Index Catalog // ScholarsArchive@OSU

GPU-Based Fluid-Structure Interaction using Immersed Boundary Methods

Creator:: Minar, Christopher
Abstract:: Engineering applications often require fast, accurate solutions of fluid flow around freely moving bodies. The massive parallelism enabled by graphics processing unit (GPU) architecture enables high performance, offering a promising alternative to traditional solver acceleration via multicore central processing units (CPU). However, fully harnessing GPU parallelism requires specialized algorithms and...
Resource Type:: Masters Thesis

Fibers Microbuckling of Uncured Carbon-Epoxy Prepreg in Bending

Creator:: Guo, Yizhi
Abstract:: Prepreg is widely used in composite manufacturing with advanced composites such as carbon and aramid. The material is characterized by a degree of flexibility (drape) and stickiness (tack), which allows an efficient layup on molds with complex shapes. However, axial instability of compressed fibers during the molding process may occur,...
Resource Type:: Masters Thesis

From Functional Modeling to Optimization : Risk and Safety in the Design Process for Large-Scale Systems

Creator:: McIntire, Matthew G.
Abstract:: In order to more effectively design large, complex systems, risk must be accounted for throughout the design process. A systematic way to account for risk is by using system model simulation. During the conceptual design phase, functional models can be drawn to help the engineer design their system's functional architecture....
Resource Type:: Dissertation

Aircraft wing optimization using B-spline models and panel methods

Creator:: Jackson, Danielle Monique
Abstract:: This research investigates shape optimization process, using b-spline models and panel methods, to achieve a high lift to drag ratio for an aerodynamic structure. This research is a proof of concept for further research in aerodynamic shape optimization. The coupled process, involving the design and optimization of a random shape,...
Resource Type:: Masters Thesis

The Global Consumption Speeds of Premixed Large-Hydrocarbon Fuel/Air Turbulent Bunsen Flames

Creator:: Fillo, Aaron Jesse
Abstract:: Large-hydrocarbon fuels are used for ground and air transportation because of their high energy-density and will be for the foreseeable future. However, combustion of large-hydrocarbon fuels in a turbulent environment is poorly understood and difficult to predict. The turbulent flame speed, which is the velocity at which a flame front...
Resource Type:: Masters Thesis

Computational Investigation on the Effects of Arc Location in Vacuum Arc Remelting

Creator:: Soler, Miguel
Abstract:: Vacuum arc remelting (VAR) is a secondary melting process for exotic alloys. The main purpose of this process is to increase the input ingot’s physical and chemical homogeneity. This is accomplished through the application of a high current that melts the material through the emergence of electrical arcs that induce...
Resource Type:: Masters Thesis

A performance comparison of chainsaw bar lubricants

Creator:: Suryan, Levi J.
Abstract:: Chainsaws, an indispensable tool for modern forestry operations, rely on bar lubricant to prevent rapid wear of the chain and bar. Choice of bar lubricant must balance performance, cost, and biological impact. Many bar lubricants are available, but little published work exists that conclusively ranks the performance of these choices....
Resource Type:: Masters Thesis

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

Experimental Classification of Intralaminar Matrix Compression Damage Propagation in Carbon Fiber Reinforced Polymers

Creator:: Daniels, Mitchell Alan
Abstract:: Composites often are able to carry more load after damage due to the structure of laminates. In addition, damage can be difficult to detect in composites compared to homogeneous materials. Understanding the behavior of composite material after damage is vital for composite structural design. Currently, experimental methods exist for classifying...
Resource Type:: Masters Thesis

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

Stability and Liftoff of Non-premixed Large Hydrocarbon Flames in MILD Conditions

Creator:: Walters, Eric M.
Abstract:: The Moderate or Intense Low-oxygen Dilution (MILD) combustion regime has received interest from the industrial furnace and gas turbine engine industries due to attractive properties of reduced NO[subscript x] emissions and high thermal efficiency. MILD combustion is characterized by low oxygen concentrations (i.e. 3%-9% by volume) and high reactant temperatures....
Resource Type:: Masters Thesis

Design of Complex Engineered Systems Using Multiagent Coordination

Creator:: Soria Zurita, Nicolás Francisco
Abstract:: This thesis is the combination of two research publications working toward a unified strategy in which the design of complex engineered systems can be completed using a multiagent coordination approach. Current engineered system modeling techniques segment large complex models into multiple groups to be simulated independently. These methods restrict the...
Resource Type:: Masters Thesis

Fused Filament Fabrication of Filled Polymers for Metal Additive Manufacturing

Creator:: Barmore, Brenton
Abstract:: Additive manufacturing (AM) is a relatively new manufacturing technique that can create high complexity parts out of many materials in low volume. The fused filament fabrication (FFF) is the lowest cost AM process and is capable of producing only thermoplastic components. Powder injection molding (PIM) is a high volume low...
Resource Type:: Masters Thesis

