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Investigation And Simulation Of The Planetary Combination Hybrid Electric Vehicle, Csaba Toth-Nagy
Investigation And Simulation Of The Planetary Combination Hybrid Electric Vehicle, Csaba Toth-Nagy
Graduate Theses, Dissertations, and Problem Reports
The purpose of this study was the detailed examination of a Planetary Combination Hybrid Electric Vehicle design (PC-Hybrid). The PC-Hybrid unites all the advantages of the existing hybrid electric vehicle powertrain concepts, such as series, parallel and combination, while eliminating the disadvantages of each.;The PC-Hybrid powertrain is built up of an internal combustion engine, and two electric motor/alternators connected together via a planetary gear set. Several different powertrain configuration layouts were investigated as possible setups of the PC-Hybrid and the two most promising ones were chosen for further investigation and simulation. A control strategy has been developed for the optimal …
Evaluation Of Opacity, Particulate Matter, And Carbon Monoxide From Heavy-Duty Diesel Transient Chassis Tests, Ronald Page Jarrett
Evaluation Of Opacity, Particulate Matter, And Carbon Monoxide From Heavy-Duty Diesel Transient Chassis Tests, Ronald Page Jarrett
Graduate Theses, Dissertations, and Problem Reports
Opacity and emission data were collected from heavy-duty diesel engines exercised through snap-acceleration tests and transient chassis dynamometer tests. Emission data were gathered using the West Virginia University (WVU) Transportable Heavy Duty Vehicle Emission Testing Laboratories (THDVETL) and opacity data were collected from two opacity meters; the Wager 650CP full flow opacity meter and the Bosch RT 100 partial flow opacimeter. Results showed that the Bosch peak opacity readings were consistently higher than the Wager peak opacity readings, and both meters showed little correlation with filter-captured particulate matter (PM). It was also observed that the snap-acceleration test did not identify …
Process Control Of Applied Laser System For Enhanced Glass Production, Liyun Zheng
Process Control Of Applied Laser System For Enhanced Glass Production, Liyun Zheng
Graduate Theses, Dissertations, and Problem Reports
Existing glass crack-off methods often result in considerable loss of glassware and require subsequent edge finishing that is labor intensive. The main objective of this dissertation is to contribute to the development of a laser-enhanced cutting and finishing method that will decrease waste and improve productivity in the manufacturing of handblown glass.;The main objectives of this dissertation were to perform modeling and simulation of the laser glass interaction, to contribute to the lab prototype machine construction, to participate in experiments to investigate the process parameters governing successful glass cutting, and to pursue the design and validation of controls for the …
Influence Of Fuel Sulfur Content On Emissions From Diesel Engines Equipped With Oxidation Catalysts, Jason Carter Evans
Influence Of Fuel Sulfur Content On Emissions From Diesel Engines Equipped With Oxidation Catalysts, Jason Carter Evans
Graduate Theses, Dissertations, and Problem Reports
Diesel oxidation catalysts (DOCs) are a viable exhaust aftertreatment alternative for alleviating regulated exhaust emissions of hydrocarbon (HC), carbon monoxide (CO), and particulate matter (PM) from diesel-fueled heavy-duty engines. This study was a part of the Diesel Emissions Control-Sulfur Effects (DECSE) program that was aimed at determining the impact of diesel fuel sulfur levels on diesel oxidation catalysts that were designed to lower brake-specific PM, HC, and CO emissions from on-highway trucks and buses in the 2002--2004 model years. The research focused on high-temperature DOCs installed on a Cummins ISM370 ESP engine, and low-temperature DOCs installed on a Navistar T444E …
Optimization Of A Roll Over Protective Structure (Rops) Using Nonlinear Finite Element Analysis, Adam Michael Gillispie
Optimization Of A Roll Over Protective Structure (Rops) Using Nonlinear Finite Element Analysis, Adam Michael Gillispie
Graduate Theses, Dissertations, and Problem Reports
The use of a conventional Roll Over Protective Structure CROPS) on farm tractors over the years has saved numerous lives and prevented countless injuries. By removing the ROPS, the tractor operators place themselves in unwarranted danger.;This led the National Institute for Occupational Safety and Health (NIOSH) and West Virginia University Mechanical and Aerospace Engineering to the development of a deployable ROPS, which could remain down to aid in required housing space for the tractor and prevent debris from striking the tractor operator while being driven.;This research effort focuses on the application of computer-aided design and analysis to structurally optimize the …
Computational Model Of Ductile Erosion By Single Particle Impact, Chandrakant Rai
Computational Model Of Ductile Erosion By Single Particle Impact, Chandrakant Rai
Graduate Theses, Dissertations, and Problem Reports
