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Filtering by: Creator Dale, A. C. Remove constraint Creator: Dale, A. C. Decade 1980-1989 Remove constraint Decade: 1980-1989 Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • A model for the mechanical behavior of irradiated mixed carbide sphere pac fuel pins

    Creator:
    George, Thomas L.
    Abstract:
    A model is developed that allows the prediction of the stress-strain distribution in a mixed carbide sphere pac fuel pin during irradiation. The model is coupled with a previously developed model for the thermal behavior of the pin. The one-dimensional (radial at various axial locations) solution is for quasi-steady pin...
    Resource Type:
    Dissertation
    Full Text:
    .3 FIGURE A.4 Fracture and Flow Stress for (U,Pu)C 117 Swelling of (U,Pu)C at Constant Temperature

  • A study of laser processed intermetallics

    Creator:
    Roub, Evangeline R.
    Abstract:
    The effects of laser processing of Ni₃Al, TiAl, Fe₃Al, and Ni₃Si on microstructure and phase composition were characterized using optical and scanning electron microscopy and X-ray diffraction analysis. It was found that laser processing resulted in melt zones of ordered phases with fine grains and microstructures. The effects of heat...
    Resource Type:
    Masters Thesis
    Full Text:
    Micrograph of Ni3A1 laser pass, 0 Hr HT, X50 a) substrate, b) Melt flow bottom, c) melt flow, d) melt zone, e

  • Design and analysis of a high speed dynamic tow carriage

    Creator:
    Lovejoy, Steven C.
    Abstract:
    A need exists to develop a high speed dynamic tow carriage used to motivate hydrodynamic specimens through a fluid environment. It is desired to simulate high Reynolds number unsteady flow about the specimen by towing the specimen through the fluid. The fluid environment is to be provided by the existing...
    Resource Type:
    Masters Thesis
    Full Text:
    Speed Dynamic Tow Carriage by Steve C. Lovejoy A THESIS submitted to Oregon State University in

  • NOx emissions for a gas turbine as a function of fuel-bound nitrogen and other variables

    Creator:
    Faye, William C.
    Abstract:
    Emissions of oxides of nitrogen from a small (15 kW) turbine generator burning high fuel bound nitrogen fuels were measured by a chemiluminescence method. Kerosene was used as the base fuel and pyridine was added to achieve different fuel bound nitrogen levels. Mixtures of 0.0%, 0.5%, and 1.0% (by weight)...
    Resource Type:
    Masters Thesis
    Full Text:
    ), the sample was first passed through a thermal converter kept at 500° C. This dis- associated the NO2

  • A comparison of experimental mode I analysis methods for the interlaminar fracture toughness characterization of graphite/epoxy composite materials

    Creator:
    Keary, Paul Edward
    Abstract:
    Three approaches for evaluating mode I interlaminar strain energy release rates in graphite/epoxy composites were compared using experimental data from double cantilever beam specimens. Expressions for evaluating strain energy release rates were arrived at based on assumptions regarding specimen geometry and material behavior. The calculations included the direct method of...
    Resource Type:
    Masters Thesis
    Full Text:
    brings up a question as to the validity of K/c as a practical design criteria. In plane strain

  • A relationship between wave dispersion and fracture strength for a composite material

    Creator:
    Ilcewicz, Larry Bert
    Abstract:
    Wave dispersion and fracture are phenomena that involve. mechanisms triggered at the scale of a material's internal structure. Experiments were performed with a candidate material to judge the hypothesis that wave dispersion measurements can be used to nondestructively predict fracture strength. Wood-based particleboard was chosen as the candidate material because...
    Resource Type:
    Dissertation
    Full Text:
    . Title: A Relationship Between Wave Dispersion and Fracture Strength for a Composite Material Abstract

  • Elastodynamic analysis of a propagating finite crack in a micropolar elastic solid

    Creator:
    Han, Seog-young
    Abstract:
    A dynamic propagation of a finite crack of opening mode in a micropolar elastic solid was investigated. By using an integral transform method, a pair of twodimensional singular integral equations governing stress and couple stress was formulated in terms of the displacement transverse to the crack, macro- and microrotations, and...
    Resource Type:
    Dissertation
    Full Text:
    Propagating Finite Crack in a Micropolar Elastic Solid Abstract approved:.Redactedfor Privacy fiimothy C

  • The application of a band variable-inertia flywheel to an urban transit bus

    Creator:
    Moosavi-Rad, Hamid
    Abstract:
    This dissertation investigates by means of computer simulation the potential of a Band Variable-Inertia Flywheel (BVIF) to store energy for an urban transit bus. Replacing both a fixed-inertia flywheel (FIF) and a continuously variable transmission (CVT), the Band Variable-Inertia Flywheel is capable of accelerating a vehicle from rest to a...
    Resource Type:
    Dissertation
    Full Text:
    . c. The reduction in the maintenance and replacement costs of the brake pads over a period of time

  • Microwave sintering of alumina-titanium cermets

    Creator:
    Wrzesinski, Wendell R.
    Abstract:
    The influence of microwave radiation on the fabrication of cermet materials has been investigated for alumina-titanium cermets with compositions ranging from 20 to 80 wt. % titanium. An industrial microwave oven was characterized and adapted to process cermet materials. Physical and mechanical property determinations were made as a function of...
    Resource Type:
    Masters Thesis
    Full Text:
    with Table 2. Alumina-titanium thermodynamics. 3Ti(c,1) + A1203(a,l) = 2A1(c,1) + 3Ti0(a) T, K DHf

  • Thermal and seismic analysis of piping systems using classical methods

    Creator:
    Nisargand, Arun L.
    Abstract:
    "Piping Design and Engineering" first published in 1963 by Grinnell, Co. is widely used by engineers to perform approximate thermal stress analysis of high-temperature piping systems. The text consists of numerical constants to calculate end reactions and maximum bending stresses in a variety of piping configurations from known properties of...
    Resource Type:
    Masters Thesis
    Full Text:
    , inches or feet b Same as above c A constant dependent upon certain material properties. Specifically