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Filtering by: Academic Affiliation Mechanical, Industrial, and Manufacturing Engineering Remove constraint Academic Affiliation: Mechanical, Industrial, and Manufacturing Engineering Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.) Language English [eng] Remove constraint Language: English [eng]

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Comparing and Contrasting the Merits of Additive Manufactured Electric Vehicle Suspension Components: GFR Case Study

Creator:

Peraza-Garcia, Jesus

Abstract:

This thesis compares the implementation of additive manufactured suspension uprights against subtractive manufactured suspension uprights from concept generation, design, and validation through simulation. Additive manufactured suspension uprights were designed for Global Formula Racing’s 2023 electric vehicle. Utilizing Siemens NX, Nastran, Fusion 360, and Ansys Workbench both subtractive and additive manufactured...

Resource Type:

Masters Thesis
Student Club Analysis: The Effects of Organizational Structuring on Competition Performance

Creator:

Chandler, Jacob J.

Abstract:

This thesis aims to explore the effects of organizational and management principles within the context of a student club – an international Formula Student team. Research on the effects of organizational structuring on student club performance tends to be qualitative in nature. While considering the inherent complexity of the human...

Resource Type:

Masters Thesis
Exploring the Ductility Minimum of Niobium C103 at Intermediate Temperatures using Triaxial Tensile Specimens

Creator:

Wood, Thomas N., II

Abstract:

This work explores the mechanical properties of single-phase niobium alloy C103 from room temperature to 600°C for the purpose of expanding safe uses of the material into new applications. The study utilizes a symmetrically notched triaxial tensile specimens to manipulate the internal stress field in order to observe the changes...

Resource Type:

Masters Thesis
Operation of a High-Temperature Oxidation Reactor for Thermochemical Energy Storage

Creator:

Ramsey, Owen C.

Abstract:

The cost of long-duration energy storage poses one of the most significant limitations on the penetration of renewables into power grids. Thermochemical energy storage has great potential to reduce this cost through the use of a reversible redox reaction pair that has a high enthalpy of reaction. The chemical nature...

Resource Type:

Masters Thesis
Evaluation of system-level performance of closed thermochemical energy storage systems for space heating

Creator:

Rivera, Kate E.

Abstract:

This study evaluates the system efficiency and energy-offsetting capabilities of a closed-cycle thermochemical energy storage (TCES) system. Current TCES research primarily focuses on material selection and reactor design but overlooks the practical limitations faced on a system level. Thus, this study investigates various TCES integration methods for providing building space...

Resource Type:

Masters Thesis
Functional analysis to inform early design decisions for novel systems with substantial operations and maintenance costs

Creator:

Algarra, Nathan

Abstract:

Long field-life systems are those for which operational, as opposed to capital, expenditures dominate the life time cost of the system. In established product categories, operational experience and historical maintenance data allows engineers to make informed decisions influencing maintenance during the early design stages when design changes are at their...

Resource Type:

Masters Thesis
Realized regulatory complexity : unveiling the hidden effect of regulation structure on product architecture

Creator:

Robinson, David Myles

Abstract:

Government regulation is an established policy tool for inducing technological innovation in a market. For example, many environmental regulations prescribe performance requirements that industry complies with by innovating aspects of the product design. These design innovations might include updated components, new functionality, or a revised product architecture. However, the effect...

Resource Type:

Masters Thesis
Generalized Chip Formation and Thermal Dynamics of Modulated Turning

Creator:

Ozdemir, Mert

Abstract:

Modulation assistance is widely employed to improve chip management in turning. This process is also known as modulated turning. Modulated turning transforms continuous cutting into intermittent cutting by periodically disengaging the tool tip from the workpiece, resulting in the generation of short, easily managed chips. This novel method improves the...

Resource Type:

Masters Thesis
Integrating Systemic and Applied Anthropology Approaches to Identify Barriers and Enablers to Accessing Healthcare in the Province of Buenos Aires, Argentina

Creator:

Copple, Ethan L.

Abstract:

Healthcare access exhibits differing levels of complexity, often requiring multi-disciplinary approaches to study its barriers and enablers. Though Argentina has achieved nominal universal healthcare coverage through its public healthcare system, full effective coverage has not been achieved. The public system also has a parallel private care system, adding further complexity...

Resource Type:

Masters Thesis
Learning from optimization for bipedal robots

Creator:

Yu, Fangzhou

Abstract:

Legged robots have consistently captured our collective imagination through various forms of media, from Hollywood films, anime, and viral Youtube videos of robots accomplishing incredible feats of acrobatics. These robots have the potential to navigate our environments, capable of completing tasks that would otherwise require human intervention. However, developing controls...

Resource Type:

Masters Thesis
Mining Temporal Patterns for Prediction: A Mixed-Integer Programming Approach

Creator:

Mansourifard, Farzaneh

Abstract:

In the past two decades, the advancement in data collection and storage have led to the accumulation of complex datasets. Consequently, various industries have sought data-driven solutions to predict and detect anomalies. Temporal patterns have emerged as potential features in prediction models that could improve the performance of the identification...

Resource Type:

Masters Thesis
LPBF and Post Processing of H13 Tool Steel

Creator:

Alabdulali, Ali

Abstract:

Laser powder bed fusion (LPBF) is an innovative method where metal powder is fused together to generate complex geometries. LPBF is used as a technology to reduce material waste, and extensive labor that are often linked to conventional subtractive manufacturing. H13 tool steel is one of the widely used materials...

Resource Type:

Masters Thesis

Date Created:

2023-08-31
Multi-objective Optimization for Equitable Post-Disaster Relief Supply Distribution

Creator:

Subramaniam, Purnima

Abstract:

Humanitarian logistics in the post-disaster phase of an earthquake requires detailed planning about the relief distribution network including assigning available distribution centers (DCs) to the affected areas, distribution of the relief commodities demanded by the affected population, and efficient allocation of the available vehicle fleet for the distribution in a...

