Index Catalog // ScholarsArchive@OSU

A framework for assessing and improving the resilience of complex engineered systems during the early design process

Creator:: Mehrpouyan, Hoda
Abstract:: As modern systems continue to increase in size and complexity, they pose significant safety and risk management challenges. System engineers and much of the government research efforts are focused on understanding the attributes and characteristics that emerge from the interactions of components and subsystems. As a result, the objective of...
Resource Type:: Dissertation

A modeling and empirical study of a novel bimodal natural gas internal combustion engine with fuel compression capability

Creator:: Elgin, Robert C., III
Abstract:: Given the current abundant supply and cheap price of natural gas (NG) in the United States, there is a significant opportunity to use this fuel for transportation. However, there are few fueling stations for consumers. To address this need, a dual-mode engine has been developed where in one mode all...
Resource Type:: Masters Thesis

Alternative design considerations for a wave energy converter : a sustainability approach

Creator:: Collins, Erin
Abstract:: As the negative impacts of a fossil fueled electricity market are becoming more prevalent and destructive, the necessity for alternative energy techniques increases as well. However, before commercial implementation is underway, these alternatives must be assessed from three important perspectives: environmentally, economically, and socially, which are known as the three...
Resource Type:: Masters Thesis

An approach to reduced-order modeling and feedback control for wave energy converters

Creator:: Shoori J., Hesam E.
Abstract:: Wave energy holds great promise to be part of the alternative energy portfolio that will provide independence from fossil fuels. As wave energy converter (WEC) technologies mature, designing effective control strategies to extract maximum energy, extend device life, coordinate WEC operation within an array, or mitigate negative impacts of a...
Resource Type:: Masters Thesis

An investigation into the electrochemical removal of unwanted residual material protrusions from parts

Creator:: Bingham, Bruce C.
Abstract:: Manuscript I: The removal of residual casting material from gating has traditionally been performed by abrasive grinding techniques. However, high amounts of belt wear can occur when working with high strength alloys, especially those typically seen in the aerospace industry. An alternative machining process called electrochemical machining (ECM) uses electrolysis...
Resource Type:: Masters Thesis

Assessing steel bevel gear design alternatives for sustainability performance through unit manufacturing process modeling

Creator:: Eastwood, Michael D.
Abstract:: As the growth in demand for sustainable manufacturing continues, companies must begin to make conscious design decisions with regard to the sustainability of their products. This means balancing economics of production with environmental and social performance. Thus, design and manufacturing engineers must consider economic, environmental, and social aspects simultaneously when...
Resource Type:: Masters Thesis

CFD and Wind Tunnel Determination of Rear Wing Slot Gaps for 2014 Formula SAE Racecar

Creator:: Peterson, Curtis J.
Abstract:: The purpose of this project is to examine the effect of the slot gap spacing on a multi element rear wing. A three element rear wing is used in order to produce maximum downforce at the relatively low speed of Formula SAE competitions. These high lift configurations serve to increase...
Resource Type:: Honors College Thesis

Characterization and mitigation of train vibrations in a laboratory facility

Creator:: Atanasov, Atanas A.
Abstract:: Excessive environmental vibrations can have deleterious effects in a variety of animals. Despite the potentially detrimental effects vibrations may have on animal health and experimental results, they remain poorly understood in the animal laboratory setting. This study investigates the consequences of excessive train vibrations on the breeding success of laboratory...
Resource Type:: Masters Thesis

Convertible target platform for casting manipulation robot

Creator:: Tachella, Ramsey
Resource Type:: Presentation

Customer needs elicitation and disability simulation suit validation to benefit knowledge and methods for inclusive product design

Creator:: Armstrong, Jessica
Abstract:: Current product design methodologies are not conducive to creating inclusive products (products that meet the needs of persons with and without disabilities). In order to reduce the effort and expense involved in creating inclusive products, empathic design principles are applied to discover whether customer needs for people with disabilities can...
Resource Type:: Masters Thesis

Design and Manufacture of a Solar-Powered Snow Melter for Making Potable Water on Mt. Rainier.

