Engineering Commons^™

A Study & Comparison Of Lift Boosters For An Unmanned Aerial Vehicle, Trevor Sean Dady

Theses and Dissertations

Unmanned aerial vehicles are becoming increasingly prevalent in modern society for tasks, such as package delivery, defense, and cinematography. Due to this surge in applications, many researchers have begun to search for improvements to unmanned aerial vehicles for their lift and thrust properties. Potential solutions to magnify an unmanned aerial vehicle’s thrust capability are the implementation of Coanda surfaces, nozzles, or bowl-shaped structures on each propeller. Coanda surfaces provide additional lift force by creating a vacuum in response to the adhesion of fluid to the smooth surface. Nozzles can constrict the flow of air, while also increasing its velocity. The …

Thermal Transient Analysis Of Mahogany Wood Biomass Pyrolysis: The Role Of Zeolite Catalyst Variations On Temperature Distribution, Yusri Yusri, Widya Wijayanti, Mega Nur Sasongko

Journal of Mechanical Engineering Science and Technology (JMEST)

Biomass pyrolysis is a thermochemical process that converts waste into fuel. The use of zeolite catalysts can enhance efficiency by accelerating biomass decomposition. To demonstrate its effect, thermal simulations were conducted using ANSYS Thermal Transient to analyze temperature distribution, reaction rates, and catalyst effectiveness in the pyrolysis process. This study aims to improve thermal efficiency and temperature uniformity by analyzing the effect of 10% and 20% zeolite mixtures on heat distribution and heating rates at input temperatures of 650 K, 750 K, and 850 K, using the 2D axial symmetry method. The simulation was performed under specific boundary conditions: input …

Effects Of Niobium On The Mechanical And Oxidation Properties Of Additively Manufactured Tungsten, Alexander Lesieur, Cayla Eckley, Ryan A. Kemnitz

Faculty Publications

Although additive manufacturing presents a novel and customizable approach to fabricating tungsten (W) alloys, the layer-by-layer production technique presents a unique set of processing challenges which are further exacerbated by the metal’s refractory properties. In this study, additions of niobium (Nb) were found to improve the mechanical properties and oxidation resistance of additively manufactured W. Microstructural investigation revealed the effect of Nb on the cracking, grain size, and texture in the as-built material. Mechanical compression testing showed significant improvement in ductility with increasing Nb content. The low concentrations of Nb used did not induce large changes in the yield strength …

Comprehensive Analysis Of Spray Development And Low Temperature Combustion Characteristics In A Cvcc With Nvh Of Renewable Aerospace Fuels: Hefa & Ft Synthetic Kerosene (S8) Compared To Jet-A & Ulsd, Coleman Norton

Honors College Theses

A comprehensive analysis was conducted to research the viability of Hydroprocessed Esters and Fatty Acids (HEFA) and S8 Synthetic Kerosene fuels as a drop-in replacement for conventional petroleum-based fuels, Jet-A and ULSD (Ultra Low Sulfur Diesel). Global transportation remains heavily dependent on liquid fossil fuels, while renewable aerospace fuels offer a promising pathway to reducing life cycle greenhouse gas emissions and pollution. However, the combustion performance and long-term feasibility of these fuels remain insufficiently characterized. This study performed a thorough assessment of each fuel's thermophysical and combustion properties. Thermophysical characterization encompassed viscosity, freezing point, energy density, spray atomization, and volatility. …

Active Brazing Of Single Crystal Al2o3 To Kovar Alloy With Agcuzr Filler Metal, Anthony M. Mcmaster

Mechanical Engineering ETDs

Brazing provides high strength and hermetic joining between metal, ceramic, and composite materials. Origins of the brazing process trace back to 3000BC, yet the technique continues to maintain relevance and demand across aerospace, medical, electronic, optical, and mechanical engineering. Here, single crystal Al2O3 (sapphire) was joined to Kovar in a single step via an AgCuZr active braze filler metal. The microstructure of the completed joint was investigating using microscopy and spectroscopy techniques. A unique braze chamber, paired with an optically clear top substrate (sapphire), allowed further investigation into the dynamics of the active braze process via in situ video monitoring. …

