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  • Effects of nickel addition In Cu-Zr-Hf-Al metallic glass matrix

    Creator:
    Miska, John
    Abstract:
    Metallic glasses (also referred to as amorphous metals) have been gaining interest in the materials science community in recent years. These amorphous materials demonstrate promising properties compared to their crystalline counterparts that include much higher strength and elastic strain limit, better corrosion and wear resistance, superior soft magnetism, and an...
    Resource Type:
    Honors College Thesis
    Full Text:
    . Johnson, Mat. Sci. and Eng. 375-377, 2-8 (2004) [5] R. Dai, A.K. Gangopadhyay, and R.J. Chang, Acta

  • 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

  • Quantitative comparison of full field strains experimentally measured and analytically predicted for aluminum foams

    Creator:
    Rutschman, Scott A.
    Abstract:
    Metallic foams have become widely available and have unique properties that make them attractive for use in a variety of engineering applications. Due to their complex structure, the behavior of foams under complex loading conditions is a subject of continued research. Digital volume correlation is a technique wherein full-field strains...
    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:
    performance of Yb0.26Co4Sb12/yGaSb nanocomposites originating from scattering electrons of low energy. Acta

  • Tracking of Melt Pool Motion Using Numerical Analysis of Laser Powder Bed Fusion

    Creator:
    Cox, Bryce
    Abstract:
    Laser Powder Bed Fusion (LPBF) is a process commonly used to create additively manufactured metal parts. The flexibility and complexity allowed by the LPBF process provides opportunity for significant advancement in multiple industries as parts can be customized in shape and function for specific needs. These benefits can be compounded...
    Resource Type:
    Dissertation

  • Numerical and Analytical Evaluation of Residual Stresses in Deep Rolling

    Creator:
    Nelson, Dallas
    Abstract:
    Deep rolling is a surface finishing technique that is widely used in several industries, specifically aerospace and automotive. Extending fatigue life by inducing compressive residual stresses at and below the deep rolled surface has been the primary driving force behind this newfound popularity. Understanding the development of the residual stresses...
    Resource Type:
    Masters Thesis

  • Numerical Modeling of Powder Metallurgy Hot Isostatic Pressing

    Creator:
    Sobhani, Samaneh
    Abstract:
    Powder Metallurgy Hot Isostatic Pressing (PM-HIP) is a widely recognized powder metallurgy manufacturing process to produce near-net-shape and net-shape components. During general PM-HIP processes the metal powders are filled within a capsule (die), heated and loaded with high pressure simultaneously, and solidified to form the final product. Due to the...
    Resource Type:
    Dissertation

  • Automated Design of Foam Packaging Shapes

    Creator:
    So, David M.
    Abstract:
    Creating effective packaging is about finding a balance between product protection during shipping and time consumption in the design process. Given time and cost constraints, it is hard to produce sufficiently protective padding while having it not be thicker than it needs to be. This thesis describes a method to...
    Resource Type:
    Masters Thesis
    Full Text:
    . Withers, “The variation in elastic modulus throughout the compression of foam materials,” Acta

  • Numerical and Analytical Modeling of Temperature Evolution in Laser Processing of Materials

    Creator:
    Ball, Stefan R.
    Abstract:
    The ultimate goal of this work is to analyze and compare two predictive models of thermal profile in laser processing of materials. An analytical method that uses closed-form equations to represent a geometric model of a laser heat source will be contrasted with a commercial computational fluid dynamics code that...
    Resource Type:
    Masters Thesis
    Full Text:
    Electron Beam Melting and Selective Laser Melting,” Acta Materialia, 113, pp. 56–67. [11] Rezaeifar, H

  • Computational modeling of a diffusion bonded microchannel under high pressure and temperature

    Creator:
    Pratte, William
    Abstract:
    Diffusion bonded microchannels provide significant benefits by reducing space requirements while improving thermal efficiency when used in heat exchangers. In particular, these microchannels have potential to improve efficiencies for combining concentrated solar power with supercritical CO2 Brayton cycles, where structures operate at high temperatures (760 ˚C) and high pressures (25...
    Resource Type:
    Masters Thesis