Resource Type:

Masters Thesis
Modeling of Non-Spherical Particle Dynamics in a Non-Uniform Flow

Creator:

Alshehri, Ahmad S.

Abstract:

Turbulent flow with suspended, non-spherical particles can be found in nature and several industrial applications. Although turbulence with dispersed spherical particles has been studied extensively, modeling the dynamics of non-spherical particles in a turbulent flow has not been studied extensively. Motion of spherical particles in complex flows is typically captured...

Resource Type:

Masters Thesis
Probabilistic Wind Power Forecasting for Hybrid Systems

Creator:

Irmas, Cameron

Abstract:

Wind power forecasting provides valuable insights for demand response, energy market operation, and plant control optimization. Probabilistic approaches—which capture uncertainty in these complex systems by representing predictions as probability distributions—represent a growing area of research in wind energy science. However, their applications for wind-based hybrid systems, particularly those focused on...

Resource Type:

Masters Thesis
Simulating Soot Formation and Growth using a Parallel Coupled Monte Carlo Method

Creator:

Peters, Jordan

Abstract:

Small hydrocarbon particles such as soot and soot precursors pose a serious threat to human health and Earth's climate. Understanding the mechanisms by which soot particles form and grow is the first step to reducing the prevalence of these particles. Computational simulations are used to investigate combusting systems which are...

Resource Type:

Masters Thesis
Utilizing smart manufacturing information in a job shop to support job selection and processing speed decisions

Creator:

Houck, Christopher

Abstract:

Creating schedules for the job shop manufacturing system is an extremely difficult task. Although researchers have devoted a lot of attention to generating optimal solutions, these solutions are static, thus they do not update as random events occur that disrupt the system. As smart manufacturing has grown, researchers have been...

Resource Type:

Masters Thesis
Evaluating the Effect of Emotions on Student Learning using Prescriptive and Open-ended Lab Activities for a Lean Manufacturing Engineering Course

Creator:

Perez, Maritza

Abstract:

Research has shown that emotional connections during lab activities increase learning in chemistry and physics courses. However, little research has examined the effects of emotion in engineering courses, and these studies have recognized a dearth of research examining the ability of students to apply engineering concepts in real-world applications based...

Resource Type:

Masters Thesis
Additive Manufacturing of Austenitic Oxide Dispersion Strengthened Alloy Using Powder Feedstock Gas-atomized with Elemental Yttrium via Laser Directed Energy Deposition

Creator:

Yang, Seongun

Abstract:

This study investigates the microstructure and mechanical properties of an austenitic Oxide Dispersion Strengthened (ODS) steel produced by the Laser Directed Energy Deposition (LDED) process using powder feedstock atomized with elemental yttrium. The Microstructure of the samples was characterized by electron microscopy, and mechanical properties were measured using a tensile...

Resource Type:

Masters Thesis
Evaluation of Stress Corrosion Cracking of 316L Stainless Steel in FLiNaK Using the Slow Strain Rate Technique

Creator:

Quintana, Xavier A.

Abstract:

Molten salts have been targeted as a promising coolant for next generation reactors due to their high boiling point, heat capacity, and thermal conductivity. Despite these benefits, molten salt systems present unique materials compatibility issues, highlighted by the aggressive corrosion attack and dealloying typically seen on materials in these environments....

Resource Type:

Masters Thesis
Modeling hop kilning with respect to energy consumption and drying kinetics

Creator:

Thomas, Matthew W.

Abstract:

Currently, little work has been performed studying energy consumption in hop kilning. This thesis explores drying with an alternative drying schedule that extends the initially elevated drying temperature currently used by growers and examines its impact on drying time and energy use. Extending the time of the initially elevated drying...

Resource Type:

Masters Thesis
Influence of Two-Phase Fuel on Detonation Behavior

Creator:

Barlow, Dustin

Abstract:

Detonation combustion is of great interest for propulsion devices because of its potential to increase thermodynamic efficiency, reduce the weight of current gas turbine engines, and rapidly accelerate to high Mach numbers. Detonation engines might also have the ability to decrease harmful exhaust products from traditional propulsion methods. In order...

Resource Type:

Masters Thesis
A methodology for iterative design using physical test data

Creator:

Morris, Wesley T.

Abstract:

This thesis addresses a common knowledge gap that was identified amongst the Society of Automotive Engineers (SAE) competition design teams at Oregon State University. Students that join the SAE teams at Oregon State University typically do not have experience using physically collected data during a design process. This leads to...

Resource Type:

Masters Thesis
An investigation of the feasibility of a process-intensified differential temperature water-gas shift reactor with integrated Pt/Al2O3 catalyst

Creator:

Hu, Kathy Q.

Abstract:

There has been serious interest in hydrogen as a source of energy in the United States due to its capability of delivering a sustainable, carbon-free energy future. Currently, most hydrogen in the United States is produced via the steam methane reforming of natural gas, which converts methane to hydrogen through...

Resource Type:

Masters Thesis
Interactions among PMBoK Knowledge Areas in the Context of Project Management Challenges

Creator:

Khimsaria, Parth N.

Abstract:

Projects and Project Management (PM) are increasingly becoming an integral part of how businesses operate and create value. Project-oriented industries such as IT and software development, construction, health care, public sector, and universities, are expected to contribute up to $20.2 trillion USD to the Global Gross Domestic Product (GDP) by...

Resource Type:

Masters Thesis
Toward Machine Learning-Enabled Adaptivity for Humorous Robots

Creator:

Gray, Carson C.

Abstract:

Social robots benefit from a sense of humor, which requires the ability to recognize and adapt to human responses during playful interactions. Past work on humorous robots has classified audience responses with audio-based and preliminary visual-based methods following the joke punchline. Building on this progress, we conducted a survey of...

