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Filtering by: Creator Osorio, Johan S. Remove constraint Creator: Osorio, Johan S. Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering Language English [eng] Remove constraint Language: English [eng]

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  • Heat transfer coefficient of boiling ammonia in an incline tube

    Creator:
    Holstege, Conrad Johan Marie
    Resource Type:
    Masters Thesis
    Full Text:
    ITCLINED TUBE by CONRAD JOHAN MARIE HOLSTEGE A TfFSIS submitted to OREGON STLTI COLLEGE in

  • Optimal control of an underactuated bipedal robot

    Creator:
    Jones, Mikhail S.
    Abstract:
    Bipedal robots represent a unique class of control problems that combine many of the most difficult elements of nonlinear control. These robots are typically designed to be mobile and as such have limited energy and actuator authority making efficiency a prime concern. Unlike wheeled robots, legged robots must transition between...
    Resource Type:
    Masters Thesis
    Full Text:
    ABSTRACT OF THE THESIS OF Mikhail S. Jones for the degree of Master of Science in Mechanical Engineering

  • The Structural Characteristics of Robustness in Large-Scale Complex Engineered Systems

    Creator:
    Walsh, Hannah S.
    Abstract:
    Modern engineered systems are increasingly integrated into society, decentralized, and interconnected. However, scale and complexity create unique challenges in system design, such as emergent behavior and unintended consequences. This work investigates the structural characteristics of robustness in complex engineered systems by identifying patterns of under-recognized vulnerabilities at various levels of...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Hannah S. Walsh for the

  • LPBF and Post Processing of H13 Tool Steel

    Creator:
    Alabdulali, Ali
    Abstract:
    Laser powder bed fusion (LPBF) is an innovative method where metal powder is fused together to generate complex geometries. LPBF is used as a technology to reduce material waste, and extensive labor that are often linked to conventional subtractive manufacturing. H13 tool steel is one of the widely used materials...
    Resource Type:
    Masters Thesis
    Date Created:
    2023-08-31
    Full Text:
    density of 98% is obtained. Laser power of 203W, scanning speed of 700 mm/s, hatch spacing of 40μm and

  • A Computational Framework for Resilience-Informed Design

    Creator:
    Hulse, Daniel E.
    Abstract:
    It is desirable for complex engineered systems to perform missions efficiently and economically, even when these missions' complex, variable, long-term operational profiles make it likely for hazards to arise. It is thus important to design these systems to be resilient so that they will actively prevent and recover from hazards...
    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:
    polyurethane with a range of strain rates, from quasi-static (.0033 s-1) to highly dynamic (160 s-1). While

  • Evaluation of total hip arthroplasty research in the US and Europe

    Creator:
    Simmons, Marcy J.
    Abstract:
    Background: Hip replacements are considered routine operations which improve the quality of life in patients by reducing pain and restoring function. There are many variations in prostheses with varying benefits and disadvantages. Methods: Literature from the United States and Europe was collected on total hip replacements between 2001 and the...
    Resource Type:
    Research Paper
    Full Text:
    the 1960’s. That’s when Dr. John Charnley realized that a successful hip implant would have a

  • Identification of Physical and Chemical Processes on Ignition and Burning of Live Fuels

    Creator:
    Fazeli, Hamid
    Abstract:
    Wildland fire refers to an unpredictable and uncontrollable fire that happens in wildland areas. Regardless of the beneficial impacts of wildland fires on ecosystems, the destructive impacts of wildfires on air quality, economy, public health, etc. are considerable. An essential goal in the fire community is that the wildland fires...
    Resource Type:
    Masters Thesis
    Full Text:
    ………………………………. 21 2.10 Multi-stage of ignition and burning in live fuels. Time 0.0 (s) refers to when the needle

  • Automated Assembly Planning : From CAD Model to Virtual Assembly Process

    Creator:
    Rafibakhsh, Nima
    Abstract:
    Assembly planning is a crucial task for every manufacturing product. In general, assembly operations consume more than 30% of the total manufacturing time and cost. Therefore, any effort in optimizing assembly will have a significant impact on the economic success of manufacturing. Finding an optimal assembly plan by hand is...
    Resource Type:
    Dissertation
    Full Text:
    sequence or the orders that parts need to be assembled on each other (Viganò & Osorio Gómez 2012

  • Learning-based control and coordination of autonomous UAVs

    Creator:
    Bell, Adam R.
    Abstract:
    Uninhabited aerial vehicles, also called UAVs are currently controller by a combination of a human pilot at a remote location, and autopilot systems similar to those found on commercial aircraft. As UAVs transition from remote piloting to fully autonomous operation, control laws must be developed for the tasks to be...
    Resource Type:
    Masters Thesis