Scalable Advanced Control Of Building Hvac Systems Using Physics-Informed Machine Learning, Xuezheng Wang

Dissertations - ALL

Buildings account for approximately 40% of total energy consumption in the United States, with HVAC systems representing the single largest energy end-use. Advanced control strategies such as model predictive control (MPC), reinforcement learning (RL), and differentiable predictive control (DPC) have demonstrated significant energy savings in individual studies, yet their widespread adoption remains limited by the lack of scalable, control-oriented dynamic models, the absence of consensus on control strategy selection, and the gap between single-zone research and multi-zone real-building deployment. This dissertation addresses these barriers through an integrated research program spanning physics-informed machine learning (PIML) model development, advanced control evaluation, and …

The Design And Manufacturing Process Of The Concealed Shelf, Mary-Del R. Jansen

Honors Theses

The Haley Barbour Center for Manufacturing Excellence (CME) at the University of Mississippi challenges students to manufacture a product and put forth a balanced manufacturing line in a senior capstone project. The chosen product was a concealed shelf, or a shelf with a hidden compartment. The team aimed to design a product, formulate a project plan, analyze the market, conduct financial analysis, develop a prototype, establish a manufacturing process, and demonstrate that process in two production runs. The team used tools such as Computer Aided Design (CAD), market surveys, jig creation, and line balancing to accomplish these tasks. After two …

The Design And Manufacturing Process Of The Concealed Shelf, Clarence A. Matthews Iv

Honors Theses

The Haley Barbour Center for Manufacturing Excellence (CME) at the University of Mississippi challenges students to manufacture a product and put forth a balanced manufacturing line in a senior capstone project. The chosen product was a concealed shelf, or a shelf with a hidden compartment. The team aimed to design a product, formulate a project plan, analyze the market, conduct financial analysis, develop a prototype, establish a manufacturing process, and demonstrate that process in two production runs. The team used tools such as Computer Aided Design (CAD), market surveys, jig creation, and line balancing to accomplish these tasks. After two …

Manufacturing Process Of A Wooden Tortilla Press: Idea To Production, Colleen Nolan, Ben Bird, Olivia Marque, Emma Palmer, Hayden Walker

Honors Theses

The purpose of this thesis is to document the design, development, and manufacturing of a wooden tortilla press completed as a capstone project through the Center for Manufacturing Excellence (CME). The project follows a structured product development process that began with problem definition and concept development, progressed through design, prototyping, and jig fabrication, and culminated in a full production run on the CME shop floor. A multidisciplinary team, including engineers, a marketer, and an accountant, collaborated throughout the project to support both technical development and manufacturing execution. Project planning and scheduling were established early and maintained throughout the project to …

Manufacturing Of A Wooden Tortilla Press: Idea To Production, Glenn H. Walker

Honors Theses

The purpose of this thesis is to document the design, development, and manufacturing of a wooden tortilla press completed as a capstone project through the Center for Manufacturing Excellence (CME). The project follows a structured product development process that began with problem definition and concept development, progressed through design, prototyping, and jig fabrication, and culminated in a full production run on the CME shop floor. A multidisciplinary team, including engineers, a marketer, and an accountant, collaborated throughout the project to support both technical development and manufacturing execution. Project planning and scheduling were established early and maintained throughout the project to …

Design And Production Of A Carbon Fiber Longboard, Julia H. Stradinger

Honors Theses

This thesis contains an overview of the design, prototyping, and manufacturing of a carbon fiber long board. The purpose of this capstone was to create a viable product for the real-world market and then determine how to manufacture it at scale with sustainable financial practices. In order to accomplish this task, engineering, accounting, and manufacturing challenges had to be overcome throughout all stages. The production process involved the carbon fiber layup, baking, water jet cutting, and assembly of the carbon fiber longboard. In order to optimize this process, continuous improvement and lean manufacturing problem solving techniques were applied. After a …