Resource Type:

Masters Thesis
Impact of Hot Isostatic Pressing Parameters on Interface Evolution in Uranium Molybdenum Monolithic Plate Fuel

Creator:

Koziol, Adam

Abstract:

The monolithic (plate type) Uranium 10 wt.\% Molybdenum (U-10Mo) fuel system is promising for a variety of applications, most notably for the replacement of highly enriched uranium (HEU) fuels with low enriched uranium (LEU) fuel in United State High Performance Research Reactors (U.S. HPRRs). Phase transformations and secondary phase formation...

Resource Type:

Masters Thesis
Soot Modeling: GPU Accelerated Direct Simulation Monte Carlo

Creator:

Lorson, Paige

Abstract:

For this project, we designed a soot modeling software to produce a full particle density function. This model uses the Direct Simulation Monte Carlo with a full conditioning particle selection method to capture soot nucleation and coagulation in a diffusion flame. We investigate the use of graphic processing units as...

Resource Type:

Capstone Project
Early Design Evaluation of See-Through Automotive A-pillar Concepts Using Digital Human Modeling and Mixed Reality Techniques

Creator:

Srinivasan, Sriram

Abstract:

Pillars in modern vehicles provide structural integrity by surrounding the windows and joining the roof with the frame. Although they protect the driver and passengers, A-pillars also create obstruction zones by limiting drivers' forward field of view leading to unforeseeable accidents or mishaps. We argue that providing a better pillar...

Resource Type:

Masters Thesis
Human Performance with Multiple UAV Systems: Use Cases and Modeling

Creator:

Uriarte, Patrick A.

Abstract:

Commercial and public safety usage of Unmanned Aerial Vehicles in the National Airspace is currently restricted by federal regulation. The Federal Aeronautics Association is interested in modifying the restrictions; however, research is needed to study the human factor and required aptitude for a single human operating multiple UAVs. This Master’s...

Resource Type:

Capstone Project
Vortex Generator Flow Control for an Upper-Surface Blown Aircraft Wing with an Extended Coanda Flap

Creator:

Kelly, Bryan R.

Abstract:

Integrated Distributed Electric Augmented Lift (IDEAL) applies upper-surface blowing in a novel way using an array of electric ducted fans (EDFs) to achieve electric short take-off and landing to meet the growing need for urban air transportation. Additional research on the use of vortex generators (VGs) to reduce flow separation...

Resource Type:

Masters Thesis
Additive Manufacturing of FeCrCoCuNi High Entropy Alloy via Laser Powder Bed Fusion and Nickel Aluminum Bronze via Laser Directed Energy Deposition

Creator:

Doyle, Ryan P.

Abstract:

High Entropy Alloys (HEA) exhibit unusual properties and are gaining interest as new materials for challenging applications in the aerospace, hypersonic and medical fields. The application of HEAs have been limited by the development of powder production at scale. A recently developed process of plasma spheroidization by 6K, inc. has...

Resource Type:

Masters Thesis
Agile Bipedal Maneuvers Optimized then Learned from Single Rigid-Body Model Dynamics

Creator:

Batke, Ryan

Abstract:

As bipedal robots move ever closer to being integrated into all manner of real world envi-ronments there is a necessity to push their dynamic capabilities to meet or exceed those of humans and animals. Advancements must be made to address ordinary challenges that arise everyday in the same environments that...

Resource Type:

Masters Thesis
Active and Passive Structural Vibration Mitigation for High-Speed Machine Tools

Creator:

Indrarto, Christopher Wilfred

Abstract:

This thesis presents novel feedback and feedforward control system design strategies for active to passive vibration mitigation of residual vibrations on high speed machine tools. Residual vibrations on high-speed machine tools are triggered when the machine axes (table) undergo large accelerations, which induce sudden inertial forces and excite the lightly...

Resource Type:

Masters Thesis
Practical Reinforcement Learning for Bipedal Locomotion

Creator:

Dao, Jeremy

Abstract:

Reinforcement learning has emerged as a popular tool for solving control tasks, with multiple works focusing on the complex and dynamic task of locomotion. However, the naive application of reinforcement learning to this problem often produces maladaptive policies that exploit the model or reward function. This results in behavior that...

Resource Type:

Capstone Project
Identification of Physical and Chemical Processes on Ignition and Burning of Live Fuels

Creator:

Fazeli, Hamid

Abstract:

Wildland fire refers to an unpredictable and uncontrollable fire that happens in wildland areas. Regardless of the beneficial impacts of wildland fires on ecosystems, the destructive impacts of wildfires on air quality, economy, public health, etc. are considerable. An essential goal in the fire community is that the wildland fires...

Resource Type:

Masters Thesis
An In Vivo Functional Evaluation, in an Avian Model, of Passive Implantable Designs to Restore Hand Function after Spinal Cord Injury

Creator:

Casebier, Justin C.

Abstract:

The surgical standard of care to partially restore grasping function after a traumatic spinal cord injury is a reconstructive tendon transfer-surgery that connects all four finger flexors to an expendable wrist extensor. While restorative, this surgery has a fundamental problem; the movement of all four fingers flexors is directly coupled,...

Resource Type:

Masters Thesis
Designing and Evaluating a User Interface for Multi-Robot Furniture

Creator:

Stoddard, Brett

Abstract:

A chair, once placed, will stay put until moved. Or will it? With the rise of technology being embeddable into everyday objects, what if that chair could move itself? Such robotic furniture has been featured in advertisements, art, and Human-Robot Interaction (HRI) research. Existing methods for operating robotic furniture have...

Resource Type:

Masters Thesis
Shear Moduli Estimates of Thermoplastic Natural Fiber Composites via Off-Axis Tensile Tests

Creator:

Johnson, Natalie N.

Abstract:

Fiber reinforced polymers have gained considerable attention due to their wide range of applications, leading to significative concerns for end-of-life recyclability and disposal. Natural fibers and recycled carbon fibers, coupled with thermoplastic matrices can provide a sustainable and environmentally friendly alternative to traditional materials. This study focused on experimental materials...

