flow.
Geographical Characteristics Of Early Mormon Settlements, John Haws Baum
Geographical Characteristics Of Early Mormon Settlements, John Haws Baum
Theses and Dissertations
Considerable literature has been written about the Mormons and their settlement of the lands within the Great Basin; yet no one has produced a systematic study which analyzes the following geographical factors: What pattern of land occupancy was actually used by these early pioneers? Which physical characteristics determined the selection of a site for the Mormon village? What type of city survey pattern was instigated as towns were established along the eastern margin of the Great Basin? What was the relationship between the forts and the settlements in their lay-out patterns? As these questions were systematically analyzed new findings were …
Drag Coefficients For Magnetically Accelerated Spheres, Jann-Wuu Liang
Drag Coefficients For Magnetically Accelerated Spheres, Jann-Wuu Liang
Theses and Dissertations
The objective of this study was to determine the correlation of the drag coefficient of an accelerating sphere in the liquid medium over a range of Reynolds number from 0.1 to 100, 000. A magnetic accelerator was used to obtain an acceleration for the sphere, the data was recorded using a photograph and a digital computer was used to reduce the data.
Preliminary Design Of A Hydraulic Vibration Machine With Variable Amplitude And Frequency, Using Multistage Amplification And Feedback Control, Melvin Joseph Merrell
Preliminary Design Of A Hydraulic Vibration Machine With Variable Amplitude And Frequency, Using Multistage Amplification And Feedback Control, Melvin Joseph Merrell
Theses and Dissertations
Essentially there are three types of vibration machines mechanical, electrodynamic, and electrohydraulic (hydraulic). Each of these machines has characteristics which make it suitable for particular areas of use.
Drag Forces On Magnetically Accelerated Particles, Darrell Winterton Walker
Drag Forces On Magnetically Accelerated Particles, Darrell Winterton Walker
Theses and Dissertations
The object of this investigation was to determine the effect of acceleration on the drag of spheres as it differs from the steady state case. Steady state drag applies to the force acting on a single sphere moving at constant velocity through an infinite, continuous, incompressible, turbulence free fluid. Extensive experimentation has quite thoroughly documented the steady state drag characteristics of spheres. A dimensionless parameter associated with the drag force is sometimes used to correlate drag characteristics.
Turbulent Flow In The Entry Region, Chin-Hsiu Li
Turbulent Flow In The Entry Region, Chin-Hsiu Li
Theses and Dissertations
When entering into the subject of turbulent flow, it is essential to understand that the kind of flow with which we deal belongs to a particular class known as shear flow. These types of flow comprise flow fields in which relative velocities have been induced by shear stresses rather than by the action of pressure forces. In pipe flow, when the fluid enters through the well-rounded bell from a reservoir or from the calm open air, a uniform velocity distribution occurs at the pipe entrance. Immediately down stream from the entrance of the pipe, the flow is structured with a …
The Investigation And Design Of A Powered, Single-Man Parawing Aircraft, Calvin J. Merrell
The Investigation And Design Of A Powered, Single-Man Parawing Aircraft, Calvin J. Merrell
Theses and Dissertations
During the last few years there has been an increasing interest in a high-lift wing configuration known as the flex-wing, or parawing. The parawing consists basically of a flexible membrane such as cloth, attached to two leading edges (or booms) and a keel as shown in Figure 1. At angles of attack (��) greater than the billowing angle (��). the air impinges on the under side of the membrane and forces it into a double-arch shape at each cross-section. When straight leading edges are used, each arch approximates the shape of a conical section. A cylindrical section is obtained by …
Heat Transfer In Shock Boundary Layer Interaction Regions, Rex W. Shumway
Heat Transfer In Shock Boundary Layer Interaction Regions, Rex W. Shumway
Theses and Dissertations
The interest in aerodynamic heating problems has been increasing rapidly in the last decade. This interest is no longer concentrated on the heating of simple shapes for which adequate heat transfer theory has been developed« Because of the increasing Mach number ranges of aircraft, the need for information on the aerodynamic heating of various components has become imperative. Only when the magnitude of the problem has been exposed can the design for reducing the severity of local heating be optimized. Definition of these problems is of interest, not only because of the flow phenomena, but because of possible design limitations …
The Vibration Response Of Laminated Orthotropic Plates, Max E. Waddoups Jr.
The Vibration Response Of Laminated Orthotropic Plates, Max E. Waddoups Jr.
Theses and Dissertations
The behavior of anisotropic materials has been the object of much recent research® The high strength to weight ratio needed by aerospace structures has necessitated the use of exotic, composite materials which generally exhibit anisotropic behavior® These materials cannot be fully utilized unless analytical techniques are used which take maximum advantage of their anisotropic behavior.
Liquid Particle Interaction With A Normal Shock Wave, Victor George Forsnes
Liquid Particle Interaction With A Normal Shock Wave, Victor George Forsnes
Theses and Dissertations
The atomization of a liquid by an air stream has been an item of much concern in the past, and there have been numerous experimental studies of the process made in an effort to correlate liquid and air- stream physical properties into a general model which will predict the degree of and the time required for atomization for a given physical situation. The breakup of liquid drops, a major portion of the atomization process, finds application in the field of meteorology, where the formation, breakup, and shape of raindrops is an item of much concern; in the field of internal …
Residual Stress Distribution Changes During Dynamic Unidirectional Tensile Loading, Henry Swan Todd
Residual Stress Distribution Changes During Dynamic Unidirectional Tensile Loading, Henry Swan Todd
Theses and Dissertations
In recent years there has been much engineering effort channeled toward obtaining higher strength, lower weight and cost product designs. In pursuit of this goal some carefully designed and tested parts have catastrophically failed after a long history of repeated successful service, even though the load at the time of failure was no higher than the part had repeatedly carried previously. These mechanical failures are commonly classified as fatigue failures.
Residual Stresses And The Bauschinger Effect, Raymond M. Huebner
Residual Stresses And The Bauschinger Effect, Raymond M. Huebner
Theses and Dissertations
Within the last ten years there has been much interest in the field of elasto-plastic behavior of engineering materials. Hie recent popularity of the low-cost light-weight plastically designed structures has added a great deal of impetus to this interest. This thesis deals with one of the aspects of elasto-plastic behavior, namely, the distribution of the residual stresses in a simple member which has been plastically deformed in tension and/or compression,. In particular, an attempt has been made to relate these residual stresses to the well-known but little understood Bauschinger effect.