Index Catalog // ScholarsArchive@OSU

DNS study of Particle-bed-Turbulence Interactions in Oscillatory Flows

Creator:: Ghodke, Chaitanya Deepak
Abstract:: Turbulent flows over rough surfaces are encountered in many engineering and geophysical applications. Flows of this nature, due to their increasing technological interests, have been a subject of rigorous investigation in recent years. Of the particular interest to the oceanographic community is the study of turbulent oscillatory flow over rough...
Resource Type:: Dissertation
Full Text:: & Chiew, 1998; Papanicolaou et al., 2002; Cheng & Law, 2003; Wu & Chou, 2003; Wu & Kuo-Hsin, 2004

Investigation of Thermal Degradation in Structural Alloys for Nuclear Power Systems

Creator:: Teng, Fei
Abstract:: The thermal degradation of structural materials is considered to be a key factor for evaluating the lifetime of current nuclear power plants. Ni-based and Fe-based alloys, such as 690, 625, 304, and 316, are widely used in nuclear industry as structural components due to the extraordinary corrosion resistance and mechanical...
Resource Type:: Dissertation

Stability and biological responses of zinc oxide metalworking nanofluids (ZnO MWnF™)

Creator:: Niyaghi, Faraz
Abstract:: Zinc oxide nanoparticles (ZnO NPs) have demonstrated the ability to improve lubrication and thermal conductivity, and stand as promising metalworking lubricant and coolant additives due to their low cost compared to other NPs. While nanomaterials are a focus of research due to their potential to enable advanced technologies, little is...
Resource Type:: Masters Thesis

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

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

Functional Materials and Techniques for Additive Manufacturing in Soft Robotics

Creator:: Walker, Stephanie
Abstract:: This thesis outlines the development of new elastomeric materials and manufacturing processes for soft robotics. Specifically, this work describes the development of custom material formulations for use in additive manufacturing, additive manufacturing processing techniques for silicone elastomers, and multi-component additive manufacturing techniques. Material synthesis and processing is a gap in...
Resource Type:: Dissertation

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
Full Text:: engineering problems [2]. According to Fu et al., bio-inspired design was established in the field of

Modeling and development of fabrication method for embedding membrane based microvalve in bulk microfluidic device

Creator:: Abhinkar, Bindiya S.
Abstract:: PDMS membrane-based microvalves are becoming increasingly more important for the control of fluid flow within MECS applications such as microreactors used to synthesize nanoparticles and biological macromolecules. The motivation for pursuing PDMS membrane-based microvalves is for implementing a plug flow microreactor to simulate slug flow yielding a narrower residence time...
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

Understanding Designer Mental Models to Support Computer Directed Analogical Design

Creator:: Arlitt, Ryan M.
Abstract:: Analysis of alternative concepts has a significant impact on design project outcomes, and yet many design teams fail to consider a significantly broad range of conceptual solutions. Within the realm of conceptual design exists a technique called design by analogy (DBA) -- the practice of reapplying old solutions to new...
Resource Type:: Dissertation

ScholarsArchive@OSU

DNS study of Particle-bed-Turbulence Interactions in Oscillatory Flows

Investigation of Thermal Degradation in Structural Alloys for Nuclear Power Systems

Stability and biological responses of zinc oxide metalworking nanofluids (ZnO MWnF™)

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

Machining and toxicological performance of a zinc oxide metalworking nanofluid

Functional Materials and Techniques for Additive Manufacturing in Soft Robotics

Bio-Inspired Design of Vehicles that Operate in Complex Environments

Modeling and development of fabrication method for embedding membrane based microvalve in bulk microfluidic device

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

Understanding Designer Mental Models to Support Computer Directed Analogical Design

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