Creator:: Hopple, Whitney K.
Abstract:: Every Spring and Summer, thousands of climbers attempt to summit Mt. Rainier. Many of them stop at Camp Muir, a base camp at 10,000 feet, where they can use restrooms, camp overnight, or refill water bottles before continuing their climb. Camp Muir currently uses a gas system to melt snow...
Resource Type:: Honors College Thesis

Design of a single lamina for a microchannel dialyzer with a focus on bubble removal

Creator:: Mohammadi, Mahshid
Abstract:: A microchannel-based hemodialyzer offers a novel approach to hemodialysis practice and holds many promises for improving dialysis treatment efficiency and quality of life for kidney patients. The hollow fiber hemodialyzer, a conventional dialysis device, has certain limitations including non-uniformity of the dialysate flow path which necessitates the use of a...
Resource Type:: Dissertation

Design of composite sandwich panels for a Formula SAE monocoque chassis

Creator:: Story, Robert D.
Abstract:: Physical testing of composite sandwich panels in three point bending is an increasingly important aspect of qualifying a composite monocoque for Formula SAE competition. Required stiffness and strength values have increased over the past three years, and more of the monocoque's laminates must be tested as well. As a result,...
Resource Type:: Masters Thesis

Design of robust infrastructure systems incorporating user behavior

Creator:: Piacenza, Joseph R., III
Abstract:: Infrastructure systems are a critical component supporting today's modern society. From power grids to traffic networks, we rely on these systems to perform as intended, despite the various sources of uncertainty present in their operation. Designing for system robustness can help mitigate the impact of failures caused by unexpected events....
Resource Type:: Dissertation

Design, Manufacture, and Validation of the Formula Student Pedal Assembly

Creator:: Swearingen, Colton
Abstract:: Formula Student challenges collegiate teams around the world to compete against one another in global racing competitions. Global Formula Racing (GFR) is a collaboration between Oregon State University and German at Duale Hochshule Baden- Wurttemberg Ravensburg students to build a racecar. The task assigned was to create a pedal assembly...
Resource Type:: Honors College Thesis

Determination of cutting forces with asymmetric wedged blades

Creator:: Phan, Andrew Vinh
Abstract:: Cutting operations using blades appear in several different industries such as food processing, surgical operations, gardening equipment, and so forth. As our society continues to increase our technological prowess, there is an ongoing need to better understand the underlying causes of simple tasks such as cutting so that cutting operations...
Resource Type:: Masters Thesis

Development of a Framework for Analyzing the Effects of a Micro Pin Fin Array on the Catalytic Combustion of Hydrogen in Micro-channels

Creator:: Walters, Eric M.
Abstract:: An experimental framework for investigation of the effects of Micro Pin Fin Arrays (MPFA) on the fuel oxidation efficiency of catalytic combustion is presented in this thesis. Complete combustion of the fuel is essential for operation at maximum efficiency and high standards of environmental cleanliness desired in existing microscale combustion...
Resource Type:: Honors College Thesis

Development of a Mobile Application for Android Platforms

Creator:: Hayden, Levi G.
Abstract:: The ability to develop mobile applications for smartphones and tablets is an increasingly valuable skill in today’s labor market. This thesis details the development of the mobile application Drone Drop from beginning to finish. I first describe the background research conducted to learn about programming languages and other tools used...
Resource Type:: Honors College Thesis

Dynamics and control for spring-mass legged robots

Creator:: Vejdani Noghreiyan, Hamid Reza
Abstract:: The objective of this study is to propose control strategies for legged robots to walk and run naturally like humans and animals. To achieve this goal, we use the spring-mass model for the legged robots to be able to create the same dynamics in the leg as humans and animals....
Resource Type:: Dissertation

Effects of Channel and Ratchet Geometry on Passive Pumping in an Open-ended channel Configuration

Creator:: Daniels, Mitchell A.
Abstract:: Modern electronics have created increased demand for innovative cooling solutions. Typical forced convective cooling systems consist of pumps that circulate cooling fluid. However pumps can be unwieldy for many applications. This research is a continuation of work done at Oregon State University and Auburn University on the passive pumping of...
Resource Type:: Honors College Thesis