Development Of A Putting Green Manufacturing Process, Tabitha R. Webster

Honors Theses

Our Capstone project investigates the end to end design, development, and production of a 6‑foot long portable putting green marketed for individuals seeking a high quality, competitively priced golf product for home or office use. The capstone project examines the full lifecycle of product creation applying manufacturing principles learned through the center of manufacturing’s coursework. From the initial concept through engineering design, market research, prototyping, manufacturing optimization, and final production the project emphasizes cross‑functional collaboration across engineering, business, and accountancy majors. Methods used to gather data included marketing surveys, CAD drawings, time studies during production runs, value stream mapping, and …

Manufacturing Process Of A Wooden Tortilla Press: Idea To Production, Olivia R. Marque

Honors Theses

The purpose of this thesis is to document the design, development, and manufacturing of a wooden tortilla press completed as a capstone project through the Center for Manufacturing Excellence (CME). Following the technical details of this thesis is a personal reflection by one team member, Olivia Marque. The project follows a structured product development process that begins with problem definition and concept development, progresses through design, prototyping, and jig fabrication, and culminates in a full production run on the CME shop floor. A multidisciplinary team, including engineers, a marketer, and an accountant, collaborates throughout the project to support both technical …

Design And Development Of A Manufacturing Process For A Raised Planter Box, Weslyn Mcmurrin, Larson Looney, Haneef Adebisi, Rachel Hipskind, Carolyn Hale

Honors Theses

This report presents the design and manufacturing process of a raised garden bed box with an integrated irrigation system. The goal of this project was to replicate a manufacturing environment in the creation of a durable, ergonomic, and cost-effective product. The project began in Spring 2025 with initial market and financial research to determine design requirements and materials for prototype development and continued through the end of the Fall 2025 semester with a small-scale production run and team presentation. Following our market and financial research, multiple design concepts were evaluated and refined through the use of computer-aided design and prototype …

The Design And Manufacturing Process Of The Concealed Shelf, Joshua Harvel

Honors Theses

The Haley Barbour Center for Manufacturing Excellence (CME) at the University of Mississippi challenges students to manufacture a product and put forth a balanced manufacturing line in a senior capstone project. The chosen product was a concealed shelf, or a shelf with a hidden compartment. The team aimed to design a product, formulate a project plan, analyze the market, conduct financial analysis, develop a prototype, establish a manufacturing process, and demonstrate that process in two production runs. The team used tools such as Computer Aided Design (CAD), market surveys, jig creation, and line balancing to accomplish these tasks. After two …

Plastic Material Analysis And Bonding In Small Aquatic Vessels, Andrew R. Orr

Honors College Theses

This project presents the design and development of a suitable vessel for small-scale aquatic applications. The developed project is used for a remote-controlled duck hunting system, and the parameters of the design are based on the requirements for the system as a whole. Traditionally, plastics are fabricated using blow molding to create a single seamless form. However, for small-scale prototyping with limited resources, this method of fabrication is unsustainable for short-term, non-industrial design applications. As a result, an existing longer hull is selected and shortened to meet the required project length. The project evaluates multiple initial hull designs, ultimately selecting …

Development Of A Putting Green Manufacturing Process, Jose Andres Cepeda Santiago

Honors Theses

Our Capstone project investigates the end-to-end design, development, and production of a 6‑foot long portable putting green marketed for individuals seeking a high quality, competitively priced golf product for home or office use. The capstone project examines the full lifecycle of product creation applying manufacturing principles learned through the center of manufacturing’s coursework. From the initial concept through engineering design, market research, prototyping, manufacturing optimization, and final production the project emphasizes cross‑functional collaboration across engineering, business, and accountancy majors. Methods used to gather data included marketing surveys, CAD drawings, time studies during production runs, value stream mapping, and controlled documentation …

Development Of A Putting Green Manufacturing Process, Avalon R. Madden

Honors Theses

Our Capstone project investigates the end to end design, development, and production of a 6‑foot long portable putting green marketed for individuals seeking a high quality, competitively priced golf product for home or office use. The capstone project examines the full lifecycle of product creation applying manufacturing principles learned through the center of manufacturing’s coursework. From the initial concept through engineering design, market research, prototyping, manufacturing optimization, and final production the project emphasizes cross‑functional collaboration across engineering, business, and accountancy majors. Methods used to gather data included marketing surveys, CAD drawings, time studies during production runs, value stream mapping, and …

