Index Catalog // ScholarsArchive@OSU

Development of acoustic emissions testing procedures applicable to conventionally reinforced concrete deck girder bridges subjected to diagonal tension cracking

Creator:: Lovejoy, Steven C.
Abstract:: A need exists to develop a non-destructive testing technique that can identify the formation and propagation of diagonal tension cracks in conventionally steel reinforced concrete deck girder (RCDG) highway bridges in the State of Oregon. Such a technique could be included into a structural health monitoring (SHM) system installed on...
Resource Type:: Dissertation

Human gait analysis by gait pattern measurement and forward dynamic model combined with non linear feedback control

Creator:: Ko, Seung-uk
Abstract:: Normal gait of human is believed to be an adapted motor control result of optimal behavior of individual. Normal gait would be altered by aging or injury without being perceived. Subtle changes in gait which is not easy to detect, can cause many serious problems including joint pains and even...
Resource Type:: Dissertation
Full Text:: : _______________________________________________________________ Mark F. Costello Normal gait of human is believed to be an adapted motor control result

Optimal soaring by a small autonomous glider

Creator:: Kyle, Jason A.
Abstract:: Extending the flight time of an autonomous unmanned air vehicle by soaring is considered. A suboptimal controller is developed and successful static soaring is demonstrated with a 6 degree of freedom glider model. Altitude gain rates of between ¼ and ½ m/s are achieved with this simple implementation. A hybrid...
Resource Type:: Dissertation
Full Text:: . Abstract approved: __________________________________________________ Mark F. Costello

Design and preliminary characterization of thermally-actuated pumps utilizing Marangoni and Leidenfrost effects

Creator:: Sedler, Stephen Joseph
Abstract:: Design and preliminarily characterization of two thermally-actuated pumps is presented in this thesis. The unique feature of both pumps is the presence of periodic asymmetrical structures on the channel walls. Two heat transfer effects are used with surface asymmetry to generate forces that drive the fluid in a preferential direction...
Resource Type:: Honors College Thesis
Full Text:: thank Andrew Brock, Christopher Iadanza, and Mark Luckeroth for all their work with the senior project

Nonlinear model reduction using the group proper orthogonal decomposition method

Creator:: Dickinson, Benjamin T.
Abstract:: Proper orthogonal decomposition (POD) in conjunction with the Galerkin projection has been used as a model reduction technique for the tractable real-time control of high-dimensional systems. While POD based model reduction may improve the tractability of high-dimensional models, the nonlinear POD based model may be impractical for control due to...
Resource Type:: Masters Thesis
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 7 Conclusions 48 LIST OF FIGURES Figure Page 3.1 Plots of POD mode 1, ψN1,S, for benchmark

Microscale thermal management utilizing vapor extraction from a fractal-like branching heat sink

Creator:: Apreotesi, Mario A.
Abstract:: It is hypothesized that increases in pressure drop due to vapor generation during boiling in microchannels can be reduced by extraction of vapor at its point of inception. Ultimately, this local vapor extraction decreases the pressure drop required to drive the flow through a fractal-like branching, microchannel flow network within...
Resource Type:: Masters Thesis
Full Text:: microchannels Pr Q& Prandtl number rate of heat transferred Q ′′& R RT Ra Re S Sx xS t T uB

The Eyes of Tunis

Creator:: Van Bossuyt, Douglas L.
Abstract:: People often grow increasingly culturally confused when spending significant amounts of time in a foreign land. Identity can become lost only to reform in the image of the host society. This thesis presents a creative nonfiction series of essays that explore the author’s loss of self and contextual identity, the...
Resource Type:: Honors College Thesis

Detection and analysis of separated flow induced vortical structures

Creator:: Snider, Stephen David Louis
Abstract:: Flow separation is an important phenomenon in fluid dynamics because of the effect it has on lift and drag on immersed bodies. Areas of swirl within a separated flow region may have a distinct effect on the surface forces, modifying the lift and drag characteristics. A correlation between the passage...
Resource Type:: Masters Thesis

Identifying customer requirements and designing for modularity in developing specialized, low production volume products

Creator:: van Tamelen, Peter G.
Abstract:: Field biologists are in need of more specialized and technical equipment than they are able to produce on their own in order to collect data more efficiently or gather data that is not currently available. This presents a challenge for design engineers because these products are typically highly specialized and...
Resource Type:: Masters Thesis
Full Text:: Blanchette, Gordon Kruse, Mike Stekoll, Mark Denny, and Dave Carlile. I would like to give special thanks

Applications of the thermal wave technique in liquid thermal conductivity measurements and flow field diagnostics

Creator:: Wang, Zhefu
Abstract:: The thermal wave technique has been explored for the use of liquid thermal conductivity measurement and flow property diagnostics in this dissertation. For liquid thermal conductivity measurements, an experimental technique based on the thermal wave approach is developed. A stainless steel strip functions as both a heating element and a...
Resource Type:: Dissertation
Full Text:: , I want to thank my committee members, Dr. S. Apte, Dr. M. K. Drost, Dr. B. Paul, and Dr. T. Miller

ScholarsArchive@OSU

Development of acoustic emissions testing procedures applicable to conventionally reinforced concrete deck girder bridges subjected to diagonal tension cracking

Human gait analysis by gait pattern measurement and forward dynamic model combined with non linear feedback control

Optimal soaring by a small autonomous glider

Design and preliminary characterization of thermally-actuated pumps utilizing Marangoni and Leidenfrost effects

Nonlinear model reduction using the group proper orthogonal decomposition method

Microscale thermal management utilizing vapor extraction from a fractal-like branching heat sink

The Eyes of Tunis

Detection and analysis of separated flow induced vortical structures

Identifying customer requirements and designing for modularity in developing specialized, low production volume products

Applications of the thermal wave technique in liquid thermal conductivity measurements and flow field diagnostics

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