Engineering Design Matrix for Carbon Fiber Monocoque Chassis Selection

Creator:: Zuck, Austin L.
Abstract:: The Formula Society of Automotive Engineers (FSAE) has provided a platform for teams like Oregon State’s own Global Formula Racing Team (GFR) to produce a formula style race car and compete with other schools across the world. The GFR team has used the same carbon fiber monocoque chassis since the...
Resource Type:: Honors College Thesis

Evaluating complex engineered systems using complex network representations

Creator:: Haley, Brandon M.
Abstract:: This thesis is the combination of two research publications working toward a unified strategy in which to represent complex engineered systems as complex networks. Current engineered system modeling techniques segment large complex models into multiple groups to be simulated independently. These methods restrict the evaluations of such complex systems as...
Resource Type:: Masters Thesis

Evaluation of Abaqus for simulating quasi-static Mode III shear of edge notched carbon fiber reinforced polymer panels

Creator:: Hyder, Imran
Abstract:: The ability to engineer stiffness and strength in any desired direction make composites an ideal material candidate for various applications when compared to their traditional isotropic counterparts. In spite of this, the ability to model the material response in composites has yet to be fully explored. Composite research largely focuses...
Resource Type:: Masters Thesis

From running birds to walking robots : optimization as a unifying framework for dynamic bipedal locomotion

Creator:: Hubicki, Christian M.
Abstract:: Bipedal locomotion is a complex phenomenon to understand and control, making it difficult for legged robots to achieve the speed, agility, efficiency, and robustness of their animal counterparts. This thesis argues for the use of numerical optimization to investigate and implement bipedal control as it applies to biology, dynamical models,...
Resource Type:: Dissertation

Grasping complex casting shapes with an underactuated parallel jaw gripper on an industrial robot

Creator:: Carpenter, Ryan Joseph
Abstract:: Steel foundries are in great need of automation as current operations involve many hazardous manual tasks. Automating foundry operations is very challenging due to the variety of tasks that must be performed on physical objects that vary significantly in size, shape, and weight. This thesis focuses on robotically automating the...
Resource Type:: Masters Thesis

Heat transfer during the piston-cylinder expansion of a gas

Creator:: Rodrigues, Matthew Jose
Abstract:: The expansion of a gas within a piston-cylinder arrangement is studied in order to obtain a better understanding of the heat transfer which occurs during this process. While the situation of heat transfer during the expansion of a gas has received considerable attention, the process is still not very well...
Resource Type:: Masters Thesis

Improving robotic grasping performance using machine learning techniques

Creator:: Goins, Alex Keith
Abstract:: Robots are being utilized in ever more complex tasks and environments to help humans with difficult or dangerous tasks. However, robotic grasping is still in its infancy and is one of the limiting factors which prevent the deployment of robots in the home and other assisted living scenarios. Traditional methods...
Resource Type:: Masters Thesis

Influence of subset size, shape and orientation on texture based digital image correlation

Creator:: Cui, Jianqing
Abstract:: Digital Image Correlation(DIC) is one of full-field strain measurement techniques devel- oped in recent decades, which has been well-demonstrated to conduct the mechanical properties study of solid materials, by collecting data using digital cameras. X-ray to- mography(CT) imaging helps the correlation techniques expanded to three dimensional investigation of materials, known...
Resource Type:: Masters Thesis

Knowledge Management and Organization of the Design/Build/Fly Competition and the Capstone Senior Design Class

Creator:: Royce, Anna M.
Abstract:: The Oregon State University chapter of American Institute of Astronautics and Aeronautics competed in the Design/Build/Fly competition for the second time during the 2013/2014 school year. This chapter began at Oregon State in 2012 and still lacks an organized management system for the Design/Build/Fly team that could allow OSU to...
Resource Type:: Honors College Thesis

Lift and drag characteristics of flexible pitching and heaving wings

Creator:: Rushen, Jesse
Abstract:: There is a pressing need for Micro Air Vehicles (MAV) that are light, powerful, and efficient to perform military reconnaissance missions and search and rescue operations. These MAVs have length scales on the order of 10 cm, where traditional steady flight wing designs perform poorly. An alternative flight mechanism is...
Resource Type:: Masters Thesis

