Index Catalog // ScholarsArchive@OSU

Mechanical characterization of a simple gel in a prototype device that models a degenerative intervertebral disc

Creator:: Cenar, Yannick
Abstract:: A large part of low-back pain occurrences are due to disc herniation or prolapse of the nucleus pulposus. An alternative technique to existing treatments of low back pain includes nucleus pulposus replacement by an artificial material to relieve pain and restore normal function. To date, there has been a deficiency...
Resource Type:: Masters Thesis
Full Text:: obtained from the cell walls of some species of red algae or seaweed. For the purposes of this

Risk-based design for multidisciplinary complex systems

Creator:: Farhangmehr, Farzaneh
Abstract:: The ultimate goal of large-scale design organizations are mainly to reduce costs and improve reliability and performance of systems while assessing how much risk (cost, schedule, scope) they can take and still remain competitive. To achieve this goal they need to develop tools to reach the most preferred design product...
Resource Type:: Masters Thesis

Towards reliable and survivable ocean wave energy converters

Creator:: Brown, Adam C.
Abstract:: Ocean wave energy is a new and developing field of renewable energy with great potential. The energy contained in one meter of an average wave off the coast of Newport Oregon could supply dozens of homes with electricity. However, ocean waves are usually quite irregular which leads to large bursts...
Resource Type:: Masters Thesis
Full Text:: ASME 2010 International Design Engineering Technical Conferences & Computers and Information in

Extension of early stage failure analysis tools to Prognostics Health Management design

Creator:: Kramer, Scott
Abstract:: Modern complex mechanical systems have evolved to a point of incredible complexity. Many now operate with significant assistance from automated response functions, and some operate without human operators at all. These increasingly complex systems have also become more expensive and more ambitions in mission, bringing about higher risk to both...
Resource Type:: Masters Thesis

Micro-bubble dynamics in two-phase flow through a micro-channel

Creator:: Shepard, Thomas G.
Abstract:: An experimental investigation into the behavior of micro-bubbles flowing through a micro-channel has been conducted. Experiments were performed within a rectangular micro-channel with dimensions of 5 cm x 13.2 mm x l30 jim. Bubbles were generated in an electrolyte solution by electrolysis at the lower channel wall near the inlet....
Resource Type:: Masters Thesis

Design analysis using function-based failure propagation in failed system states

Creator:: Jensen, David Charles
Abstract:: For safety critical complex systems, reliability and risk analysis are important design steps. Implementing these analyzes early in the design stage can reduce costs associated with redesign and provide important information on design viability. In the past several years, various research methods have been presented in the design community to...
Resource Type:: Masters Thesis
Full Text:: Enable Risk-Informed Design. in ASME International Mechanical Engineering Congress and Exposition. 2008

Failure state identification for requirements development during complex system design

Creator:: Mueller, Jonathan D.
Abstract:: The increasing level of complexity in systems creates a growing challenge for engineers to design safe and reliable systems. The growing complexity can lead to possible moments when situations occur that were unanticipated or were not known that they could occur by designers and leave the system in an undesirable...
Resource Type:: Masters Thesis

Learning from action not taken in multiagent systems

Creator:: Khani, Newsha
Abstract:: Coordination in large multiagent systems in order to achieve a system level goal is a critical challenge. Given the agents' intention to cooperate, there is no guarantee that the agent actions will lead to good system objective especially when the system becomes large. One of the primary difficulties in such...
Resource Type:: Masters Thesis

A hierarchical neuro-evolutionary approach to small quadrotor control

Creator:: Shepherd, Jack F., III
Abstract:: Quadrotors are unique among Micro Aerial Vehicles in providing excellent maneuverability (as opposed to winged flight),while maintaing a simple mechanical construction (as opposed to helicopters). This mechanical simplicity comes at a cost of increased controller complexity. Quadrotors are inherently unstable, in the sense that they are essentially unflyable by a...
Resource Type:: Masters Thesis

Quantitative comparison of full field strains experimentally measured and analytically predicted for aluminum foams

Creator:: Rutschman, Scott A.
Abstract:: Metallic foams have become widely available and have unique properties that make them attractive for use in a variety of engineering applications. Due to their complex structure, the behavior of foams under complex loading conditions is a subject of continued research. Digital volume correlation is a technique wherein full-field strains...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Mechanical characterization of a simple gel in a prototype device that models a degenerative intervertebral disc

Risk-based design for multidisciplinary complex systems

Towards reliable and survivable ocean wave energy converters

Extension of early stage failure analysis tools to Prognostics Health Management design

Micro-bubble dynamics in two-phase flow through a micro-channel

Design analysis using function-based failure propagation in failed system states

Failure state identification for requirements development during complex system design

Learning from action not taken in multiagent systems

A hierarchical neuro-evolutionary approach to small quadrotor control

Quantitative comparison of full field strains experimentally measured and analytically predicted for aluminum foams

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