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Full-Text Articles in Engineering
Modeling Of The Interior Electric Field In Photovoltaic Cells, Tara Jeatran
Modeling Of The Interior Electric Field In Photovoltaic Cells, Tara Jeatran
The Journal of Undergraduate Research
With the emergence of photovoltaic technologies, there is a strong technological demand for high-performance photovoltaic devices. One of the most promising device concepts developed at SDSU is organic-based photovoltaic cells. The performance of the PV cells is controlled by charge generation and charge separation, and charge transportation processes. Extraordinary control over the properties of the organic photovoltaic materials will be needed in order for this research to succeed. Therefore, the interior electric field and the macro electric properties of the system are the foundation behind these facts and are critical properties on their performance. In this paper, the fundamentals of …
Vibratory Feeder Bowl Analysis, Chris Green, Jeff Kreul
Vibratory Feeder Bowl Analysis, Chris Green, Jeff Kreul
The Journal of Undergraduate Research
Vibratory feeder bowls are used to feed small parts into various stations. At each station the parts will be rejected or accepted depending on the orientation of the part. This analysis was for Royal Plastics, Inc. who was looking to increase the production by increasing the part feed rate of one of their vibratory feeder bowls. As the parts are orientated they will be fed to a new station and often used in robotic systems that produce larger assembled products. The scope of this analysis is to produce a detailed analysis of the vibration system required to move parts through …
Measurements Of Turbulent Pressure Under Breaking Waves, Christopher Olsen
Measurements Of Turbulent Pressure Under Breaking Waves, Christopher Olsen
The Journal of Undergraduate Research
The experiments discussed in this paper describe the turbulent fluid pressures in breaking waves. Before actual data measurements could be made, the instruments used were put through various tests to determine their ability to capture accurate data. These tests were both static and dynamic in nature. Following the tests on the pressure measurement system, waves were produced such that they were breaking at the instrument panel. Wave height, subsurface pressure, and three components of velocity were measured at this point. Using MATLAB to produce plots, waves that produce strong turbulence were isolated and their respective pressures, as well as theoretical …
The Journal Of Undergraduate Research: Volume 07
The Journal Of Undergraduate Research: Volume 07
The Journal of Undergraduate Research
This is the complete issue of the South Dakota State University Journal of Undergraduate Research, Volume 7.
Wind Turbine Mounting Analysis, Chris Applen, Garet Miller, Ryan Jervik
Wind Turbine Mounting Analysis, Chris Applen, Garet Miller, Ryan Jervik
The Journal of Undergraduate Research
This paper analyzes the bolts and screws necessary to secure a certain wind turbine design to a silo. The analysis is divided into two major segments. First is the determination of maximum wind velocity and the resultant forces from the given wind conditions. The resultant force is determined from the dynamic pressure caused by the wind velocity and the surface area of the wind turbine blades. Second is carrying out the fatigue analysis to ensure the chosen bolts and screws will not fail. This is done through the use of a Goodman line diagram. In order for the fatigue design …