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Articles 1 - 11 of 11
Full-Text Articles in Engineering
Thermal Testing And Simulation Of Lunar And Martian Isru-Based Materials, Andres Campbell
Thermal Testing And Simulation Of Lunar And Martian Isru-Based Materials, Andres Campbell
All Undergraduate Theses and Capstone Projects
Upon the eventual return of humans to the lunar surface, leveraging local resources to construct landing pads and other infrastructure is an essential component to minimize cost and risk. The inability to accurately model landing and launch scenarios to predict damage to lunar structures poses risks to astronaut and equipment safety. The following experiment is an investigation of using simulation software and temperature sensors to model lunar and Martian regolith simulant-based concrete exposed to thermal loads. The basis of this experiment is built upon standards defined by the American Society for Testing and Materials, the fundamental axioms of structural health …
Supervised Machine Learning Techniques Applied To Low-Cost Air Quality Sensor Suites, Peter Wahman
Supervised Machine Learning Techniques Applied To Low-Cost Air Quality Sensor Suites, Peter Wahman
All Undergraduate Theses and Capstone Projects
Low-cost PM sensors have garnered interest for their ability to reduce the cost of investigating PM concentrations in both indoor and outdoor spaces. They perform well in high concentration lab testing with correlation coefficients greater than 0.9. In real-world applications, the correlation coefficients drop significantly because of sensing floors and adverse ambient conditions. There are plenty of supervised machine learning techniques that aim to correct the measurements ranging from linear regression to more advanced neural networks and random forests. This work aims to use those more complicated techniques to adjust the measurements using other data sets gathered by a sensor …
Implementation And Usage Of Low-Cost Turbines For Power Generation In Water Networks, Luis Javier Ortiz Osornio
Implementation And Usage Of Low-Cost Turbines For Power Generation In Water Networks, Luis Javier Ortiz Osornio
All Graduate Theses, Dissertations, and Other Capstone Projects
The following APP is part of an investigation and development, carried out to design, and implement a hydroelectric turbine of horizontal axis, in order to generate electrical energy in rural areas, utilizing existing infrastructure or natural waterways such as irrigation canals, piping, rivers and streams. Every industrialized country, as well as, most of the developing nations, have a stake in agriculture and thus access to the infrastructure required for irrigation purposes. Artificial irrigation canals offer advantages such as a clean continuous flow, with the possibility of flow regulation: this together with their vast availability as agricultural infrastructure constitute the main …
Optimal Speed Control Of Electric Vehicles In Traffic With Wireless Charging, Amina Jemi
Optimal Speed Control Of Electric Vehicles In Traffic With Wireless Charging, Amina Jemi
All Graduate Theses, Dissertations, and Other Capstone Projects
With the increase in electric vehicle use in recent years and expected increase in the future, a wireless network provides a possible option to allow vehicles with a route while maintaining an approximate net-zero energy balance under certain scenarios. In this type of network, a collection of wireless charging pads is installed under the road, and energy transfer occurs, while a vehicle with wireless charging capability is driven over the charging pads. This thesis describes a methodology and modeling to solve an optimization problem involving a speed-controlled vehicle in traffic. The methodology incorporates a receding horizon dynamic model with constraints. …
Fundamental Factors For Success: Engineering Faculty And Industry Partners, Molly F. Schaefer
Fundamental Factors For Success: Engineering Faculty And Industry Partners, Molly F. Schaefer
All Graduate Theses, Dissertations, and Other Capstone Projects
Partnerships and collaborations between higher education and industry have a long history in the United States. Numerous partnerships have contributed to advancements in the economy, education and training, humanity, and innovation. The subject areas of science, engineering, and technology are fields in which many of the collaborations occur, and many of the partnerships are often initiated and led by a faculty and a member of industry. Yet, it remains unclear how academia and industry achieve successful partnerships when the goals, language, culture, and organizational structures significantly differ from one organization to another. This study examined whether partnerships among engineering faculty …
Pathways Towards An Engineering Baccalaureate Degree - Critical Incidents And Factors Leading Students To Choose Community College: A Phenomenological Study, Joan Zitur Carter
Pathways Towards An Engineering Baccalaureate Degree - Critical Incidents And Factors Leading Students To Choose Community College: A Phenomenological Study, Joan Zitur Carter
All Graduate Theses, Dissertations, and Other Capstone Projects