The Design And Manufacturing Process Of The Concealed Shelf, Emma R. Freeman

Honors Theses

The Haley Barbour Center for Manufacturing Excellence (CME) at the University of Mississippi challenges students to manufacture a product and put forth a balanced manufacturing line in a senior capstone project. The chosen product was a concealed shelf, or a shelf with a hidden compartment. The team aimed to design a product, formulate a project plan, analyze the market, conduct financial analysis, develop a prototype, establish a manufacturing process, and demonstrate that process in two production runs. The team used tools such as Computer Aided Design (CAD), market surveys, jig creation, and line balancing to accomplish these tasks. After two …

The Optimization Of A Robotic Welding Arm To Improve Efficiency, Margaret Close

Honors Theses

The main objective of this report is to optimize a robotic welding arm to improve a locker manufacturing process. The robotic welding arm, a Miller PerformArc, used by Lockers Manufacturing has been producing spatter. Spatter significantly reduces the quality of the product and increases the product’s manufacturing time. The goal of this project was to find the best solution to reduce spatter without weakening the welds and ensuring that efficiency will increase. The first step in this project was to test multiple weld testing variables such as voltage, current, welding angle, robot speed, and arc and crater ratios. For each …

Design And Production Of A Carbon Fiber Longboard, Jacob T. Williams

Honors Theses

This thesis contains an overview of the design, prototyping, and manufacturing of a carbon fiber long board. The purpose of this capstone was to create a viable product for the real-world market and then determine how to manufacture it at scale with sustainable financial practices. In order to accomplish this task, engineering, accounting, and manufacturing challenges had to be overcome throughout all stages. The production process involved the carbon fiber layup, baking, water jet cutting, and assembly of the carbon fiber longboard. In order to optimize this process, continuous improvement and lean manufacturing problem solving techniques were applied. After a …

Manufacturing Processes Of A Wooden Tortilla Press: Idea To Production, Emma J. Palmer, Glenn Walker, Colleen Nolan, Olivia Marque, Benjamin Bird

Honors Theses

This thesis follows the Manufacturing Process of a Wooden Tortilla Press from idea to production following lean manufacturing processes and producing a valuable, and profitable product.

Design Optimization Of Active-Stabilizing Canards For High-Powered Rockets, Simon Babcock

Senior Honors Theses

Rocket canards are a common means of stabilizing a high-powered rocket in flight by producing aerodynamic forces to correct the rocket's trajectory. The size, shape, and position of the canards relative to the rocket body determine their control effectiveness and aerodynamic efficiency – two objectives of canard design with an inverse relationship to each other. By integrating automated iterative rocket trajectory simulation with adaptive surrogate modelling, this research optimized the canard planform geometry for a high-powered rocket to maximize the canards’ control effectiveness and aerodynamic efficiency through multi-variable, multi-objective design optimization. The canard design was first parameterized into four design …

Ballistics Characterization Of Micro-Truss Reinforced Lunar-Inspired Geopolymer Concrete For Space Construction, Phoebe G. Johnson

Honors Theses

This research investigates the ballistics response and compressive strength of a Fly Ash/ Lunar Regolith hybrid geopolymer concrete developed for space construction. The study aimed firstly to optimize the Fly Ash/ Regolith mix ratio for maximum mechanical performance and secondly, to evaluate the effectiveness of carbon-fiber micro-truss reinforcement, produced by 3D printing, in mitigating damage from high-velocity impacts. Concrete specimens with varying Fly Ash-to-Regolith ratios (100-50% Fly Ash) were fabricated and tested under compression and ballistic loading. Compressive strength tests followed ASTM C109 using a 110 Kip 810-MTS testing apparatus on both unreinforced and reinforced 2” cubes. For unreinforced samples, …

The Design And Manufacturing Process Of The Concealed Shelf, Mexrojiddinbek Sattorov

Honors Theses

This document contains information regarding the design and build process of the Concealed Shelf, which is a furniture product with hidden storage capability. First, the team members decided on the design of the product, followed by market analysis and manufacturing feasibility. Lean manufacturing principles were applied to improve the process efficiency and reduce waste.