Erosion by solid particle impact is a common problem in many industrial applications. It results due to mechanical contact between the particle and the metal surface, which in turn result in potential material losses. Erosion of machine parts by the small solid particle entrained in liquid or gaseous working environment is a serious problem in many industrial applications. Numerous experiments have been conducted to obtain empirical relations for predicting material loss due to these impacts and to arrive at an appropriate material for a particular working environment. But with so many new materials being used for different applications, and operating …
Determining Organic Vapor Cartridge Breakthrough Characteristics Of Jp-8 During Aircraft Fuel Tank Entry Operations, Kevin W. Culp
Determining Organic Vapor Cartridge Breakthrough Characteristics Of Jp-8 During Aircraft Fuel Tank Entry Operations, Kevin W. Culp
Graduate Theses, Dissertations, and Problem Reports
This study assessed the service life of organic vapor cartridges exposed to jet Propulsion Type 8 fuel vapor. Two experiments were conducted that involved exposing 45 cartridges to three challenge concentrations (300, 600, and 1200 parts per million) of fuel vapor and two relative humidity levels (50 and 80 percent). The impact on service life of (1) high relative humidity conditions and (2) prior static exposure to fuel vapor were evaluated.;This study concluded that the 80 percent relative humidity test condition had a statistically significant effect on breakthrough time versus the 50 percent relative humidity condition, reducing service life by …
Mechatronics For Sophomore-Level Mechanical Engineering Students, David Thomas Morris
Mechatronics For Sophomore-Level Mechanical Engineering Students, David Thomas Morris
Graduate Theses, Dissertations, and Problem Reports
As mechanical product designs become more complex, integrating electromechanical components with embedded control circuitry, the need for engineering graduates with a diversified educational background in multidisciplinary applications has been recognized within many facets of industry. The focus of this research was to create a series of laboratory experiments and a capstone project based on a survey of literature from current educators that could be used to introduce sophomore-level mechanical engineering students to fundamentals in the field known as "mechatronics", which incorporates the traditional disciplines of mechanical, electrical and software engineering. The lab exercises utilize the Handy Board microcontroller from MIT …
Dynamic Analysis Of A Composite Moving Beam, Ganesh Chandrasekaran
Dynamic Analysis Of A Composite Moving Beam, Ganesh Chandrasekaran
Graduate Theses, Dissertations, and Problem Reports
In this thesis, an attempt is made at studying the dynamic characteristics of a composite-moving beam.;The model considered is an overhang beam on simple supports oscillating in the longitudinal direction. The lateral response of the beam is studied due to an initial lateral deflection. The beam is made-up of laminated composite materials. Both symmetric and unsymmetrical lay ups are considered. Since unsymmetrical lay ups introduce bending-axial coupling, axial deformation needs to be considered also. First Order Shear Deformation theory (FSDT) is used to formulate the problem since transverse shear deformations are important for composite beams. When reducing laminate plate theory …
Emissions And Operational Aspects Of Methanol As An Alternative Fuel In A Stationary Gas Turbine, Richard William Guiler
Emissions And Operational Aspects Of Methanol As An Alternative Fuel In A Stationary Gas Turbine, Richard William Guiler
Graduate Theses, Dissertations, and Problem Reports
During this research techniques have been developed to measure the lubricating properties of methanol and various additives. Suitable lubricant additives were found to improve methanol's lubricity to equal that of aviation kerosene, with as little as 1% additive. The lower heating value of methanol required modifications to the WVU gas turbine's fuel system and atomizer, to provide higher flow rate of fuel then required with aviation kerosene. The gas turbine was modified and operated on methanol for an extended period, without failure. Exhaust gas emissions were tested for carbon monoxide (CO), carbon dioxide (CO2), oxides of nitrogen (NOx), total hydrocarbons …
Fine-Scale Modeling Of Failure In An Adhesive Layer, Pulkit V. D. Mathur
Fine-Scale Modeling Of Failure In An Adhesive Layer, Pulkit V. D. Mathur
Graduate Theses, Dissertations, and Problem Reports
Rigid ceramic filter media are used for removing particulate matter from gas streams at high temperatures. As the particulate matter (dust cake) collects on the surface of the filter, the filtration pressure increases; to maintain an economical operation the dust cake must be removed periodically by back-pulse cleaning. Often the dust cake is not removed completely by the back-pulse pressure and the resulting patchy cleaning affects operation.;The thesis presents the results from a fine scale modeling of the removal of a layer of filter cake by a time dependent pressure pulse. In this model the filter cake is grid in …
Enhanced Design For Oxy -Fuel Fired Batch Tanks Using Cfd Methods, Guosheng Kang
Enhanced Design For Oxy -Fuel Fired Batch Tanks Using Cfd Methods, Guosheng Kang
Graduate Theses, Dissertations, and Problem Reports