Heat Treatment Effects on the Mechanical Properties and Microstructure of CPM-M4 Tool Steel

Creator:: Fast, Cody P.
Abstract:: Variations in heat treatments have significant effects on the microstructure of tool steels. For CPM-M4 tool steel, the changes in microstructure and mechanical properties were observed based off of variations in temperature. Five heat treatments with constant exposure time and variable austenitizing and tempering temperatures were performed on samples of...
Resource Type:: Masters Thesis

Composite Tools and Optimization in Racecars to Reduce Mass and Design Time

Creator:: Wagoner, Marshall
Abstract:: Designing a carbon fiber chassis for the Global Formula Race car has historically proven to be both time intensive and difficult. The goal of this thesis is to improve the design process for testing Global Formula Racing team's composite chassis sandwich panels. Consideration was taken regarding Formula SAE rules, and...
Resource Type:: Masters Thesis

Dividing Complex Parts into Multiple Pieces for Advanced Joining and Additive Manufacturing

Creator:: Massoni, Brandon R.
Abstract:: Poor material utilization is inherent to conventional manufacturing processes, leading to high material waste and machining times. Additive manufacturing processes attempt to solve this issue by allowing production of near-net shapes, but the processes may be too expensive or infeasible. By leveraging both processes in a single part, the waste...
Resource Type:: Masters Thesis

Floating Offshore Wind Array Systems Optimization off the US West Coast using an Extended Pattern Search Algorithm

Creator:: Forinash, Caitlin P.
Abstract:: The large wind resource off the United States West Coast has the potential to generate wind power for millions of homes, yet the high cost of energy for offshore wind power compared to traditional sources has slowed the development of offshore wind farms in the US. The four studies presented...
Resource Type:: Masters Thesis

Using Automation to Understand Sustainable Design Trade-Offs and to Promote Environmental Sustainability in the Early Design Phase

Creator:: Wisthoff, Addison K.
Abstract:: Sustainable product design is becoming an important component of the development of consumer products. Currently there are limited design resources to aid in the creation of environmentally sustainable products. The purpose of this research is to theorize a new method for integrating sustainable design knowledge into the early design phase...
Resource Type:: Masters Thesis

Lift Enhancement of Pliant Wings Through Bio-Mimicry

Creator:: Osterberg, Nathaniel Brent
Abstract:: Flexible aerodynamic surfaces have been shown to favorably influence flight characteristics at low Reynolds numbers by increasing lift, angle of attack at stall, and resistance to perturbation. The objective of the research presented within this thesis is to investigate the influence of two aspects of flight observed in biological flyers,...
Resource Type:: Masters Thesis

Applications of an Agent-Based Approach to Automated Structure Design

Creator:: Kiff, Robin E.
Abstract:: This thesis details the applications of a new method of agent-based structure synthesis. The goal of this research is to create structures that meet a structural goal within a simulated physics environment. The method proposed works as an iterative process of changing the structure, evaluating the new structure and using...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

GPU-Based Fluid-Structure Interaction using Immersed Boundary Methods

Fibers Microbuckling of Uncured Carbon-Epoxy Prepreg in Bending

From Functional Modeling to Optimization : Risk and Safety in the Design Process for Large-Scale Systems

Aircraft wing optimization using B-spline models and panel methods

The Global Consumption Speeds of Premixed Large-Hydrocarbon Fuel/Air Turbulent Bunsen Flames

Computational Investigation on the Effects of Arc Location in Vacuum Arc Remelting

A performance comparison of chainsaw bar lubricants

Crack Penetration and Deflection Behavior at Interfaces

Experimental Classification of Intralaminar Matrix Compression Damage Propagation in Carbon Fiber Reinforced Polymers

Characterization of Two Novel Machining Processes for Difficult to Machine Materials

Stability and Liftoff of Non-premixed Large Hydrocarbon Flames in MILD Conditions

Design of Complex Engineered Systems Using Multiagent Coordination

Fused Filament Fabrication of Filled Polymers for Metal Additive Manufacturing

Heat Treatment Effects on the Mechanical Properties and Microstructure of CPM-M4 Tool Steel

Composite Tools and Optimization in Racecars to Reduce Mass and Design Time

Dividing Complex Parts into Multiple Pieces for Advanced Joining and Additive Manufacturing

Floating Offshore Wind Array Systems Optimization off the US West Coast using an Extended Pattern Search Algorithm

Using Automation to Understand Sustainable Design Trade-Offs and to Promote Environmental Sustainability in the Early Design Phase

Lift Enhancement of Pliant Wings Through Bio-Mimicry

Applications of an Agent-Based Approach to Automated Structure Design

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