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Filtering by: Creator Muñoz, P. Remove constraint Creator: Muñoz, P. Academic Affiliation Mechanical, Industrial, and Manufacturing Engineering Remove constraint Academic Affiliation: Mechanical, Industrial, and Manufacturing Engineering

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  • The effects of nanoparticle addition on the processing, structure and properties of SiC and AlN

    Creator:
    Onbattuvelli, Valmikanathan P.
    Abstract:
    Silicon carbide (SiC) and aluminum nitride (AlN) exhibit a combination of thermal and mechanical properties that are relevant to applications in electronics, aerospace, defense and automotive industries. However, the successful translation of these properties into final applications lies in the net-shaping of these ceramics into fully dense microstructures. Increasing the...
    Resource Type:
    Dissertation

  • Additive Manufacturing of FeCrCoCuNi High Entropy Alloy via Laser Powder Bed Fusion and Nickel Aluminum Bronze via Laser Directed Energy Deposition

    Creator:
    Doyle, Ryan P.
    Abstract:
    High Entropy Alloys (HEA) exhibit unusual properties and are gaining interest as new materials for challenging applications in the aerospace, hypersonic and medical fields. The application of HEAs have been limited by the development of powder production at scale. A recently developed process of plasma spheroidization by 6K, inc. has...
    Resource Type:
    Masters Thesis
    Full Text:
    studies [50]: 𝑉𝐸𝐷 = 𝑃 𝑣∗ℎ∗𝑡 (1) where P is the laser power (W), v is the scanning

  • Exploring the Consistency of Terminology used in Performance Measurement & Management

    Creator:
    Jacobsen, Malaia P.
    Abstract:
    Performance measurement and management (PMM) are functions used in many organizations to monitor and manage the activities of an organization. Although these functions are widely understood and applied across many types of industries and within a variety of contexts, there is no standardized terminology due to the multidisciplinary nature of...
    Resource Type:
    Masters Thesis

  • Robotic Actuation and Control with Programmable, Field-Activated Material Systems

    Creator:
    Bira, Nicholas P.
    Abstract:
    This dissertation presents novel, field-activated smart material systems for the actuation and control of autonomous robots. Smart materials, a type of material whose properties can be changed with an external stimuli, represent a promising direction to expand upon existing robotic control and actuation methods, particularly in the sub-fields of soft...
    Resource Type:
    Dissertation

  • Characterization of Two Novel Machining Processes for Difficult to Machine Materials

    Creator:
    Doran, Michael P.
    Abstract:
    New materials with superior mechanical properties, such as increased strength and hardness, have been developed to allow for new and improved products. However, the mechanical properties that make these materials useful also makes them difficult to process using conventional methods. New machining processes need to be developed to generate products...
    Resource Type:
    Masters Thesis
    Full Text:
    THE THESIS OF Michael P. Doran for the degree of Master of Science in Mechanical Engineering

  • Crystallization Rates of AIST and Ge Thin Films by Optical and Electron Microscopy

    Creator:
    Bird, Victoriea L.
    Abstract:
    The amorphous to crystalline phase change is of great interest for the production and operation of phase change memory and germanium electronic devices. Phase change memory relies on the ability to differentiate between differences in optical or electrical properties between the amorphous and crystalline phases of a single material. Amorphous...
    Resource Type:
    Masters Thesis
    Full Text:
    because it has such a low access speed and the bits cannot be very dense due to the diffraction limit. P

  • In-situ manufacturing of ODS FeCrAlY alloy via laser powder bed fusion

    Creator:
    Mirzababaei, Saereh, Ghayoor, Milad, Doyle, Ryan P., and Pasebani, Somayeh
    Abstract:
    Gas-atomized Fe–24Cr–8Al–0.5Y (wt.%) powder was used as a feedstock in a laser powder bed fusion process with nitrogen atmosphere. Formation of Al–Y–O-enriched nanoparticles with diameters of 10–100 nm implied in-situ precipitation of Al–Y–O-enriched nanoparticles within the ferritic matrix developing an oxide dispersion strengthened FeCrAl alloy without any mechanical alloying. Thermodynamics...
    Resource Type:
    Article
    Full Text:
    @oregonstate.edu (S. Pasebani). Saereh Mirzababaei a,b, Milad Ghayoor a,b, Ryan P. Doyle a,b, Somayeh Pasebani a,b