Resource Type:

Masters Thesis
The Conduction Properties of Heavily Acceptor Doped Lead Zirconate Titanate Ceramics

Creator:

Sangwan, Vyomika

Abstract:

Heavily acceptor doped Pb1.02Dx(Zr0.5Ti0.5)1-xO3 ceramics, where A is the dopant, were investigated in this research. Dopants studied included iron, magnesium and manganese at mole concentrations x ≤ 0.20. X-ray diffraction data along with scanning electron microscopy images revealed the solubility limits of these ceramics. All doped compositions exhibited a shift...

Resource Type:

Masters Thesis
Acceleration of Long-Range Ordering in NiCrFe Alloys Via Proton Irradiation

Creator:

Evered, Cole E.

Abstract:

This work explores the hypothesis that proton irradiation is a feasible alternative to simulate accelerated thermal aging for Ni2Cr long-range ordered phase formation within NiCr and NiCrFe alloys. In this study, various model alloys and commercial alloys 690 and 690+P (0.01 wt.% P) were subject to 2 MeV proton irradiation...

Resource Type:

Masters Thesis
Quasicrystal Formation, Structure and Indentation Behaviors in Pure Tantalum

Creator:

Wang, Zhengming

Abstract:

Spontaneous quasicrystal (QC) formation has not been observed in pure metals either in computation or in experiments (excluding epitaxial growth of thin atomic layers on a QC template). In this thesis work, dodecagonal QC (DDQC) grains are first discovered to spontaneously form during thermal devitrification of pure tantalum (Ta) metallic...

Resource Type:

Masters Thesis
Applications of Bayesian Optimization and Classification Surrogate Modeling to User-Guided Design

Creator:

Jetton, Cole M.

Abstract:

In engineering problems not all constraints can be explicitly written as mathematical functions. There needs to be a way integrate designer knowledge into the design process and preferably use that to guide an optimization problem. In this thesis, these constraints are modelled using classification surrogate models and integrated with Bayesian...

Resource Type:

Masters Thesis
The Processing and Microstructures of 309L Stainless Steel Clad onto Carbon Steel with Wire-fed Directed Energy Deposition

Creator:

Bozeman, Scott C.

Abstract:

Directed energy deposition and laser cladding technologies are suitable advanced manufacturing techniques for applying corrosion-resistant claddings to large carbon steel components. In this work, we clad 309L stainless steel wire onto carbon steel substrates and examine the effects of cladding parameters (laser power and travel speed) on metallurgical bonding, composition,...

Resource Type:

Masters Thesis
Geometric Optimization Methods for Mobile Systems

Creator:

Bass, Capprin J.

Abstract:

When studying robot systems, it is common to ask about optimal approaches to accomplish a given task. In the context of mobile systems, particularly biomimetic systems, optimization tasks are closely related to the relevant dynamics of locomotion. In this thesis, building on prior work from the geometric mechanics community, we...

Resource Type:

Masters Thesis
Effect of Active Trailing Edge Motion Upon Airfoil Energy Harvester

Creator:

Strahl, Jordan D.

Abstract:

The application of a flapping foil with prescribed trailing edge motion to energy harvesting in a low reduced frequency (k = fc/U∞) regime was experimentally studied. The effects of the phase and amplitude of the applied trailing edge motion upon time-variant power extraction capability have been measured and are interpreted....

Resource Type:

Masters Thesis
Characterization of Bonding Defects in Carbon Fiber-Epoxy Plates via Thermal Wave Imaging

Creator:

Jolibois, Michael

Abstract:

Thermal wave imaging (TWI), a technology based on heat conduction and radiation through materials, is a relatively new addition to current non-destructive inspections (NDI) systems. Bonding of composites, an extremely important step in manufacturing and repair of laminates, could be affected by defects originating from faulty manufacturing processes or damages...

Resource Type:

Masters Thesis
Efficiently Learning Human Preferences for Robot Autonomy

Creator:

Somers, Thane N.

Abstract:

Human-robot teams are invaluable for mapping unknown environments, exploring difficult-to-reach areas, and manipulating inaccessible equipment. However, guiding autonomous robots requires dealing with these dynamic domains while synthesizing a significant amount of data and balancing competing objectives. Current mission planning methods often involve manually specifying low-level parameters of the mission, such...

Resource Type:

Masters Thesis
Selecting Probability Distributions for Use in Complex Discrete Event Simulation Models

Creator:

Moria, Eyad A.

Abstract:

In discrete event simulation, probability distributions are used as models of various unpredictable system components. The times between equipment failures and job processing times are examples of such random system components. The commonly recommended and taught practice for selecting a probability distribution to represent a random component is a multistep...

Resource Type:

Masters Thesis
Model Predictive Control of a Phase Change Process for Wastewater Purification Application

Creator:

Anderson, Kyle S.

Abstract:

In the United States, the oil and gas extraction industry produces large amounts of highly contaminated wastewater that is seldom treated for reuse in other applications. Current wastewater storage and disposal strategies lead to contamination of valuable freshwater resources that can have negative effects on both human communities and the...

Resource Type:

Masters Thesis
Two-Color Laser Induced Fluorescence Imaging of Fluid Temperature for Free Convection and Vapor Condensation

Creator:

McAfee, Rachel

Abstract:

The development of a continuous and reliable cooling method for computer chips is an evolving subject requiring continuous research in both computer science and thermal management. Two-color laser induced fluorescence (LIF) provides a non-invasive way to investigate electronics cooling fluid behavior. Dielectric fluids are of particular interest as they allow...

Resource Type:

Masters Thesis
Automated Design of Foam Packaging Shapes

Creator:

So, David M.

Abstract:

Creating effective packaging is about finding a balance between product protection during shipping and time consumption in the design process. Given time and cost constraints, it is hard to produce sufficiently protective padding while having it not be thicker than it needs to be. This thesis describes a method to...

