Search Constraints

Start Over
Filtering by: Creator Rosell, C. H. Remove constraint Creator: Rosell, C. H. Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

Search Results

  • Evaluation of copper to superconductor area ratio measurement techniques for niobium-titanium composite superconducting wire

    Creator:
    Pyon, Taeyoung
    Abstract:
    Measurement of the copper to superconductor ratio (Cu/SC) in composite superconducting wires is necessary for process control, quality assurance, and characterization of the final wire properties. A comparison has been made of three techniques for measuring the Cu/SC ratio on a set of commercial wires produced for the Superconducting SuperCollider...
    Resource Type:
    Masters Thesis
    Full Text:
    Composite Superconducting Wire Redacted for Privacy Abstract approved : William H. Warnes Measurement of

  • 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

  • Transient nonlinear deformations of viscoelastic membranes

    Creator:
    Jenkins, Christopher H. M.
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: AN ABSTRACT OF THE THESIS OF Christopher H

  • Failure analysis of pre-notched composite laminated plates under four-point bending conditions

    Creator:
    Arias Gonzales, Sergio
    Abstract:
    Ever since composite laminate technology was introduced into the aerospace and automotive industry, there has been a need to fully understand the damage progression experienced by composite laminated plates in the presence of a notch. While numerous research studies have been conducted on this matter when subjected to in-plane loads,...
    Resource Type:
    Dissertation
    Full Text:
    Bending Conditions Abstract approved: __________________________________________ Timothy C

  • Mechanics of Nb-Ti superconducting composites

    Creator:
    Guo, Zhiqiang
    Abstract:
    Mechanical behavior of Nb-Ti superconducting composites with copper matrices have been studied experimentally and theoretically. Experimental work includes extensive measurements of Cu/Nb-Ti composite system. Techniques for fine fiber testing and composite wire measurement have been developed. Experimental parameters examined in this research include geometry, hardness, Young's modulus, Poisson's ratio, yield...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: ,oercond cting Composi s William H. Warnes Mechanical behavior of Nb-Ti

  • Quality driven collaborative decision making for product development under the influence of trustworthiness

    Creator:
    Meier, Stefan
    Abstract:
    The focus of this study is the effective prioritization of customer requirements in collaborative product development. The CR priorities are often retrieved by questioning and interviewing targeted customers. But the targeted customer might not always be easily questioned, because they might not always be obvious or clearly known. If customers...
    Resource Type:
    Masters Thesis
    Full Text:
    this thesis. The author also thanks Dr. Timothy C. Kennedy and Dr. Michael H. Freilich, who both

  • 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:
    )drdn co t + 1-001 0 0(7 0 r)H(t-r-In-xl/OC2) M5(t-roi-x)drcln , where M1(,0 = 2 1 c (1-112) (L2-1

  • Large-strain softening of aluminum in shear at elevated temperature

    Creator:
    Alhajeri, Saleh N.
    Abstract:
    Pure aluminum deformed in torsion (shear) at elevated temperatures reaches a broad "peak" stress and then undergoes about a 17% decrease in flow stress with deformation to roughly 1-2 equivalent uniaxial strain. Beyond this strain the flow stress is approximately constant. The sources for this softening are unclear. The suggested...
    Resource Type:
    Masters Thesis
    Full Text:
    . Timothy C. Kennedy, Dr. William H. Wames, and Dr. R. Logen Logendran. I appreciate their time investment

  • Derivation and automatic generation of Kane's dynamical equations for mechanical manipulators

    Creator:
    Nie, Tinglin
    Abstract:
    To design and precisely control a manipulator requires developing an efficient dynamic model of the system. The present work demonstrates how this can be accomplished by employing Kane's dynamical equations. First, a detailed manual derivation of the equations of motion for a particular robot is presented in such way that...
    Resource Type:
    Dissertation
    Full Text:
    . Appreciation is also extended to the members of my Ph.D committee, Dr. Robert E. Wilson, Dr. Timothy C

  • Three-dimensional, nonlinear viscoelastic analysis of laminated composites : a finite element approach

    Creator:
    Wang, Min
    Abstract:
    Polymeric composites exhibit time-dependent behavior, which raises a concern about their long term durability and leads to a viscoelastic study of these materials. Linear viscoelastic analysis has been found to be inadequate because many polymers exhibit nonlinear viscoelastic behavior. Classical laminate theory is commonly used in the study of laminated...
    Resource Type:
    Dissertation
    Full Text:
    : Timothy C. Kennedy Polymeric composites exhibit time-dependent behavior, which raises a concern about