Assessment of remaining fatigue performance of high mast illumination poles

dc.contributor.advisorHelwig, Todd Aaron, 1965-
dc.creatorBelivanis, Konstantinos Victoren
dc.date.accessioned2014-09-12T16:56:28Zen
dc.date.issued2014-05en
dc.date.submittedMay 2014en
dc.date.updated2014-09-12T16:56:29Zen
dc.descriptiontexten
dc.description.abstractFailures of high mast illumination poles (HMIP) around the US have raised the concerns of officials because of their location close to areas with important human activity. Previous research, conducted at the University of Texas proved that those failures were fatigue type failures and that cracking initiated at the shaft to baseplate connection, specifically at the bends of the shaft. However, no research has been conducted on the remaining fatigue life of poles after they have been in service. This thesis investigates the remaining fatigue life of a pole, removed from service after severe cracking has been observed on it, via laboratory testing. Moreover, nondestructive and destructive testing procedures were implemented to investigate the initiation and evolution of fatigue cracks. The results validated the procedures for the in-situ validation of the remaining fatigue life of those poles. Last, the destructive test results enhanced the arguments that initial cracking at the toe of the weld at the shaft to baseplate connection is a result of the galvanizing process.en
dc.description.departmentCivil, Architectural, and Environmental Engineeringen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/2152/25862en
dc.language.isoenen
dc.subjectHigh mast illumination polesen
dc.subjectFatigueen
dc.subjectCracken
dc.subjectGalvanizationen
dc.subjectInstrumentationen
dc.titleAssessment of remaining fatigue performance of high mast illumination polesen
dc.typeThesisen
thesis.degree.departmentCivil, Architectural, and Environmental Engineeringen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorThe University of Texas at Austinen
thesis.degree.levelMastersen
thesis.degree.nameMaster of Science in Engineeringen
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