Resource Type:

Masters Thesis
Fouling Characterization in Hypersaline Wastewater Treatment

Creator:

Messer, Morgan S.

Abstract:

Water supplies are diminishing worldwide and by 2025 two thirds of the population could be living in regions of water scarcity (local demand for water is greater than water supply). One method to increase available water sources is to use desalination technologies to separate water from saline solutions. While desalination...

Resource Type:

Masters Thesis
Growth, Characterization, and Application of Antimony Sulfide Thin Films via a Novel Microreactor Assisted Nanomaterial Deposition for Solid State Batteries

Creator:

Chun, Bryan H.

Abstract:

The continuous development of higher performing battery materials has emerged in parallel with the development of new manufacturing processes. Nanomaterials are one solution to addressing the cycling and performance challenges that limit existing battery cells. However, many of the methods used today for nanomaterial synthesis are high temperature batch methods...

Resource Type:

Masters Thesis
Design of Ion Thruster Optics Simulator and a Neural Network Emulator

Creator:

Sable, Shital Dnyandeo

Abstract:

The grid geometry plays a vital role in the performance of gridded ion thrusters. It can dramatically impact the erosion rate and thrust. Designers push the limits of electric in-space propulsion by optimizing grid parameters through simulation. At the same time, computational models of plasma physics are intensive. A baseline...

Resource Type:

Masters Thesis
Event detection for avian and bat wildlife on wind turbine blades

Creator:

Drachnik, Nicholas

Abstract:

Countries have begun to adopt green energy initiatives requiring high percentages of power generation to come from clean energy sources. Both onshore and offshore wind energy generates reliable clean energy. Due to this, wind energy has had an exponential growth in global adoption. While wind energy is increasingly adopted by...

Resource Type:

Capstone Project
Numerical and Analytical Modeling of Temperature Evolution in Laser Processing of Materials

Creator:

Ball, Stefan R.

Abstract:

The ultimate goal of this work is to analyze and compare two predictive models of thermal profile in laser processing of materials. An analytical method that uses closed-form equations to represent a geometric model of a laser heat source will be contrasted with a commercial computational fluid dynamics code that...

Resource Type:

Masters Thesis
A Conceptual Design Tool for High-performance Wave Energy Converters for Blue Economy Applications

Creator:

Roach, Aeron L.

Abstract:

Much like wind energy in its early years, marine energy has vast potential, and wave energy converter (WEC) concepts are constantly in development. Consequently, wave energy faces many challenges for expansion and has a wide-ranging design space of WEC concepts. The large design space demands new methods for understanding the...

Resource Type:

Masters Thesis
Automated Synthesis of Metal-Organic Frameworks using Graph Grammars and Monte Carlo Tree Search

Creator:

Zhang, Hongyang

Abstract:

In this work, a fully automated approach to synthesis Metal-Organic Frameworks is presented. We use graph to represent the structure of Metal-organic Frameworks and use graph grammars which are backbone rules and functional group rules to generate metal-organic framework. For a given parameter value of the user defined metal-organic framework,...

Resource Type:

Masters Thesis
Leading Edge Separation Analysis of Oscillating Airfoil Energy Harvesters

Creator:

Ngo, Vickie

Abstract:

Oscillating foil energy harvesters are analyzed at optimal reduced frequencies (𝑘=𝑓𝑐/𝑈) to determine how the leading edge radius of curvature affects leading edge separation. The understanding of leading edge separation and its behaviors is critical to predicting the transient lift profile of an airfoil. The separation is therefore also critical...

Resource Type:

Masters Thesis
Predicting Properties of Bio-jet Fuels using Machine Learning and ATR-FTIR Spectroscopy

Creator:

Mayer, Morgan A.

Abstract:

High-potential molecules derived from biomass sources may suitably replace or supplement traditional nonrenewable hydrocarbon fuels to reduce pollution and fuel processing costs. Due to expensive and time-consuming property testing, models that predict key properties from optical data would initially vet potential additives before investment and bench-scale testing. Attenuated Total Reflection...

Resource Type:

Masters Thesis
The Influence of Fuel Characteristics on Smoldering Behavior through Porous Fuels

Creator:

Ross, Andrew H.

Abstract:

Smoldering can play a dangerous role in the ignition and spread of wildfires. Naturally occurring fuels consist of multiple layers of organic materials with varying particle sizes due to differences in decomposition stages with fuel depth, yet the influence of particle size on burning behavior is poorly understood. Previous research...

Resource Type:

Masters Thesis
Optimization & Qualification of a Liquid Engine Launch Vehicle Design Using 6DoF Simulations

Creator:

Rose, Trevor J.

Abstract:

In this work, I developed a six degree of freedom flight simulator specific to liquid engine launch vehicles. This flight simulator improves upon available software by accounting for liquid engine specific phenomena such as tank pressurization, liquid engine performance, and center of gravity modeling. Additionally, I implemented methods for optimization...

Resource Type:

Masters Thesis
A Quantitative Analysis of Simultaneous Supply and Demand Disruptions on a Multi-Echelon Supply Chain

Creator:

Kost, Austin R.

Abstract:

Modern supply chains have grown to be far more complex than their predecessors, as global trade and accessibility have opened avenues of trade that were previously impossible. As such, the inherent risk of internal and/or external disruptions impacting the performance of a supply chain has also grown due to the...

Resource Type:

Masters Thesis
Development and Testing of an Integrated Sensor Suite for Cookstove Monitoring and Evaluation

Creator:

Miller, Heather M.

Abstract:

The health and environmental impacts associated with traditional methods of household cooking and heating have driven the development and dissemination of many types of improved cookstoves and fuels. However, adoption rates, household cooking practices, and even household ventilation can directly influence the magnitude of real-world impacts. Given the highly contextual...

