Search Constraints

Start Over
Filtering by: Creator Zheng, Joshua Y. Remove constraint Creator: Zheng, Joshua Y. Academic Affiliation Mechanical, Industrial, and Manufacturing Engineering Remove constraint Academic Affiliation: Mechanical, Industrial, and Manufacturing Engineering

Search Results

  • Thermal and Aerodynamic Effects of Surface Roughness Patterns on Additive Manufactured Heat Sinks

    Creator:
    Lundeen, Samuel L.
    Abstract:
    Breakthroughs in heat sink design are now limited by conventional manufacturing techniques which can only produce basic fin shapes with homogenous surface structuring. Additive Manufacturing (AM) is a potential disruptive technology for heat sink design and other convective heat transfer solutions, as surface properties can be directionally varied to maximize...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: __________________________________________________________________ Joshua Gess

  • Development of a Boiling Surface Effectiveness Parameter by Modeling and Quantifying the Net Coolant Flow Rate

    Creator:
    Harrison, Matt
    Abstract:
    Boiling dynamics and related heat transfer mechanisms have been widely studied for several decades. During that time, incredible progress has been made on quantifying bubble departure phenomena including growth rate, departure frequency, associated natural and forced convection, and radiation additions to the overall heat transfer rate. With this, the thermal...
    Resource Type:
    Dissertation
    Full Text:
    similar to that of a fin Joshua L. Gess effectiveness parameter as this quantifies the utility

  • Tracking of Melt Pool Motion Using Numerical Analysis of Laser Powder Bed Fusion

    Creator:
    Cox, Bryce
    Abstract:
    Laser Powder Bed Fusion (LPBF) is a process commonly used to create additively manufactured metal parts. The flexibility and complexity allowed by the LPBF process provides opportunity for significant advancement in multiple industries as parts can be customized in shape and function for specific needs. These benefits can be compounded...
    Resource Type:
    Dissertation
    Full Text:
    . Abstract approved: ______________________________________________________ Joshua L. Gess Laser

  • 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
    Full Text:
    Joshua L. Gess The development of a continuous and reliable cooling method for computer chips

  • A Computational Framework for Resilience-Informed Design

    Creator:
    Hulse, Daniel E.
    Abstract:
    It is desirable for complex engineered systems to perform missions efficiently and economically, even when these missions' complex, variable, long-term operational profiles make it likely for hazards to arise. It is thus important to design these systems to be resilient so that they will actively prevent and recover from hazards...
    Resource Type:
    Dissertation
    Full Text:
    Computational Framework for Resilience-Informed Design Abstract approved: Irem Y. Tumer Christopher Hoyle It

  • Bio-Inspired Design of Vehicles that Operate in Complex Environments

    Creator:
    Jackson, Danielle M.
    Abstract:
    This dissertation focuses on defining underlying mechanisms to enable the bio-inspired design of aerodynamic and/or hydrodynamic vehicles that operate within complex environments. This dissertation introduces four overarching research gaps found in current bio-inspired design research and four corresponding approach questions that guide the framework of the presented research. This research...
    Resource Type:
    Dissertation

  • Towards a Conceptual Change Model to Support Organizational Change Efforts

    Creator:
    Hille, Joshua D.
    Abstract:
    Many projects fail because employees and managers have different understandings of project "success" or "value". Other projects fail because managers are unable to effectively align organizational values with those of their employees. This problem is widely understood, but there is little empirical research that specifies the nature and effect of...
    Resource Type:
    Masters Thesis
    Full Text:
    Joshua D. Hille for the degree of Master of Science in Industrial Engineering presented on May 13, 2016

  • Non-Isotropic Fiber Reinforced Elastic Membranes for Micro Aerial Vehicle Wings

    Creator:
    Wilcox, Joshua Robert
    Abstract:
    Micro air vehicles (MAV's) and small unmanned aerial vehicles (SUAV) are remotely piloted or autonomous aircraft with a take-off mass range between 50 g and few kilograms. These vehicles, as well as natural fliers such as bats and insects, utilize a variety of elastic wing structures including thin membranes. Over...
    Resource Type:
    Masters Thesis
    Full Text:
    Aerial Vehicles AN ABSTRACT OF THE THESIS OF Joshua Robert Wilcox for the degree

  • An investigation of transition from penetration to deflection in the fracture of bi-material interfaces

    Creator:
    Strom, Joshua L.
    Abstract:
    The problem of determining whether a crack impinging on an interface will penetrate into the substrate or deflect along the interface is vital to the effective design of layered and composite material systems. Of particular interest is the transition between crack propagation by penetration through an interface and deflection along...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Joshua

  • Testing and design procedures for electric propellant pumps for suborbital bi-propellant rockets

    Creator:
    Verna-Ketel, Dominic
    Abstract:
    An electrically driven propellant pump (HALE E-Pump) was analysed and tested to determine its viability for use in a bi-propellant launch vehicle for the High-Altitude Liquid Engine (HALE) student rocket team at Oregon State University (OSU). The pump, manufactured in 2022 by students in OSU machine shops, was hydrostatically tested...
    Resource Type:
    Honors College Thesis
    Full Text:
    , Industrial and Manufacturing Engineering Joshua Gess, Committee Member, representing Mechanical, Industrial