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Filtering by: Creator Higgins, C. W. Remove constraint Creator: Higgins, C. W. Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • Design, analysis, and validation of composite c-channel beams

    Creator:
    Koski, William C.
    Abstract:
    A lightweight carbon fiber reinforced polymer (CFRP) c-channel beam was previously designed using analytical theory and finite element analysis and subsequently manufactured through a pultrusion process. Physical testing revealed the prototype did not meet the bending and torsional stiffness of the beam model. An investigation revealed that the manufactured prototype...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF William C

  • 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
    Full Text:
    : Jonathan W. Hurst Bipedal robots represent a unique class of control problems that combine many of the

  • Fused Filament Fabrication of Filled Polymers for Metal Additive Manufacturing

    Creator:
    Barmore, Brenton
    Abstract:
    Additive manufacturing (AM) is a relatively new manufacturing technique that can create high complexity parts out of many materials in low volume. The fused filament fabrication (FFF) is the lowest cost AM process and is capable of producing only thermoplastic components. Powder injection molding (PIM) is a high volume low...
    Resource Type:
    Masters Thesis
    Full Text:
    . Higgins of Oregon State University, the members of my thesis committee. Fellow graduate students Kunal

  • Hydroelastic modeling of a wave energy converter using the arbitrary Lagrangian-Eulerian finite element method in LS-DYNA

    Creator:
    Meicke, Stephen A.
    Abstract:
    This thesis investigates the applicability of the finite element method to model wave energy converter (WEC) hydroelasticity using LS-DYNA. The proposed methodology uses the Arbitrary Lagrangian-Eulerian formulation to model Fluid-Structure Interaction (FSI) between the WEC and the fluid elements. This formulation allows for time-domain modeling of higher order effects such...
    Resource Type:
    Masters Thesis
    Full Text:
    ............................................................................................ 64 Appendix C – Fast Gravity Application in LS-DYNA

  • Experimental study of subcooled water spray cooling using flow symmetric micro-structured surfaces

    Creator:
    Tulchinsky, Alex M.
    Abstract:
    Spray impingement cooling has been shown to be a leading candidate for future high heat flux cooling applications. In general, spray cooling curves consist of three heat flux regimes; single-phase, two-phase and critical heat flux (CHF). CHF is considered the design limit for almost all two-phase cooling applications, as a...
    Resource Type:
    Masters Thesis
    Full Text:
      32 5.75 ,3 2.5 0.35 "2 32 " 4.79 10 f fg p f w fg f f g q d h C T T hQ d

  • Performance and flow stability characteristics in two-phase confined impinging jets

    Creator:
    Sabo, Michael D.
    Abstract:
    Advances in electronics fabrication, coupled with the demand for increased computing power, have driven the demand for innovative cooling solutions to dissipate waste heat generated by these devices. To meet future demands, research and development has focused on robust and stable two-phase heat transfer devices. A confined impinging jet is...
    Resource Type:
    Masters Thesis
    Full Text:
    m m 95 00 -1 10 ,0 00 1. 5 - 4 C on f. E li so n an d W eb b [1 1] W at er 0. 25 -0

  • The Global Consumption Speeds of Premixed Large-Hydrocarbon Fuel/Air Turbulent Bunsen Flames

    Creator:
    Fillo, Aaron Jesse
    Abstract:
    Large-hydrocarbon fuels are used for ground and air transportation because of their high energy-density and will be for the foreseeable future. However, combustion of large-hydrocarbon fuels in a turbulent environment is poorly understood and difficult to predict. The turbulent flame speed, which is the velocity at which a flame front...
    Resource Type:
    Masters Thesis
    Full Text:
    large-hydrocarbon fuels. c©Copyright by Aaron Jesse Fillo December 2, 2016 All Rights Reserved

  • Geometric Chatter Stability Index for Milling and Modeling of Chip Pulling Effect

    Creator:
    Maulimov, Mukhtar
    Abstract:
    Prediction and mitigation of chatter vibrations in machining operations and optimizing overall machining mechanics are crucial for achieving greater productivity and manufacturing efficiency. This thesis first explores effect of directional relationships on chatter stability in milling process. Based on the directional relationships, a geometry-based chatter stability index (CSI) is proposed...
    Resource Type:
    Masters Thesis
    Full Text:
    .................................................................. 32 Figure 2.15 Frequency response functions of (a) fixture x-axis, (b) fixture y-axis, (c

  • Design Automation for 3D Circuits

    Creator:
    Velayati, Mohammad
    Abstract:
    Traditional electronic systems are usually fabricated via printed circuit boards (PCBs). In a regular PCB, the electronic components are placed and mounted on a two-dimensional board. Such a component layout limits the freedom in the component placement process which results in larger electronic devices. With the use of Additive Manufacturing...
    Resource Type:
    Masters Thesis

  • Design automation for 3D circuits

    Creator:
    Velayati, Mohammad
    Abstract:
    Traditional electronic systems are usually fabricated via printed circuit boards (PCBs). In a regular PCB, the electronic components are placed and mounted on a two-dimensional board. Such a component layout limits the freedom in the component placement process which results in larger electronic devices. With the use of Additive Manufacturing...
    Resource Type:
    Masters Thesis