Resource Type:

Masters Thesis
A Novel Progressive Damage and Failure Analysis Model for Matrix Compression using 3D Continuum Damage Mechanics and Smoothed Particle Hydrodynamics

Creator:

Solanki, Satish

Abstract:

The matrix compression behavior is assumed similar to tension, and many material's elastic and damage parameters are considered equal in tension and compression but experimentally not explored. This assumption leads to unrealistic or very far from the actual behavior of the matrix under compression. Moreover, the pre-existing implemented Abaqus models...

Resource Type:

Masters Thesis
Using Digital Human Modeling to Evaluate and Improve Car Pillar Design: A Proof of Concept and Design of Experiments

Creator:

Mellon, Taylor R. P.

Abstract:

Considering human factors in early engineering design stages can improve expensive late stage processes, facilitate user safety, improve product quality and help reduce the need for physical prototyping. Currently, car pillar design (the vertical pillars between windows which connect the roof and car body) provide safety for the passengers in...

Resource Type:

Masters Thesis
One Service Robot’s Exploration of Entertainment Methods During COVID-19

Creator:

Tsai, Yao-Lin

Abstract:

The study focuses on how to use entertainment method approach to prompt people with best practices for COVID safety. During COVID times, there have been many robots deployed in public places such as social distancing enforcer or a robot that provide facial masks, but few investigations have been done to...

Resource Type:

Capstone Project
Cooling System Analysis of the Thrust Chamber

Creator:

Sazonov, Gleb

Abstract:

The purpose of the study was to analyze the possible combination of cooling systems, which are film cooling and regenerative cooling, and obtain the initial estimates of possible temperature reduction. The analysis was conducted in Ansys Fluent. The methodology includes four main steps that are the following: flow simulation, combustion...

Resource Type:

Capstone Project
Self-adaptive Subsets for Stretched and Rotated Textures in Digital Image Correlation

Creator:

Gao, Zizhan

Abstract:

Digital image correlation (DIC) uses pairs of images, one in a reference state and one after in situ manipulation of the object, to measure full-field displacements and strains by tracking the motion of small image subsets. Subset selection is always a crucial part of DIC technique as it has a...

Resource Type:

Capstone Project
Evaluation of Materials for Use in Open-Cycle Magnetohydrodynamic Power Generation

Creator:

Bowen, Michael S.

Abstract:

Recent interest in oxy-fuel combustion for carbon capture, as well as advancements in technologies such as magnetics, materials, and computational modeling has sparked renewed interest in magnetohydrodynamic (MHD) power generation. The increased temperatures of oxy-fuel combustion versus air-fuel combustion poses a challenge in the selection of materials for plasma exposed...

Resource Type:

Masters Thesis
Race Car Monocoque Design? A Loaded Question Suspension Kinematics, Loads & Sandwich Panel Optimization Methodologies

Creator:

Gray, Gabriel M.

Abstract:

As designers continue to develop the ability to improve a component or system design relative to any number of metrics, priorities and objectives, the need for advanced methodologies which focus efforts and steer design decisions to best meet the needs of the organization becomes increasingly important. This work develops such...

Resource Type:

Masters Thesis
Numerical and Analytical Evaluation of Residual Stresses in Deep Rolling

Creator:

Nelson, Dallas

Abstract:

Deep rolling is a surface finishing technique that is widely used in several industries, specifically aerospace and automotive. Extending fatigue life by inducing compressive residual stresses at and below the deep rolled surface has been the primary driving force behind this newfound popularity. Understanding the development of the residual stresses...

Resource Type:

Masters Thesis
Synthetic Lubricant Performance in Enclosed Gearbox Applications at Extreme Temperature

Creator:

Marr, Carter J.

Abstract:

The goal of this paper is to evaluate how synthetic lubricants perform in an enclosed gearbox application when compared with a proven mineral oil. This is in an effort to improve gearbox efficiency with the desired effect of lower emissions from of improved energy output from power generation. Four liquid...

Resource Type:

Masters Thesis
Determination of Mass Flow Rate through Plain Mesh Wick and Nano- Structured Mesh Wick for the Design of Thermal Compressor Systems

Creator:

Uwaoma, Ifeanyi A.

Abstract:

Wicking action refers to the movement of a liquid through a porous or a structured surface via capillary action. This phenomenon is affected by surface geometry, such as the wick thickness and pore size of the wick, as well as fluid properties, such as viscosity and surface tension of the...

Resource Type:

Masters Thesis
Effect of Laser Powder Bed Fusion Parameters and Hot Isostatic Pressing on the Microstructure and Mechanical Properties of C22 Alloy

Creator:

Yan, Dongqing

Abstract:

A nickel-based Hastelloy C22 powder with a nominal composition of Ni-21.30Cr-13.36Mo-1.92Co-2.94W-3.85Fe-0.23Mn-0.3V(wt%) and particle size distribution of D₁₀=23.8±0.3 μm, D₅₀=37.5±0.2μm, and D₉₀=59.3±1.1 μm was gas atomized to be used as a feedstock in Laser Powder Bed Fusion (LPBF). In this study, laser power and scanning speed were optimized to manufacture specimens...

Resource Type:

Masters Thesis
Design Optimization of a Structurally Flexible Wave Energy Converter with a Direct Search Algorithm

Creator:

Berrier, Austin S.

Abstract:

Several wave energy converter designs have been recently proposed that are made of flexible materials. Flexible devices are able to generate electricity by being stretched, and are intended to simplify deployment and maintenance concerns over existing wave energy devices. Due to the relative infancy of flexible wave energy converters, however,...

Resource Type:

Masters Thesis
Condensation of a zeotropic mixture, R-454C, and its individual components, R-1234yf and R-32, in microfin tubes

Creator:

Matty, Ethan P.

Abstract:

This work compares the condensation heat transfer and pressure drop for zeotropic refrigerant R-454C and its individual components, R-32 and R-1234yf, in horizontal microfin tubes. One microfin tube has a 4 mm outer diameter, 0.18 mm wall thickness, and a surface area ratio of 1.56. The second tube has a...

