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Filtering by: Creator Dick, R. P. Remove constraint Creator: Dick, R. P. Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering Language English [eng] Remove constraint Language: English [eng]

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  • Condensation of a zeotropic mixture, R-454C, and its individual components, R-1234yf and R-32, in microfin tubes

    Creator:
    Matty, Ethan P.
    Abstract:
    This work compares the condensation heat transfer and pressure drop for zeotropic refrigerant R-454C and its individual components, R-32 and R-1234yf, in horizontal microfin tubes. One microfin tube has a 4 mm outer diameter, 0.18 mm wall thickness, and a surface area ratio of 1.56. The second tube has a...
    Resource Type:
    Masters Thesis
    Full Text:
    Mixture, R-454C, and its Individual Components, R-1234yf and R-32, in Microfin Tubes by Ethan P. Matty

  • Evaluation of Materials for Use in Open-Cycle Magnetohydrodynamic Power Generation

    Creator:
    Bowen, Michael S.
    Abstract:
    Recent interest in oxy-fuel combustion for carbon capture, as well as advancements in technologies such as magnetics, materials, and computational modeling has sparked renewed interest in magnetohydrodynamic (MHD) power generation. The increased temperatures of oxy-fuel combustion versus air-fuel combustion poses a challenge in the selection of materials for plasma exposed...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________________________________ David P. Cann C. Rigel Woodside Abstract: Recent interest in oxy-fuel combustion for carbon

  • Characterization of Two Novel Machining Processes for Difficult to Machine Materials

    Creator:
    Doran, Michael P.
    Abstract:
    New materials with superior mechanical properties, such as increased strength and hardness, have been developed to allow for new and improved products. However, the mechanical properties that make these materials useful also makes them difficult to process using conventional methods. New machining processes need to be developed to generate products...
    Resource Type:
    Masters Thesis
    Full Text:
    THE THESIS OF Michael P. Doran for the degree of Master of Science in Mechanical Engineering

  • Using Digital Human Modeling to Evaluate and Improve Car Pillar Design: A Proof of Concept and Design of Experiments

    Creator:
    Mellon, Taylor R. P.
    Abstract:
    Considering human factors in early engineering design stages can improve expensive late stage processes, facilitate user safety, improve product quality and help reduce the need for physical prototyping. Currently, car pillar design (the vertical pillars between windows which connect the roof and car body) provide safety for the passengers in...
    Resource Type:
    Masters Thesis

  • Fatigue Testing and Analysis of Polymer and Composite Materials Used in Heavy-Duty Trucks

    Creator:
    Gahan, Kevan
    Abstract:
    As structural durability analysis is increasingly trusted during the design processes of the automotive industry, more complete and sophisticated modeling of material behavior under both static and dynamic loading conditions is paramount. This is especially true regarding the application of heavy-duty trucks, where modern designs contain large parts such as...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ John P. Parmigiani As structural durability analysis is increasingly trusted during the

  • Investigation into the role of strength and toughness in composite materials with an angled incident crack

    Creator:
    Grimm, Brian A.
    Abstract:
    Understanding the mechanical behavior of composite materials requires extensive knowledge of fracture behavior as a crack approaches an interface between the bulk material and the reinforcement structure. Overall material toughness can be greatly influenced by the propensity of an impinging crack to propagate directly through the substrate or deflect along...
    Resource Type:
    Masters Thesis
    Full Text:
    Toughness in Composite Materials with an Angled Incident Crack Abstract approved John P

  • Dielectric Properties of Perovskite Ceramics Based on BaTiO3 and Bi(Mg1/2Ti1/2)O3

    Creator:
    Sundahl, Christopher S.
    Abstract:
    The properties of (1-x)BaTiO3-xBi(Mg1/2Ti1/2)O3 (BT-BMT) ceramics were fabricated from reagent-grade ceramic powders by solid-state methods and investigated for solubility, relative permittivity, dielectric loss, polarization, and electromechanical strain. The solubility limit was found to be between x = 0.3 and 0.4. Ba-deficient samples were fabricated, corresponding to stable single-phase compositions; these...
    Resource Type:
    Honors College Thesis
    Full Text:
    1000 1200 1400 1600 1800 R e la ti v e P e rm it ti v it y 0 100 200 300 400 500 600 0 0.02

  • Experimental Classification of Intralaminar Matrix Compression Damage Propagation in Carbon Fiber Reinforced Polymers

    Creator:
    Daniels, Mitchell Alan
    Abstract:
    Composites often are able to carry more load after damage due to the structure of laminates. In addition, damage can be difficult to detect in composites compared to homogeneous materials. Understanding the behavior of composite material after damage is vital for composite structural design. Currently, experimental methods exist for classifying...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________ John P. Parmigiani Composites often are able to carry more load after damage due to the

  • 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:
    : _____________________________________________________________________ John P. Parmigiani The problem of determining whether a crack impinging on an

  • Experimental characterization of saw chain cutting performance

    Creator:
    Otto, Andrew W.
    Abstract:
    Chainsaw users value cutting performance and safety. Knowledge of the forces exerted during sawing are necessary to understand and improve the cutting performance of saw chain. Additionally, cutting forces can be used to form metrics for evaluating performance tradeoffs when using a safety (i.e. low-kickback) saw chain versus a standard...
    Resource Type:
    Masters Thesis
    Full Text:
    changing predictor variable magnitude P re d ic to r F o rc e High-Force Mid-Force Low-Force