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Filtering by: Creator Alexander, David B. Remove constraint Creator: Alexander, David B. Academic Affiliation Mechanical, Industrial, and Manufacturing Engineering Remove constraint Academic Affiliation: Mechanical, Industrial, and Manufacturing Engineering

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  • The energy extraction performance of an oscillating rigid and flexible foil

    Creator:
    Totpal, Alexander D.
    Abstract:
    The aerodynamic performance of an oscillating pitching and plunging foil operating in the energy harvesting mode is investigated. Experiments are conducted in a closed-loop recirculating wind tunnel at Reynolds numbers of 24,000 to 48,000, and reduced frequencies (k = fc/u) of 0.042 to 0.083. Foil kinematics are varied through the...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Alexander D. Totpal for

  • Fully Soft 3D Printed Electroactive Fluidic Valve in Soft Hydraulic Robots

    Creator:
    Zatopa, Alexander
    Abstract:
    Soft robots are designed to utilize their compliance and contortionistic abilities to both interact safely with their environment and move through it in ways a rigid robot cannot. To more completely achieve this, the robot should be made of as many soft components as possible. Here we present a completely...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Alexander Zatopa for the degree

  • Light soaking in metal-halide perovskites

    Creator:
    Watts, C. Lowell
    Abstract:
    Despite climate change requiring the cutback of fossil fuel consumption, the world continues to increase its energy demands each year. To meet the ambitious goals outlined during the Paris Agreement in 2015, which set a goal to limit global warming to 1.5°C [1], changes in energy production methods are necessary....
    Resource Type:
    Dissertation
    Full Text:
    2.0 license [45]. The green, blue, and red, spheres are the A,B, and X atoms respectively

  • A Free Running Lubrication Comparison of Commonly Used Bar and Chain Oil

    Creator:
    Orawiec, Alexander
    Abstract:
    Chain saws are a common tool used by large logging corporations and family homesteads to manage forests, limb trees and buck lumber. A significant cost of operation is the continuous required supply of bar and chain oil. Consumers and logging corporations desire a lubricant with a high performance to cost...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Alexander Orawiec for the

  • Ground Gen Airborne Wind Energy Conversion Systems: Tools for Conceptual Design and Rapid Prototyping

    Creator:
    Muschler, Alexander
    Abstract:
    Airborne Wind Energy System (AWES) are quickly coming to fruition, with increased energy production while reducing the cost of implementation and materials. This thesis develops a new computational model for a tethered AWES and characterizes a new rapid prototyping method with the objective of supporting the design and rapid prototyping...
    Resource Type:
    Masters Thesis
    Full Text:
    THE THESIS OF Alexander Muschler for the degree of Master of Science in Mechanical Engineering

  • Equipment replacement prioritization measures : simulation and testing for a vehicle fleet

    Creator:
    Kriett, Phillip Oliver
    Abstract:
    Oregon Department of Transportation (ODOT) Fleet Services manages a fleet that in 2008 included approximately 5,000 pieces of active equipment worth $340–$390 million. Every biennium, a fixed budget is available to replace a certain amount of this equipment. This research evaluated various measures for establishing equipment replacement priorities. A model...
    Resource Type:
    Masters Thesis
    Full Text:
    committee, Dr. David Porter, Dr. B. Starr McMullen, and Dr. Roger Graham. Moreover, he would like to thank

  • Incidental Sensor Networks for Human Mobility Detection

    Creator:
    Hoover, Sylvan
    Abstract:
    Transportation systems need to get better by moving ever more people while consuming ever fewer resources. To build better transportation systems, planners need an accurate understanding of how people exercise mobility and tools to apply that understanding to the transportation system. Such an understanding can come through the development of...
    Resource Type:
    Dissertation
    Full Text:
    Sensor Networks for Human Mobility Detection Abstract approved: J. David Porter Transportation systems

  • A comparison of single runs versus multistart for simulated annealing and threshold accepting

    Creator:
    Crews, Matthew
    Abstract:
    Simulated Annealing and Threshold Accepting are two stochastic search algorithms that have been successfully used on a variety of complex and difficult problem sets. Due to their stochastic nature they are not guaranteed to produce the same result for each run. This means that these techniques actually produce a distribution...
    Resource Type:
    Masters Thesis
    Full Text:
    Runs Versus Multistart for Simulated Annealing and Threshold Accepting Abstract approved: David S

  • Performance characterization of an integrated microscale hydrogen combustor recuperator and oil heat exchanger

    Creator:
    Haley, David B. (David Brien)
    Abstract:
    Experiments on a novel, microscale hydrogen combustor heat exchanger (µCHX) are presented in this thesis. The µCHX has been designed to efficiently transfer thermal energy to a heat transfer fluid for use in desorption of hydrogen from a metal hydride storage system of a hydrogen-powered fuel cell vehicle. The experimental...
    Resource Type:
    Masters Thesis
    Full Text:
    David B. Haley for the degree of Master of Science in Mechanical Engineering presented on June 3, 2011

  • Enabling safety-informed design decision making through simulation, reasoning and analysis

    Creator:
    Jensen, David Charles
    Abstract:
    While many organizations claim to "put safety first," safety is rarely considered early in the design process when system-level architectural decisions are made. Instead, system design follows an abstraction-to-detail process to first meet functional and then performance requirements. Following this process, safety assurance occurs in the later stages of design...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF David Charles Jensen