Index Catalog // ScholarsArchive@OSU

Engineering design knowledge management and capture using a process overview document

Creator:: Zarins, Andis M.
Abstract:: An experiment was conducted to examine the possible impact of an engineering design and problem solving process overview document on knowledge management and capture. A process overview document was first created. Next, two multi-disciplinary design teams worked over a two-week span to develop concepts to address a problematic opportunity. One...
Resource Type:: Masters Thesis
Full Text:: significance. Additionally, data gathered to answer five research questions indicate some favorable

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
Full Text:: AE data. The Calm Ratio was found to be of practical importance and that the values recorded were

Effects of a thin, flexible nozzle on droplet formation and impingement

Creator:: Hawke, Shane R.
Abstract:: The droplet formation process in the vicinity of the nozzle exit and the behavior of a spreading droplet during impingement on a smooth glass surface were studied. Two nozzle geometries were tested. The first case was a stiff stainless steel nozzle plate 0.787 mm thick. The second case was a...
Resource Type:: Masters Thesis
Full Text:: taken with a high-speed camera to describe the formation process at the nozzle. This data was

Microscale thermal management using membrane vapor extraction

Creator:: Apreotesi, Mario A.
Abstract:: With the miniaturization of microelectronics and increase of processor speeds in the last few decades, thermal management is drastically affecting overall packaging and system capabilities. Due to the special needs introduced, research focusing on microscale cooling has increased. This study combines the positive characteristics of single- and two-phase flows in...
Resource Type:: Honors College Thesis
Full Text:: water as the working fluid, preliminary data were gathered for inlet flow rates ranging between 2 and

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:: difference had no influence vapor extraction and network pressure drop values. Experimental data was also

Distortion-induced fatigue cracking of girder-to-crossbeam connection

Creator:: Aljutaili, Dhari S.
Abstract:: Oregon Department of Transportation’s bridge no. 9743b is a multi-span, two-girder steel deck bridge connecting the busy interstates 5 and 205. Vertical cracks have been detected in the welded girder-to-crossbeam connections at the bents. Distortion-induced fatigue is suspected to be responsible for the cracking. Linear elastic beam analysis, 2-D and...
Resource Type:: Masters Thesis
Full Text:: traffic data. Results of the analyses are discussed, and insight about the possible causes of

Brake-based wheel speed control design of a rear wheel open differential vehicle

Creator:: Jeon, Eli
Abstract:: A brake-based wheel speed control system for a rear-wheel drive vehicle is developed and simulated in this thesis. The OSU mini-Baja vehicle team will use this study in the development and implementation of a similar system for upcoming competitions. Vehicle submittals must differ to a specified degree from previous year’s...
Resource Type:: Masters Thesis
Full Text:: on a rear-wheel drive, open-differential vehicle and turning dynamics data gathered by the 2004 OSU

Simulation-based micro-scale system modeling and design optimization of a portable absorption cycle cooling system (tactical energy system) under uncertainty

Creator:: Shielee, David
Abstract:: Product design is often driven by customer needs and desires. In this case the customer is the US military, and the desire is to have a cooling unit small enough and light enough to incorporate into hazard suits for use in desert combat. The Micro technology-based Energy and Chemical Systems...
Resource Type:: Masters Thesis
Full Text:: manageable sized data sample within the design space with the eight design variables with five levels each

Effect of PZT driving waveform and frequency on meniscus shape and dropon-demand droplet formation parameters

Creator:: Yang, Guozhong
Abstract:: For piezoelectric stack (PZT) driven droplet generator, the driving waveform and driving frequency effect on liquid filament shape and droplet characteristics have been experimentally studied. The experimental study was based on a PZT driven droplet generator with known geometric design parameters and working fluid properties. A lumped-element-model (LEM) constructed to...
Resource Type:: Dissertation
Full Text:: acoustic pressure in the droplet generator decays exponentially. Experimental data show that the droplet

Mixed reactant single chamber fuel cell, using products generated from the electrolysis of an aqueous electrolyte

Creator:: Jost, William C.
Abstract:: A Mixed Reactant Single Chamber (MRSC) Fuel Cell is a relatively recent concept in the field of fuel cell engineering originally developed in the late 1950’s. Typical fuel cells have separated reactants (a separated fuel and oxidizer) that react on their usually non-selective electro-catalytic materials. A mixed reactant fuel cell...
Resource Type:: Masters Thesis
Full Text:: Data Uncertainty.......................................................63 6 RESULT AND

ScholarsArchive@OSU

Engineering design knowledge management and capture using a process overview document

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

Effects of a thin, flexible nozzle on droplet formation and impingement

Microscale thermal management using membrane vapor extraction

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

Distortion-induced fatigue cracking of girder-to-crossbeam connection

Brake-based wheel speed control design of a rear wheel open differential vehicle

Simulation-based micro-scale system modeling and design optimization of a portable absorption cycle cooling system (tactical energy system) under uncertainty

Effect of PZT driving waveform and frequency on meniscus shape and dropon-demand droplet formation parameters

Mixed reactant single chamber fuel cell, using products generated from the electrolysis of an aqueous electrolyte

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