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  • A study of the characteristics of oscillatory surface instabilities leading to droplet formation

    Creator:
    Daniels, Brian J.
    Abstract:
    The characteristics of the free surface in an orifice driven by a periodic forcing function have been studied both theoretically and experimentally. In the theoretical study, two wall boundary condition cases were examined: 1) the radial velocity at the wall of the orifice is zero; and 2) the axial velocity...
    Resource Type:
    Masters Thesis
    Full Text:
    ................................................................................... 1 2. LITERATURE REVIEW ........................................................................ 4

  • Fracture energies of Zircaloy and some zirconium alloys

    Creator:
    Rawers, James C.
    Abstract:
    The fracture mechanics of Charpy V-notch specimens of Zircaloy-4 and phosphorus contaminated Zircaloy-4 were investigated. Three-point bend and impact tests with Charpy V-notch samples provided an efficient and economical method of fracture evaluation. Fracture failure was monitored by the force-displacement curve. Failure was initially analyzed using fracture toughness values as...
    Resource Type:
    Dissertation
    Full Text:
    Zircaloy-4 and phosphorus contaminated Zircaloy-4 were investigated. Three-point bend and impact tests

  • 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:
    ........................................................................... 4 1.3.3 Comparison of Composite Materials in Beams ....................................... 6 1.4

  • Predicting Properties of Bio-jet Fuels using Machine Learning and ATR-FTIR Spectroscopy

    Creator:
    Mayer, Morgan A.
    Abstract:
    High-potential molecules derived from biomass sources may suitably replace or supplement traditional nonrenewable hydrocarbon fuels to reduce pollution and fuel processing costs. Due to expensive and time-consuming property testing, models that predict key properties from optical data would initially vet potential additives before investment and bench-scale testing. Attenuated Total Reflection...
    Resource Type:
    Masters Thesis
    Full Text:
    , farnesane, and RJ-4 at addi- tive relevant concentrations. The properties in the holdout set were predicted

  • The theoretical design and construction of a .25 calibre automatic repeating rifle

    Creator:
    Winniford, John Franklin
    Abstract:
    In the construction of a rifle for sporting or target work there are several conditions to be met. In the first place the rifle must be made to balance easily.at all times, whether the magazine is full of loaded cartridges or is empty. In all cases the barrel of the...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    at present b, an annu- facturer or inventor of sm. 11 rifles. The primary problem in the design of

  • Crack Penetration and Deflection Behavior at Interfaces

    Creator:
    Alam, Mahabub
    Abstract:
    This study computationally and experimentally examines the mechanisms of crack penetration, deflection and the transition between penetration and deflection. The finite element analysis based computational modeling work used strength-and-energy based cohesive-zone approach to study the effect of dimensionless parameters (e.g., interfacial incident angle, fracture-length scale, and normalized toughness) on penetration/deflection...
    Resource Type:
    Dissertation
    Full Text:
    two different kind of solvent adhesives Weld-On 4 and Weld-On 16 were used as interfaces that have

  • An experimental study of friction factors and mixed convection in the thermal entrance region of vertically narrow, horizontal rectangular channels for different heating conditions and aspect ratios

    Creator:
    Hong, Seung-Ho
    Abstract:
    Heat transfer and fluid mechanical behavior of water flowing horizontally in vertically-narrow rectangular channels was studied in this work. Friction factor and Nusselt number variations were determined experimentally for four different wall heating conditions, and for aspect ratios(height to width) of 5, 4, 3, 2, and 1. Wall heating conditions...
    Resource Type:
    Dissertation
    Full Text:
    experimentally for four different wall heating conditions, and for aspect ratios(height to width) of 5, 4, 3, 2

  • An Information Modeling Framework for Support of Sustainable Manufacturing System Design Decision Making

    Creator:
    Shankar Raman, Arvind
    Abstract:
    Manufacturing technology has continuously evolved and advanced over the past century; this has led to an increase in the production of consumer and industrial goods driven by simultaneous growth in population and wealth. Despite the resulting economic and labor growth, environmental impacts of manufacturing have increased dramatically due to the...
    Resource Type:
    Dissertation
    Full Text:
    process flows composed of UMPs, which is demonstrated for a discrete part manufacturing system; and (4

  • A design framework for identifying automation opportunities

    Creator:
    Nagel, Robert Lewis, 1982-
    Abstract:
    Since the Industrial Revolution, automated systems have increasingly become a part of everyday life. Automated systems range in scale and scope from simple assists to complete robotic replacements. Inexpensive integrated circuits, sensors and microprocessors have allowed automated systems to become smaller, cheaper and more prevalent. Identifying appropriate opportunities for automation,...
    Resource Type:
    Dissertation
    Full Text:
    automation opportunities from the manual ac- tions of the customer. (4) Synthesize solutions to the

  • A product development process measurement methodology applied to small manufacturing companies

    Creator:
    Schlegel, Stephen C.
    Abstract:
    The implementation of concurrent engineering into many large companies has greatly improved their product development processes. These companies have seen significant gains in quality and customer satisfaction with reduced product costs, defects, and time-to-market (Lake, 1992). Many large companies have successfully employed this relatively new product development philosophy. However, smaller...
    Resource Type:
    Masters Thesis
    Full Text:
    ), VND(5), SM(1) 4) Offices and Facilities 5) Equipment 6) Materials ( 1) Product Unit Cost