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Filtering by: Committee Member Haapala, Karl R. Remove constraint Committee Member: Haapala, Karl R. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • 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
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    software ANSYS(r) to compute the shrinkage and deformation of the compact during the PM-HIP process

  • Automated decomposition of complex parts for manufacturing with advanced joining processes

    Creator:
    Massoni, Brandon R.
    Abstract:
    Recent advancements in joining operations and additive manufacturing now allow complex metal parts to be built up from raw materials, as opposed to being machined down from solid blocks. This not only opens up the design space, but also allows for much more efficient manufacturing. By decomposing a complex part...
    Resource Type:
    Dissertation
    Full Text:
    Prof. Karl Haapala, Prof. David Kim, Rothanak Chan, Harsha Malshe, Steven Lindberg, Ryan Allen, and

  • 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:
    Paasch, Dr. Karl R. Haapala and Dr. Milo Koretsky as well as research colleagues Mr. Kerry Poppa with

  • Modeling Study of the Effects of Catalyst Support on Bio-Hydrogenated Diesel Production Using Density Functional Theory

    Creator:
    Huang, Dan
    Abstract:
    The catalyst support effect on NiMoS of bio-hydrogenated diesel production was investigated via density functional theory. The activity, stability and selectivity of catalyst on three widely used catalyst supports (Al2O3, TiO2 and SiO2) were studied and compared. Catalyst-support interaction and Brønsted acidity strength of different catalyst supports were characterized, which...
    Resource Type:
    Dissertation
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    ) Chang and Dr. Karl Haapala for being my committee members and providing helpful suggestions for my

  • Incremental Forming of Polymers at Room Temperature

    Creator:
    Davar Panah, Mohammad Ali
    Abstract:
    Single Point Incremental Forming (SPIF) is a forming process in which a fully clamped sheet is formed by a hemispherical ended tool that moves along a predefined 3D toolpath. The sheet is formed in a series of local deformations to reach its desired shape. Double Sided Incremental Forming (DSIF) includes...
    Resource Type:
    Dissertation
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    members, Dr. Brian Paul, Dr. Christopher Hoyle, Dr. Karl Haapala, Dr. Ali Tabei and Dr. Kathy Mullet as

  • Nanoparticle-assisted diffusion brazing of metal microchannel arrays : nanoparticle synthesis, deposition, and characterization

    Creator:
    Eluri, Ravindranadh T.
    Abstract:
    Microchannel process technology (MPT) offers several advantages to the field of nanomanufacturing: 1) improved process control over very short time intervals owing to shorter diffusional distances; and 2) reduced reactor size due to high surface area to volume ratios and enhanced heat and mass transfer. The objective of this thesis...
    Resource Type:
    Dissertation
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    . Vincent Remcho, Dr. Chih- Hung Chang, Dr. Karl Haapala and Dr. Prasad Tadepalli for their valuable time

  • Analysis of Cellulose Nanocrystal Aerogels

    Creator:
    Buesch, Christian
    Abstract:
    Aerogels are interesting material systems with outstanding properties such as low density, high surface area, and low thermal conductivity. They can be used for a variety of applications, such as solar cells, sensors, or catalysts. Additionally they provide a unique model system to study the properties of small particles. Cellulose...
    Resource Type:
    Dissertation

  • Bi-Criteria Batching and Scheduling in Hybrid Flow Shops

    Creator:
    Shahvari, Omid
    Abstract:
    In this research, a bi-criteria batching and scheduling problem is investigated in hybrid flow shop environments, where unrelated-parallel machines are run simultaneously with different capacities and eligibilities in processing, in some stages. The objective is to simultaneously minimize a linear combination of the total weighted completion time and total weighted...
    Resource Type:
    Dissertation
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    helped me a lot throughout my job search. My gratitude extends to my committee members, Dr. Karl

  • Bi-Criteria Batching and Scheduling in Hybrid Flow Shops

    Creator:
    Shahvari, Omid
    Abstract:
    In this research, a bi-criteria batching and scheduling problem is investigated in hybrid flow shop environments, where unrelated-parallel machines are run simultaneously with different capacities and eligibilities in processing, in some stages. The objective is to simultaneously minimize a linear combination of the total weighted completion time and total weighted...
    Resource Type:
    Dissertation
    Full Text:
    helped me a lot throughout my job search. My gratitude extends to my committee members, Dr. Karl

  • Efficient Algorithms for Solving the Median Problem on Real Road Networks

    Creator:
    Ghanbartehrani, Saeed
    Abstract:
    Location theory is a well-established and active research area. The main objective in location theory is to find the best locations for facilities to meet supply and demand constraints and minimize total cost. The median problem (also known as the 1-median problem) is a special case in location analysis that...
    Resource Type:
    Dissertation
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    committee members Dr. David Kim, Dr. Kagan Tumer, and Dr. Karl Haapala, not only for their insightful