Resource Type:

Masters Thesis
Simulation Automation for the Evaluation of Formula Student Aerodynamic Concepts

Creator:

Sanchez, Adrian

Abstract:

The design of a competition-winning aero package must consider multiple vehicle attitudes. Aerodynamic concepts simulated in heave, pitch, roll, high-speed yaw, and low-speed yaw to design a stable and predictable aero package. The methodology automates the simulation setup process of five vehicle attitudes. The overall and subsystem force coefficients are...

Resource Type:

Masters Thesis
Environmental Sustainability During the Early Design Phase: Understanding the Uncertainty in the Use Phase, Visualization, and Automating Design Repository Curation

Creator:

Tensa, Melissa

Abstract:

The objective of this research is to support DfX considerations in the early phases of design, particularly Design for the Environment. In order to include DfX considerations, especially early in the design process, there needs to be access to knowledge and information that is usually only applicable further downstream in...

Resource Type:

Masters Thesis
Exploring the Consistency of Terminology used in Performance Measurement & Management

Creator:

Jacobsen, Malaia P.

Abstract:

Performance measurement and management (PMM) are functions used in many organizations to monitor and manage the activities of an organization. Although these functions are widely understood and applied across many types of industries and within a variety of contexts, there is no standardized terminology due to the multidisciplinary nature of...

Resource Type:

Masters Thesis
Advanced Computational Modeling Methods for Floating Offshore Wind Systems

Creator:

Devin, Michael C.

Abstract:

Floating offshore wind energy is anticipated to become a competitive source of renewable energy by the late 2020s, but the industry must reduce costs and uncertainties associated with the technology to do so. Identifying solutions to these problems frequently relies on computational modeling, which presents technical shortcomings limiting the versatility...

Resource Type:

Masters Thesis
Design, Fabrication, and Evaluation of a Novel High-Performance Resistance Heater Rod for Nuclear Thermal Hydraulic Experimentation

Creator:

Sharaf, Salem A.

Abstract:

The Accident Tolerant Fuels campaign demonstrated a need for nuclear fuel pin simulators to further research fuel and cladding combinations that can withstand off normal conditions in light water reactors. The use of a heater rod as a fuel pin simulator greatly reduces the risk involved during testing as no...

Resource Type:

Masters Thesis
The Design of a Multidisciplinary Capstone Course

Creator:

Rust, Nathan R.

Abstract:

The end goal of any educational program is to prepare a student for the challenges they will see after completion of their studies. In the realm of engineering, the pinnacle of this occurs during a student’s final Capstone course series, where students are asked to apply their various skills learned...

Resource Type:

Masters Thesis
Advanced Computational Modeling and Design of Wave Energy and Floating Offshore Wind Energy Technologies

Creator:

Mankle, Hannah L.

Abstract:

Given the immense energy potential of oshore wind and ocean waves, offshore renewable energy can significantly contribute to the renewable energy landscape. Fixed floating wind is already making strides internationally with increased electricity capacity, while floating offshore wind turbines and marine hydrokinetic (MHK) technology have significant potential that can...

Resource Type:

Masters Thesis
Measuring Instrument Precision Estimation in Destructive Testing

Creator:

Sunil Raj, Sayooj

Abstract:

The variability introduced into measurements by a measuring instrument is referred to as measurement instrument precision. Experimental procedures and analysis methods exist when measurements are repeatable and can be repeated on the same item. However, when the measurements are destructive and repeated measurements are not possible, estimating measuring instrument precision...

Resource Type:

Masters Thesis
Wave Energy From Idea, to Concept, to Converter: Structuring Methods for Design and Evaluation of Wave Energy Devices

Creator:

Trueworthy, Ali May

Abstract:

The amount of energy we use and the ways that we get that energy sit on the edge of dramatic change as the carbon budget which can keep the planet under 1.5C of global average temperature increase gets smaller (Allen, 2018). In response, we continue to research and develop renewable...

Resource Type:

Masters Thesis
Improved Lubrication Performance of Chainsaw Cutting Systems

Creator:

Sellars, Patrick V.

Abstract:

Chainsaws serve as one of the primary tools used by logging corporations, ranches, and farms for forestry management. Lubricating oil remains one of the heaviest operational expenditures for chainsaws. This largely in part due to chainsaw lubrication being a total loss system in which nearly all lubricating oil applied is...

Resource Type:

Masters Thesis
Effects of Residual CO2 and N2 on Detonation Velocity and Detonation Limits

Creator:

Glad, Harley R.

Abstract:

Detonation combustion has gained interest throughout the years because of its potential to increase thermodynamic cycle efficiency when compared to deflagration based cycles. The expected benefits result from a pressure gain during the combustion process instead of a pressure drop, as observed for deflagrations. The implementation of detonations can be...

Resource Type:

Masters Thesis
Integrative Review of Methods for Cognitive Debiasing and Applications in Design

Creator:

Han, Yu L.

Abstract:

Design is a process of decision making. Organizations that are dedicated to systematic support of the design process tend to have higher profit margins. Further, studies of system development have shown that early-stage design mistakes have a large impact on incurred costs. Therefore, it is critical to identify methods to...

Resource Type:

Masters Thesis
Mechanics and Dynamics of Low Frequency Vibration Assisted Machining

Creator:

Eren, Bora

Abstract:

This thesis presents mechanics and dynamics of Low Frequency Vibration Assisted Turning (LFV-T). First, a mechanistic model for analytical cutting force and specific cutting energy prediction is presented. Kinematics of the process is used to analyze the cut surface topography and derive the uncut chip thickness variation for various modulation...

Resource Type:

Masters Thesis
Reducing Biogeochemical Models with an Automated Reduction Method

Creator:

Klee, Emily

Abstract:

Modeling elementary chemical reactions in ocean ﬂuid dynamics simulations requires signiﬁcant computing resources, which can be diminished with model reduction techniques. Submesoscale ocean turbulence and biogeochemical reactions in the ocean occur on approximately the same time scale, 105 seconds. This similarity in time scales indicates a strong coupling between these...