Oxy-fuel firing is more energy efficient and environment friendly than conventional air-fuel firing and its application for glass melting has begun since 1990. This technology has been advanced for continuous glass melting furnaces based on continued research and application experiences accumulation, while its application in batch tanks is experiencing a transition period. Batch tanks are commonly used by the hand and art glass companies. Compared to continuous furnaces, a batch tank has smaller size and higher operation temperature. The four primary concerns in the application of oxy-fuel firing in batch tanks are (1) The high flame temperature of oxy-fuel firing …
Effect Of Debris-Induced Lift-Off On Magnetic Flux Leakage Inspection Results, Francisco Louis Valentine
Effect Of Debris-Induced Lift-Off On Magnetic Flux Leakage Inspection Results, Francisco Louis Valentine
Graduate Theses, Dissertations, and Problem Reports
Debris is present in all pipelines and has the potential to cause debris-induced lift-off in magnetic flux leakage inspection tools. A test apparatus was developed to qualitatively examine the effect of debris-induced lift-off.;The results of this research indicate that debris-induced lift-off has a detrimental effect on magnetic flux leakage data. This increases the potential of pipeline defects being either undersized or missed.;To reduce or eliminate the effects of debris-induced lift-off, the pipeline should be regularly cleaned. This minimizes the occurrence of large accumulations of debris. If it is determined that debris is present in a pipeline, even in small quantities, …
Rollover Stability Of Partially Filled Heavy-Duty Elliptical Tankers Using Trammel Pendulums To Simulate Fluid Sloshing, Mohamed Ibrahim Salem
Rollover Stability Of Partially Filled Heavy-Duty Elliptical Tankers Using Trammel Pendulums To Simulate Fluid Sloshing, Mohamed Ibrahim Salem
Graduate Theses, Dissertations, and Problem Reports
Partially filled tankers undergoing turns or lane change maneuvers have a lower rollover threshold than any other type of vehicle. In order to study and simulate the lateral fluid sloshing effects in partially filled elliptical and cylindrical tankers a trammel pendulum has been utilized. The fundamental basis of selecting the appropriate pendulum parameters have been obtained by matching the pendulum dynamic effects with fluid sloshing dynamic effects obtained using Finite Element (FE) fluid models. Elliptical tankers with different aspect ratios and different levels of fill were considered. The trammel pendulum effects were verified against fluid models from two packages (FLUENT …
Java-Based Midi Interface For Robot Control, Gaurav Subhash Harode
Java-Based Midi Interface For Robot Control, Gaurav Subhash Harode
Graduate Theses, Dissertations, and Problem Reports
Robot offers an excellent means of utilizing high level technology to make a given manufacturing operation more profitable and competitive. Apart from manufacturing, robots are also being utilized in the areas of medicine and agriculture with great returns. Robotic applications now require multiple robots working in a coordinated manner, something similar to an orchestra. This lead to the concept of a Robotic Instrument Digital Interfacing (RIDI) system for real time coordinated control of robotic devices. It provides a novel runtime environment that supports the building and deployment of distributed robotic devices.;The objective of this research is to design and develop …
Inventory And Prediction Of Heavy-Duty Diesel Vehicle Emissions, Justin Michael Kern
Inventory And Prediction Of Heavy-Duty Diesel Vehicle Emissions, Justin Michael Kern
Graduate Theses, Dissertations, and Problem Reports
A vehicle emissions inventory is an account of emissions produced by all vehicles in an area. Many different factors can affect the emissions and the measurement of the emissions that are used to create an emissions inventory. These factors for heavy-duty diesel vehicles have been addressed and their relative affect on emissions was evaluated from test data and analytical analyses. These elements can affect the emissions by a factor of 15 depending on testing conditions.;One purpose that an emissions database serves is to provide a source for predicting future emissions for a specific vehicle or many vehicles in a general …
Contrawound Toroidal Helical Antenna Modeling Using The Fdtd Method, Khaled Mohammad Elsherbini
Contrawound Toroidal Helical Antenna Modeling Using The Fdtd Method, Khaled Mohammad Elsherbini
Graduate Theses, Dissertations, and Problem Reports
The contrawound toroidal helical antenna (CTHA) is a patented antenna developed at the Center for Industrial Research Applications (CIRA) of West Virginia University. In this study, a computer numerical model was built to simulate the behavior of printed circuit board versions of the CTHA. The numerical model was built upon the finite difference time domain method (FDTD). The results were compared to results from physical antennas, obtained from the CIRA anechoic chamber located in the WVU hanger, to verify the validity of the results of the numerical model. The results from both the numerical and experimental models were also used …
Emissions Testing Of Two Recreational Marine Engines With Water Contact In The Exhaust Stream, Brian E. Mace
Emissions Testing Of Two Recreational Marine Engines With Water Contact In The Exhaust Stream, Brian E. Mace
Graduate Theses, Dissertations, and Problem Reports
