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Filtering by: Creator Harris, John F. Remove constraint Creator: Harris, John F. Committee Member Squires, Nancy Remove constraint Committee Member: Squires, Nancy Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • 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
    Full Text:
    : Characterization and Mitigation of Train Vibrations in a Laboratory Facility Abstract approved: John P

  • Reverse engineering, modeling, and redesign of a vibratory conveyor

    Creator:
    Foglesong, Timothy J.
    Abstract:
    Some successful products are still developed and produced without the benefit of modern design techniques. One such product is a vibratory conveyor that has been developed largely through prototype iteration. The manufacturer has collaborated with Oregon State University to introduce model-based design into the development process. This research details a...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: John Parmigiani Some successful products are still developed and produced without the benefit

  • Design and Testing of a Tethered, Coaxial Rotor Micro Air Vehicle

    Creator:
    Shryer, Jacob R.
    Abstract:
    Unmanned Aerial System (UAS) technology is a rapidly developing technological marketspace. This thesis focuses on micro, tethered, coaxial UASs and the development of an electrically-tethered observation platform (ETOP). The thesis details the current status of the technology as well as current products on the market. Stability considerations, critical when adding...
    Resource Type:
    Honors College Thesis
    Full Text:
    Engineering John Selker, Committee Member, representing Biological and Ecological Engineering, Col- lege of

  • Theoretical modeling and experimental analysis of the flight mechanics of Lepidoptera

    Creator:
    Wilson, Tyler
    Abstract:
    Development of micro air vehicles has led to a strong interest in the biomechanics of flapping fliers such as bats, birds, and insects, due to their ability to perform extreme unsteady maneuvers and fly in confined spaces. Determining the methods and mechanisms used by these fliers is a valuable source...
    Resource Type:
    Masters Thesis
    Full Text:
    given time t can be calculated using the following equation: θt = θA sin (2πf + θp) + θm (3.1

  • 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
    Full Text:
    . Jay Swift for helping with injector dead time measurement. John Sprainis for building the in

  • 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
    Full Text:
    acknowledge my co-advisor, Dr. John Singler, for helping me to better understand the concepts of model

  • Percent Area Visual Obscuration of F1 Racecar Canopies

    Creator:
    Jennings, Alex
    Abstract:
    Considering human product interactions early and often in the engineering design process may improve product quality, facilitate user safety, reduce time to market, decrease or eliminate the need for costly physical prototypes, and reduce expensive late stage design changes. Currently, F1 race cars do not include a cockpit canopy to...
    Resource Type:
    Masters Thesis
    Full Text:
    ......................................................... 28 3.3.1 Virtual Prototype of F-1 Car ...................................................... 28

  • Lift Enhancement of Pliant Wings Through Bio-Mimicry

    Creator:
    Osterberg, Nathaniel Brent
    Abstract:
    Flexible aerodynamic surfaces have been shown to favorably influence flight characteristics at low Reynolds numbers by increasing lift, angle of attack at stall, and resistance to perturbation. The objective of the research presented within this thesis is to investigate the influence of two aspects of flight observed in biological flyers,...
    Resource Type:
    Masters Thesis
    Full Text:
    aspiration to be more like him has guided most of what I have done in my young adult life - Thank you John

  • On the optimization of performance in fractal-like branching microchannel heat transfer devices

    Creator:
    Heymann, Douglas Benjamin
    Abstract:
    Fractal-like branching microchannel flow networks have been found to improve wall temperature uniformity and decrease both pressure drop and flow power compared to arrays of straight microchannels. The present study seeks to maximize the benefits of fractal-like branching channels by means of a gradient-based optimization algorithm. The algorithm identifies the...
    Resource Type:
    Dissertation
    Full Text:
    level index ks,f Thermal conductivity of the solid (s) or fluid (f) (W/m-K) L Channel length (m) m

  • Optimal High-bandwidth Non-collocated Control of Ball-screw Drives

    Creator:
    Dumanli, Alper
    Abstract:
    This work presents a novel optimal control strategy for precision motion control of flexible ball-screw feed drives. Typically, ball-screw feed drive control relies on state feedback taken both from motor and the load sides. The controller designed in this thesis is based on the non-collocated framework, where all the feedback...
    Resource Type:
    Masters Thesis
    Full Text:
    obtained as: { } ( ) ( ) { } ( ) ( ) ( ) 0 0 0 0 0 ( ) 2 ( ) 2 s Te j j T AF u t j A G j F y t