Multiple prototypes were built with varying raw materials and locking mechanisms. Jigs and fixtures were handcrafted to ensure more consistent product quality. Two production runs were conducted to evaluate performance and identify areas for improvement.

The final design includes economic considerations, manufacturing layout, and continuous improvement …

Brine Solidification And Metals Sequestration Using Lignocellulosics, Frank Kvietok

World of Coal Ash Proceedings

Coal ash has historically been used as a convenient, on-site solidification material for brines generated from flue gas desulfurization at power plants. As alternate utilization scenarios are developed for coal ash, lignocellulosic (wood-based) sorbents can serve as a highly efficient substitute for the solidification process. Results will be shared for a variety of different brine types: thermally reduced, thermally reduced and neutralized, and reverse osmosis. In addition to solidification performance, which demonstrated a 3-4x mass of liquid vs mass of sorbent factor, studies were conducted to quantify the strength of binding to the wood-based sorbent for a broad range of …

Practical Guidelines For Pump Testing Of Ccr: Workflow, Design, And Lessons Learned., Nathanial Keller, Brian Hennings, Vic Modeer, Katie Moran

World of Coal Ash Proceedings

This session presents a streamlined approach for pump testing of coal combustion residuals (CCR) to maximize hydraulic information with limited well installations, variable pumping rates, and short tests. Pre-test forward modeling identifies well offsets (typically 5–10 ft) and test durations (~2–6 hours) to yield measurable and analyzable drawdown at observation wells despite low pumping rates. Field execution consists of short step-drawdown testing to evaluate well specific capacity and select pumping rates for a constant rate test with one or more observation wells. Test results facilitate analysis of transmissivity and storativity of the CCR. Applied at two Midwestern sites with different …

Simplified Approximate Procedure For Assessing The Implications Of Updated Usgs Seismic Hazard Models On Seismic Stability Assessments Of Ccr Impoundment Facilities, Nick Mcclung, Matt Bishop, Adrian Pena-Iguaran, Seda Gokyer-Erbis

World of Coal Ash Proceedings

Selection of appropriate seismic design ground motions remains a key challenge for seismic stability assessments of coal combustion residual (CCR) impoundment facilities, particularly where regulatory guidance does not specify a required hazard model. This paper examines the implications of using Uniform Hazard Spectra (UHS) derived from the 2014 versus the 2018 U.S. Geological Survey (USGS) National Seismic Hazard Model (NSHM) for seismic amplification and stability evaluations of the Tennessee Valley Authority (TVA) Widows Creek Fossil (WCF) Plant CCR Management Units. The 2018 NSHM incorporates updated understanding of seismicity in the central and eastern United States and generally predicts higher ground …

Before The Limit Hits: Lessons From A Proactive Construction Air Monitoring Program, Brian Egan, Nicholas Golden, Wendy Depp

World of Coal Ash Proceedings

This presentation describes a comprehensive air monitoring program designed to protect workers and nearby neighborhoods during ash pond closure work. The program uses three main components: project (or boundary) monitoring at the site perimeter to track dust near the project boundaries, work area monitoring placed near active construction zones, and personal sampling on individual workers at regular intervals. Together, these approaches provide data on both community impacts and worker exposures, helping the team respond quickly when levels approach action limits. The Teams actions prior to exceedance of regulatory limits has helped prevent exposures. The talk will explain how monitors are …

Integrating Advanced Geochemical Workflows With Modern Statistical Tools To Improve The Decision-Making Process At Ccr Sites, A Case Study, Glenna Thomas

World of Coal Ash Proceedings

While statistical assessment provides the foundation for CCR compliance reporting, incorporating a holistic geochemical framework transforms statistics from a compliance requirement into a powerful predictive tool. Strategic geochemical insight established the basis of understanding needed to support successful statistical approaches and to ensure that statistical outcomes reflect actual groundwater behavior. Whether it is trend analysis, delineating source mechanism, or updating geochemical conceptual site models (GCMs), geochemical context provides the technical foundations for statistical outputs and methods. A continuously refined GCSM enhances the ability to anticipate how groundwater chemistry should evolve, improving interpretation and predictive capability. This allows practitioners to understand …