Recreational marine engine operation effects water quality as well as air quality. Significant quantities of hydrocarbons are discharged into the rivers, lakes, and estuaries used as recreational boating waters. In order to investigate the impact of recreational marine engine operation on water quality, a MerCruiser 3.0LX four-cylinder four-stroke inboard engine and a Mercury 650 two-cylinder two-stroke outboard engine were tested using EPA required certification procedures. Both engines were tested with exhaust gas/cooling water mixing (scrubbing) in the exhaust stream using both freshwater and saltwater. Additionally, the inboard engine was tested without exhaust scrubbing. Gaseous emissions (HC, NOx, CO, and CO2) …
Alloying Effects On High-Temperature Deformation Behavior Of Nickel Aluminide Intermetallics, Robert Adrian Coulter Ii
Alloying Effects On High-Temperature Deformation Behavior Of Nickel Aluminide Intermetallics, Robert Adrian Coulter Ii
Graduate Theses, Dissertations, and Problem Reports
The objective of this research is to examine the possibility of using nickel aluminide for high temperature structural applications. NiAl is a desirable candidate based on its low density, high thermal conductivity, high melting temperature, and its proven oxidation resistance. Currently, limited ductility at lower temperatures and low creep resistance at high temperatures limit the capabilities of NiAl.;For this research four different alloys were investigated to determine the effects of alloy strengthening. The three elements are next to one another on the periodic table, which will provide the electron number effect (Mo vs. Nb) and the atomic size effect (Cr …
Refined Turbulence Models For Simulation Of Ic -Engine Cylinder Flows, Ibrahim Yavuz
Refined Turbulence Models For Simulation Of Ic -Engine Cylinder Flows, Ibrahim Yavuz
Graduate Theses, Dissertations, and Problem Reports
Turbulence and turbulent mixing are two of the most important factors that influence the efficiency and emissions level in internal combustion (IC) engines, particularly for diesel engines. This study has been performed with the premise to accurately predict in-cylinder turbulence by employing the large eddy simulation (LES) technique. In order to assess the turbulence scales involved correctly, a review of measured and computed scales relevant to IC engines is conducted. An assessment of these is made in comparison with the self-imposed scales of the engine itself. This assessment focuses on the influence of combustion, compression ratio, initial conditions and numerical …
Point Doppler Velocimetry Measurements In Circular Jets, Patrick Michael Collins
Point Doppler Velocimetry Measurements In Circular Jets, Patrick Michael Collins
Graduate Theses, Dissertations, and Problem Reports
Improvements have been made to an existing 2-component Point Doppler Velocimetry (PDV) system to improve instrument accuracy and repeatability and to reduce mean velocity offset. Most importantly, the original iodine cells have been replaced by vapor-limited iodine cells that are not influenced by room temperature variations. PDV is a non-intrusive laser based flow measurement technique with capabilities that are similar to hot wire anemometry, but without inserting a probe into the flow. The insertion of a probe into a flow can affect the flow, resulting in inaccurate measurements.;PDV measurements for 1 inch diameter standard, swirling, and annular jets have been …
Evaluation Of Lubricants For Cold Forming Of Steels By Double-Cup Extrusion Tests, Shivakumaran Bharadwaj Venkataraman
Evaluation Of Lubricants For Cold Forming Of Steels By Double-Cup Extrusion Tests, Shivakumaran Bharadwaj Venkataraman
Graduate Theses, Dissertations, and Problem Reports
The double-cup extrusion testing method was chosen for measuring the pressure and material flow parameters in order to quantify the frictional shear factor between the workpiece and the forming tool in cold metal forming processes. The test was adapted to be used under production conditions and applied to characterize and compare the lubrication properties of different types of lubricants and coatings.;It was found to be a useful approach to estimate the relative efficiency of different lubricants and coating methods. It indicated that one specific lubricant has significantly superior lubricant characteristics than others.;FEA analysis of the experimental setup was constructed to …
Composition Effects On Macroscopic Solidification Segregation Of Superalloys, Wei Chen
Composition Effects On Macroscopic Solidification Segregation Of Superalloys, Wei Chen
Graduate Theses, Dissertations, and Problem Reports
This research work investigates primarily the composition effects on solidification macrosegregation, i.e. freckles, in superalloys. First, the freckling mechanism of superalloys is developed using the physical simulation of freckle formation in specially designed model alloys. It is found that freckles originate from dendrite irregularities at the solidification front. The freckle channels flow downward in Nb-containing alloys and upward in T-containing alloy under horizontal solidification conditions. The horizontal solidification correctly simulates the horizontal component in remelt ingot where freckling potential is the highest. Based on the result, key control parameters for freckling are identified.;Thermodynamic simulation approach is employed to study the …