  • Integration of Systems Thinking, Viable System Model, and System Dynamics toward Systemic Sustainability Assessment Methodology

    Creator:
    Tong, Anh B.
    Abstract:
    The developmental milestones of Sustainability are consistent with the post-normal versus traditional science, where transdisciplinary and policy/action research are among the important approaches to be added to traditional analysis. This shift requires a new perspective to look at the problem at hand: we are no longer considering a group of...
    Resource Type:
    Dissertation
    Date Created:
    Full Text:
    , and the use of performance (P), productivity (PR), and latency (L) values to track true improvement

  • An economic and environmental assessment model for microchannel device manufacturing: part 1-Methodology

    Creator:
    Gao, Qi, Lizarazo-Adarme, Jair, Paul, Brian K., and Haapala, Karl R.
    Abstract:
    To manage the effects of manufacturing industries on the economy and environment, design tools are needed that will aid engineers to assess manufacturing costs and environmental impacts early in design. The development of cost analyses and environmental assessments can be burdensome, but much of the data used in these analyses...
    Resource Type:
    Article
    Full Text:
    -components via micro electrical discharge machining. Sustainability 3, 2456e2469. Munoz, A.A., Sheng, P

  • 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:
    inform future packaging design for ease of assembly [16]. Betancur-Muñoz et al. built upon this work by

  • A framework for integrating systems thinking into sustainable manufacturing

    Creator:
    Zhang, Hao
    Abstract:
    Improving the understanding the relations of sustainability behaviors in manufacturing systems and actively engaging with manufacturers (especially SMEs) in sustainability efforts is key to the long-term success of U.S. industry and the natural environment. This study addresses this urgent need by establishing a systemic approach for the design of costing...
    Resource Type:
    Dissertation
    Full Text:
    definition, life cycle inventory, life cycle impact 17 assessment, and interpretation (ISO, 2006, p

  • An economic and environmental assessment model for microchannel device manufacturing

    Creator:
    Gao, Qi
    Abstract:
    A key application of microchannel process technology (MPT) is its implementation in heat exchanger devices, since a larger surface contact area can be realized than in conventional approaches, thus achieving high heat transfer efficiency. To justify high volume production of configurations validated as prototypes, and to select from among the...
    Resource Type:
    Masters Thesis
    Full Text:
    . Munoz and Sheng proposed a general model of determining the environmental impact of machining

  • Modeling innovativeness in consumer products with the influence of environmental sustainability

    Creator:
    Gilchrist, Brady
    Abstract:
    This thesis is the result of two research publications, which together form a framework for the evaluation of product innovativeness with potential future applications to early design. Innovation is a challenging concept to quantify. Experts seemingly have a grasp of what innovation is when they see it, however this evaluation...
    Resource Type:
    Masters Thesis

  • The Design of Good Work

    Creator:
    Hattrup, Steven H.
    Abstract:
    Work occupies a considerable amount of time in most peoples’ lives and can be a source of great pleasure or a source of pain. To enhance peoples’ experience at work, we must first understand how to measure and improve the design of work. This research sought to do just that,...
    Resource Type:
    Dissertation
    Full Text:
    . ................................................................................................................. 245 LIST OF FIGURES (Continued) Figure Page Figure 39: Significant (p-value ≤0.05