Resource Type:

Masters Thesis
In-Situ Confocal Scanning Laser Microscopy and Post-Exposure Analysis of a Cu/Fe-based Oxygen Carrier Material in High-Temperature Oxidation and Reduction Environments for Chemical Looping Combustion Applications

Creator:

Nealley, W. H. Harrison

Abstract:

A Cu/Fe-spinel-based oxygen carrier designed at the National Energy Technology Laboratory was studied in order to characterize its physical and chemical behavior with cyclic oxidation and reduction treatments at 800°C for applications in chemical looping combustions. Observations were made on individual particles of the oxygen carrier in-situ using a confocal...

Resource Type:

Masters Thesis
Advancing forced draft biomass cookstove technology with computational fluid dynamics modeling

Creator:

Cassidy, Liam J

Abstract:

Today, billions of people are limited to using biomass-fueled traditional fires as a primary energy source for cooking and purification of drinking water. Reliance on open burning of biomass leads to exposure to high levels of household air pollution which has been estimated to claim over 1.5 million lives annually,...

Resource Type:

Masters Thesis
The Feasibility of Process Intensification of the Water-Gas Shift Reaction using Differential Temperature Microreactors

Creator:

Tolley, Thomas E.

Abstract:

Hydrogen is an increasingly attractive low-carbon energy carrier for a variety of stationary and mobile applications. Currently, the vast majority of hydrogen in the United States is produced via the energy intensive steam reforming of natural gas. The cost and carbon emissions associated with hydrogen production can be reduced by...

Resource Type:

Masters Thesis
Fatigue Testing and Analysis of Polymer and Composite Materials Used in Heavy-Duty Trucks

Creator:

Gahan, Kevan

Abstract:

As structural durability analysis is increasingly trusted during the design processes of the automotive industry, more complete and sophisticated modeling of material behavior under both static and dynamic loading conditions is paramount. This is especially true regarding the application of heavy-duty trucks, where modern designs contain large parts such as...

Resource Type:

Masters Thesis
Impacts of Porous Support Geometry on Membrane Performance and Energy Use in the Steam Reforming Process

Creator:

Chamorro, Davis S.

Abstract:

Increasing interest in hydrogen as a clean and efficient energy carrier has driven the need to improve its production and distribution methods. Of particular interest is the natural gas reforming process which currently accounts for 48% of hydrogen production in the United States. Existing natural gas delivery infrastructure and challenges...

Resource Type:

Masters Thesis
Data Mining a Design Repository for Automating and Validating Functional Modeling

Creator:

Mikes, Alex B.

Abstract:

The purpose of this work is to build a foundation of understanding and methodologies as the steps toward automating functional modeling. We have achieved significant progress in the automatic generation of functional representations, which can be connected at the interface of components to create a functional model. This work highlights...

Resource Type:

Masters Thesis
Temperature Evolution of Nonreacting Spark Kernels at Sub-Atmospheric Pressures

Creator:

Caplan, Daniel L.

Abstract:

In the event of a mid-flight flameout of a gas turbine engine, reignition is paramount to occupant safety. Ignition at high altitude can be challenging, due in part to the potentially lower ambient pressures. An understanding of the effects of sub-atmospheric pressures on the temperature evolution of spark kernels is...

Resource Type:

Masters Thesis
A Preliminary Methodology For Automating Functional Modeling

Creator:

Edmonds, Katherine N.

Abstract:

This thesis is the combination of two research publications working towards automating functional modeling. Functional modeling is an underutilized yet critical tool for concept generation and product design. Understanding the difficulty both novice and expert designers have in implementing functional modeling in their design process, this research sets out to...

Resource Type:

Masters Thesis

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Academic Affiliation

Mechanical, Industrial, and Manufacturing Engineering[remove]443
Language, Culture, and Society4
Wood Science and Engineering2

Advisor

Haapala, Karl R.24
Parmigiani, John15
Albertani, Roberto14
Paasch, Robert14
Tumer, Kagan14
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 2008 to 2024

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Committee Member

Hoyle, Christopher24
Squires, Nancy22
Haapala, Karl21
Porter, David18
Mullet, Kathy17
more Committee Members »

Conference Name

European Wave and Title Energy Conference1

Creator

Velayati, Mohammad2
Abhinkar, Bindiya S.1
Addison, Dylan, A.1
Aerne, Nicholas, S. J.1
Agahi, Maryam1
more Creators »

Contributor

Demirel, Onan2
Haapala, Karl R.2
Isgor, O. Burkan2
Pasebani, Somayeh2
Tabei, Ali2
more Contributors »

Date

Date range begin – Date range end

Current results range from 2007 to 2024

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Unknown 1

Decade

2020-202999
2010-2019302
2000-200941

Degree Field

Mechanical Engineering296
Industrial Engineering94
Robotics30
Materials Science22
Applied Anthropology4
more Degree Fields »

Degree Level

Master's443

Degree Name

Master of Science (M.S.)[remove]443

File Format

application/pdf7
pdf2

Language

English [eng][remove]443

License

All rights reserved421
Attribution 4.0 (CC BY 4.0)8

Location

Corvallis, Oregon, United States, (Populated Place)1
Tanzania, , Tanzania, (Administrative Boundary)1

Non-Academic Affiliation

Oregon State University. Graduate School263
Pacific Marine Energy Center5
Oregon State University. Collaborative Robotics and Intelligent Systems (CoRIS) Institute2
Linus Pauling Institute1
Oregon State University Cascades Campus1

Peer Reviewed

No440

Resource Type

Masters Thesis434
Capstone Project9

Rights Statement

In Copyright443

Subject

Microreactors11
Heat -- Transmission10
Microreactors -- Design and construction9
Computational fluid dynamics8
Robots -- Control systems8
more Subjects »

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