Women and underrepresented minorities can help fill the ever-growing demand for engineers in the United States. Quality teaching methods, an understanding of the cognitive aspects of learning, and faculty addressing biases help ensure student success in engineering majors. Accordingly, the community college engineering pathway can help fill the national need for engineers. This phenomenological study sought to describe the experience of students who choose the community college pathway toward a Bachelor of Science degree in Engineering. Thirteen participants were interviewed; all took engineering courses at the same community college, transferred to a four-year engineering university (10 to a R1), and …
Power Decoupling Control And Optimization For A Photovoltaic Inverter In D-Q Rotation Frame, Zhaoxia Yang
Power Decoupling Control And Optimization For A Photovoltaic Inverter In D-Q Rotation Frame, Zhaoxia Yang
All Graduate Theses, Dissertations, and Other Capstone Projects
In the past decade, solar energy, the fastest growing renewable energy, has been a growing interest in integration to the utility grid. Power electronics converters play important role in renewable energy integration, e.g., integrate the distributed photovoltaic (PV) panels to the grid. In many applications, particularly in the residential area, a single-phase rather than three-phase inverter is used to regulate the voltage from one form to the other while tracking the maximum power point of the PV system. The input voltage and current are DC and its maximum power is desired to be a constant value. However, in the single-phase …
A Soft-Switched Three-Port Dc-Dc Converter For A Pv/ Battery System, Mohamedelfatih Dosa
A Soft-Switched Three-Port Dc-Dc Converter For A Pv/ Battery System, Mohamedelfatih Dosa
All Graduate Theses, Dissertations, and Other Capstone Projects
This thesis proposed a soft-switched three-port bidirectional DC-DC converter for managing the power flow of a photovoltaic (PV) and battery system. The proposed converter consists of three ports connected to a PV panel, battery, and load. These three ports are interfaced through the high-frequency transformer and use phase-shift control to achieve soft-switching for all converter switches. Compared with the traditional multiport converters, the proposed three-port converter uses the least number of power switches, and zero-voltage switching (ZVS). Simulation and experimental results validate the design and effectiveness of soft switching and power flow control. The converter can work in different scenarios …
Printed Circuit Board Defect Detection Using Image Processing, Nandeera Kamalaja De Silva Munaweera Tanthirige
Printed Circuit Board Defect Detection Using Image Processing, Nandeera Kamalaja De Silva Munaweera Tanthirige
All Graduate Theses, Dissertations, and Other Capstone Projects
This study was conducted to verify the hypothesis of the possibility to design an Automated Defect Detection system at a budget using image processing software. Focusing mainly on simplicity of integration with the capability to inspect a high variation of PCB with less user input. Reference comparison method was utilized to construct the defect detection algorithm where a defect free reference PCB gets compared with an inspection image to identify defects and anomalies. The paper discusses the range of possible defects for inspection on non-assembled PCBs, suggests methods for image processing and presents a final inspection algorithm, including their testing. …
Precision Machining Of Polymer Matrix Composites, Victor Martinez Polanco
Precision Machining Of Polymer Matrix Composites, Victor Martinez Polanco
All Graduate Theses, Dissertations, and Other Capstone Projects
This experiment was started to figure how the precision machining of polymer matrix composites differ from metals such as aluminum and steel. Polymer matrix composites are highly used in powered vehicles for their strength and light weight properties, but they are typically not machined to their final product how metals are. Polymer matrix composites are typically manufactured near their final shape, with some trimming involved to complete its shape. This research machined carbon fiber manufactured through a wet layup and through resin infusion, as well as aluminum and steel to compare their machineability and their surface finish. These materials were …
Improved Warehouse For Smt Material Management Using Modern Technology Retrieval System And Better Traceability, Ferdinand Mabeya
Improved Warehouse For Smt Material Management Using Modern Technology Retrieval System And Better Traceability, Ferdinand Mabeya
All Graduate Theses, Dissertations, and Other Capstone Projects
Warehouse plays a vital role in the manufacturing and distributing goods from raw material to manufacturer and finally to the end-user. Optimizing warehouse material management will make an impact on productivity, quality, and on-time delivery. My thesis focuses on material management of surface mount (SMT) from suppliers, receiving and inspection, and warehouse to maximize efficiency. With SMT line costing over 2 million, the warehouse material management is improved. Things like cycle count and picking material are much faster. It makes the overall equipment efficiency (OEE) very low. To make this material management process possible, manufacturers must embrace Six Sigma and …