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Description
Although wind turbine bearings are designed to operate 18-20 years, in the recent years premature failure among these bearings has caused this life to reduce to as low as a few months to a year. One of the leading causes of premature failure called white structure flaking is a mechanism that was first cited in literature decades ago but not much is understood about it even today. The cause of this mode of failure results from the initiation of white etched cracks (WECs). In this report, different failure mechanisms, especially premature failure mechanisms that were tested and analyzed are demonstrated as a pathway to understanding this phenomenon. Through the use of various tribometers, samples were tested in diverse and extreme conditions in order to study the effect of these different operational conditions on the specimen. Analysis of the tested samples allowed for a comparison of the microstructure alterations in the tested samples to the field bearings affected by WSF.
ContributorsSharma, Aman (Author) / Foy, Joseph (Thesis director) / Adams, James (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor)
Created2015-05
Description
Faërie exists in the mythology and literature of northwestern Europe as a spiritual Otherworld, a land of immortal beauty just tangential to our own. This project explored multiple conceptions of Faërie and their common association with things that have been lost. The pattern that emerged is one in which the Otherworld is not merely linked to lost things, but becomes a way of preserving and rediscovering them. Faërie embodies the hope that things lost live on, and can be found again.
ContributorsBell, Andrew Roos (Author) / Baldini, Cajsa (Thesis director) / Maring, Heather (Committee member) / Foy, Joseph (Committee member) / Barrett, The Honors College (Contributor) / School of Politics and Global Studies (Contributor) / Department of English (Contributor)
Created2013-05
Description
This project was designed to capture family stories. Three generations of family members were interviewed on the topics of work and family, using oral history methods. The following trends in thinking were identified after analysis of the interview transcripts: education, work ethic, attachment to place, importance of mothers, and divorce. These trends were then further analyzed to see how they affect the family members across the three generations. Additionally, connections were drawn to significant factors in United States and Arizona history to help explain why things are the way they are in the family.
ContributorsMoran, Madeline Nicole (Author) / Popova, Laura (Thesis director) / Foy, Joseph (Committee member) / W. P. Carey School of Business (Contributor) / School of Accountancy (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05