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Filtering by: Creator Prineas, J. P. Remove constraint Creator: Prineas, J. P. Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • Sensitivity of Hashin damage parameters for notched composite panels in tension and out-of-plane bending

    Creator:
    Wright, Thomas J.
    Abstract:
    When using Finite Element Analysis (FEA) to model notched composite panels, the values of certain material properties can have a great effect on the outcome of the simulation. Progressive damage modeling is used to model how a composite structure will fail, and how that failure will affect the response of...
    Resource Type:
    Masters Thesis
    Full Text:
    panels in tension and out-of-plane bending AN ABSTRACT OF THE THESIS OF Thomas J

  • Adhesive Properties Subject to Variation in Temperature, Thickness, and Working Time

    Creator:
    Aerne, Nicholas, S. J.
    Abstract:
    Adhesive use is becoming increasingly common in manufacturing processes. The advantage of adhesives are light weight components, non-destructive fastening techniques and distribution of loads over the applied bond region. Modeling the behavior of adhesive bond lines in fastening joints can help in the design process to make an optimized joint,...
    Resource Type:
    Masters Thesis
    Full Text:
    John P. Parmigiani Adhesive use is becoming increasingly common in manufacturing processes

  • 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 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:
    , P. Cmanho, J. Xavier, C. Davila and A. Marques, "Measurement of resistance curves in the

  • Experimental and finite-element analysis of stress distributions near the end of reinforcement in partially reinforced glulam

    Creator:
    Kirlin, Chad P.
    Abstract:
    Recently, fiber-reinforced plastics (FRP lamina) have been applied to glued-laminated (glulam) timber for the purpose of improving bending strength and stiffness. Initially, full length reinforcement using FRP lamina was developed. However, the cost of FRP lamina is a significant portion of the total cost of reinforced glulam. Therefore, it is...
    Resource Type:
    Masters Thesis

  • Fracture toughness of void-site-filled skutterudites

    Creator:
    Eilertsen, James S.
    Abstract:
    Thermoelectric materials are playing an increasingly significant role in the global effort to develop sustainable energy technologies. Consequently, the demand for materials with greater thermoelectric efficiency has stimulated the development of state-of-the-art interstitially doped skutterudite-based materials. However, since intermetallics are often embrittled by interstitial substitution, optimal skutterudite-based device design, manufacture,...
    Resource Type:
    Masters Thesis
    Full Text:
    , B. Gibbons, J. Kruzic, E. Minot, M. Subramanian, J. Tate, W. Warnes, and P. Watson; the Kruzic

  • 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

  • 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:
    : __________________________________________________________________ John P. Parmigiani Chainsaw users value cutting performance and safety. Knowledge of

  • 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:
    . Abstract approved: _______________________________________________ David P. Cann The