  • Power Cycle Selection and Optimization for a Small Modular Reactor

    Creator:
    Kissick, Sean M.
    Abstract:
    As a way to improve safety and economics, one area of research and commercialization of new nuclear power plants has focused on the development of small modular reactors (SMRs). NuScale Power has developed a 50 MWe natural convection cooling SMR coupled with a regenerative Rankine cycle. Current estimates place the...
    Resource Type:
    Masters Thesis
    Full Text:
    moisture. ηI First law cycle efficiency. xv ηp Isentropic efficiency of pump or compressor. ηt

  • Practical Reinforcement Learning for Bipedal Locomotion

    Creator:
    Dao, Jeremy
    Abstract:
    Reinforcement learning has emerged as a popular tool for solving control tasks, with multiple works focusing on the complex and dynamic task of locomotion. However, the naive application of reinforcement learning to this problem often produces maladaptive policies that exploit the model or reward function. This results in behavior that...
    Resource Type:
    Capstone Project
    Full Text:
    by the tuple (S,A, P,R, γ) where S is the set of possible states, A is the set of possible actions

  • Influences of Replacing Cr with Mo in Fe25Co25Ni25Cr25-XMoX High Entropy Alloy Series on the Microstructure and Mechanical Properties

    Creator:
    Xu, Yifan
    Abstract:
    Fe25Co25Ni25Cr25-XMoX High Entropy Alloys were fabricated in mini arc-melter and then cast into 4mm diameter cylinders by injection casting technique and 1cm diameter cylinders by water quenching technique. Heat transfer modeling during solidification of FeCoNiCr HEA was simulated. Combining X-Ray Diffraction, Optical Microscopy, Scanning Electron Microscope, Energy Dispersive X-ray analysis,...
    Resource Type:
    Masters Thesis
    Full Text:
       , under a given pressure (F=1), the maximum number of phases (P) in a HEA system which contains five

  • Machining and toxicological performance of a zinc oxide metalworking nanofluid

    Creator:
    Sahakian, Misha
    Abstract:
    Lower production costs are a common goal of many manufacturers as part of their continuous improvement strategies. A large portion of production costs for manufacturers is the machining of metals to form components. Metal machining is accompanied by friction and heat which is dealt with using metalworking fluids such as...
    Resource Type:
    Masters Thesis
    Full Text:
    project team consisting of Arthur Munoz, Bryan Williams, and Jonathan Glazner. All of the toxicology

  • Theoretical and implementation improvements for difference evaluation functions

    Creator:
    Colby, Mitchell Kataichi
    Abstract:
    Multiagent learning with cooperative coevolutionary algorithms is a critical area of research, and is relevant to many real-world applications including air traffic control, distributed sensor network control, and game-theoretic applications such as border patrol. A key difficulty in multiagent learning is the credit assignment problem, where the impact of each...
    Resource Type:
    Dissertation
    Full Text:
    100 agents. . . . . . . . . . . . . . . . . . 57 4.1 Case I (assumptions met): penalty game with p

  • Sustainable building design framework : an integrated approach

    Creator:
    Piacenza, Joseph R.
    Abstract:
    This paper combines two research publications working toward the development of an integrated framework for commercial sustainable building design. Current methodologies utilize a traditional architectural top-down approach to sustainable building design practices that consumes financial and temporal resources early in the design process. By identifying the array mechanical subsystems required...
    Resource Type:
    Masters Thesis

  • Development of Cu-based Thin Films for Optoelectronic Applications

    Creator:
    Angelos, Gregory S.
    Abstract:
    CIGS and CdTe based commercial thin-film solar cells (TFSCs) require an absorber thickness greater than 2 µm and 4 µm, respectively, to adequately absorb the solar spectrum. To efficiently extract photoexcited electrons, these TFSCs require relatively defect-free absorbers with high-minority carrier mobility (> 100 cm2V−1s−1) and long lifetime (> 10...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166 LIST OF FIGURES Figure Page 2.1 Basic thin-film solar cell device structure with a p-type

  • 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
    Full Text:
    Mi Molar Mass P Timestep/Laser Power P Vapor Pressure q" Heat Flux r radius R Universal