Microchannel extraction of Te⁴⁺ from a stream of CdTe via MIBK in supported liquid membrane

Creator:: Liburdy, Heather Johnson
Abstract:: A new technique is developed to recover elemental tellurium (Te) from cadmium telluride (CdTe) which is abundantly available in photovoltaic semiconductor waste. The method is based on microchannel fluid flow with the use of a supported liquid membrane (SLM) between the donor (feed) and acceptor (strip) channels. A predictive theoretical...
Resource Type:: Masters Thesis

Multiagent learning for locomotion and coordination in tensegrity robotics

Creator:: Iscen, Atil
Abstract:: Tensegrity structures are composed of pure compressional elements that are connected via a network of pure tensional elements. The concept of tensegrity promises numerous advantages to the field of robotics. Tensegrity robots are, however, notoriously difficult to control due to their oscillatory nature and nonlinear interaction between the components. Multiagent...
Resource Type:: Dissertation

Numerical design of a high-flux microchannel solar receiver

Creator:: Rymal, Charles
Abstract:: This thesis discusses the design of several microchannel solar receiver devices for use in CSP (concentrated solar power) using CFD (computational fluid dynamics) simulations. The goal is to demonstrate that, by taking advantage of the higher heat transfer coefficienct of microchannels, solar receivers can achieve higher efficiency than current receiver...
Resource Type:: Masters Thesis

Optimal control of an underactuated bipedal robot

Creator:: Jones, Mikhail S.
Abstract:: Bipedal robots represent a unique class of control problems that combine many of the most difficult elements of nonlinear control. These robots are typically designed to be mobile and as such have limited energy and actuator authority making efficiency a prime concern. Unlike wheeled robots, legged robots must transition between...
Resource Type:: Masters Thesis

Preserving the Planar Dynamics of a CompliantBipedal Robot with a Yaw-Stabilizing Foot Design

Creator:: Abate, Andrew M.
Abstract:: The ATRIAS agile humanoid robot, along with a number of other spring-mass walking machines, currently have two instabilities: one resulting from inertial forces on the torso which cause the robot to spin like a top, and another resulting from stiff ground collisions which cause chattering of the point-contact toes. This...
Resource Type:: Honors College Thesis

The Design, Manufacturing, and Testing of the 2014 Side-Pods for the Global Formula Racing Vehicle

Creator:: Volk, Austin R.
Abstract:: For many years, engine overhearing has been the major cause for vehicle breakdowns and engine malfunctions for most teams in Endurance events at Formula Society of Automotive Engineers (FSAE) Series competitions. Additionally, with a growing importance of aerodynamics to the overall success of the Global Formula Racing at these events,...
Resource Type:: Honors College Thesis

The effects of ocean variability and breaking waves on wave energy converter reliability and survivability

Creator:: Brown, Adam
Abstract:: The reliability and survivability of a wave energy converter (WEC) is highly dependent on the variability and non-linearity of the ocean itself. Ocean variability occurs on many time scales. Climate variability occurs decade-to-decade, and year-to-year in the number and intensity of winter storms. Seasonal variation of wave height and period...
Resource Type:: Dissertation

Theoretical and implementation improvements for difference evaluation functions

Creator:: Colby, Mitchell Kataichi
Abstract:: Multiagent learning with cooperative coevolutionary algorithms is a critical area of research, and is relevant to many real-world applications including air traffic control, distributed sensor network control, and game-theoretic applications such as border patrol. A key difficulty in multiagent learning is the credit assignment problem, where the impact of each...
Resource Type:: Dissertation

Utilizing the thermodynamic properties of E85 to increase the specific efficiency of a high specific output single cylinder Formula SAE engine

Creator:: Duncan, Derek N.
Abstract:: Formula SAE is a collegiate engineering competition that has participants from around the globe. Of the 1000 points available throughout the event, 100 (10%) are dedicated to the fuel efficiency of the student built race cars. Competition rules allow either gasoline or E85, a mix of 85% ethanol and 15%...
Resource Type:: Masters Thesis

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