  • Bio-Inspired Design of Vehicles that Operate in Complex Environments

    Creator:
    Jackson, Danielle M.
    Abstract:
    This dissertation focuses on defining underlying mechanisms to enable the bio-inspired design of aerodynamic and/or hydrodynamic vehicles that operate within complex environments. This dissertation introduces four overarching research gaps found in current bio-inspired design research and four corresponding approach questions that guide the framework of the presented research. This research...
    Resource Type:
    Dissertation

  • An information modeling framework and desktop application to compose unit manufacturing process models for sustainable manufacturing assessment

    Creator:
    Smullin, Matteo M.
    Abstract:
    The demand from consumers for more sustainable products, and the need to comply with government regulations motivates manufacturers to evaluate their operations for opportunities to reduce environmental impact and improve economic competitiveness. Manufacturers have actively improved the sustainability performance of their products through the use of sustainability assessment methods and...
    Resource Type:
    Masters Thesis
    Full Text:
    mi mass of object or consumable i msp shot consumption nl number of paint layers p pressure

  • 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
    Full Text:
    the p-median problem (Reese, 2005

  • Multi-objective Resilience Optimization of Interdependent Critical Infrastructure Networks

    Creator:
    Tiong, Achara
    Abstract:
    Critical Infrastructures (CIs) such as energy, water supply, telecommunications, and transportation are highly vulnerable to cascading failures due to their interdependent operations. A resilient network is crucial to withstand the impact of functionality loss in disruptive events. This research evaluates network expansion as a proactive resilience strategy in which new...
    Resource Type:
    Dissertation

  • Characterization and Development of Ni-based Superalloys for Supercritical Carbon Dioxide Applications

    Creator:
    Adam, Benjamin M.
    Abstract:
    The advent of supercritical CO2 as a new heat-exchange medium has seen strong interest from the power industry and the energy research field recently. It is advan- tageous in comparison with other heat-exchange cycles, as it can be operated safely at much higher temperatures and pressures, thus increasing the thermal...
    Resource Type:
    Dissertation

  • An Information Modeling Framework for Support of Sustainable Manufacturing System Design Decision Making

    Creator:
    Shankar Raman, Arvind
    Abstract:
    Manufacturing technology has continuously evolved and advanced over the past century; this has led to an increase in the production of consumer and industrial goods driven by simultaneous growth in population and wealth. Despite the resulting economic and labor growth, environmental impacts of manufacturing have increased dramatically due to the...
    Resource Type:
    Dissertation
    Full Text:
    tool Ns Number of personnel per tool p Extrusion pressure P Annual production volume Pb Basic

  • Adaptive Multiagent Traffic Management for Autonomous Robotic Systems

    Creator:
    Rebhuhn, Carrie
    Abstract:
    There is growing commercial interest in the use of unmanned aerial vehicles (UAVs) in urban environments, specifically for package delivery applications. However, the size, complexity and sheer numbers of expected UAVs makes conventional air traffic management that relies on human air traffic controllers infeasible. To enable UAVs to safely and...
    Resource Type:
    Dissertation
    Full Text:
    V do 2: d[u] := f [u] := infinity initialize vertex u 3: color[u] = WHITE 4: p[u] := u 5: end for 6

  • Characterization of Heterostructured Nanocrystalline Metals Processed by High-Pressure Torsion

    Creator:
    Han, Jae-Kyung
    Abstract:
    High-pressure torsion (HPT) is an effective severe plastic deformation (SPD) technique to produce bulk nanostructured materials (BNMs). These BNMs often show a combination of exceptional mechanical and physical properties. Processing of single metals and alloys by HPT has been understood that the homogenous microstructures can be achieved throughout the disk...
    Resource Type:
    Dissertation
    Full Text:
    A. Evlashin, Prof. Alexander P. Zhilyaev, Prof. Alexander M. Pesin, Ms. Yulia. O. Kuzminova