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Analysis of acoustic emission waveforms from fatigue cracks on a steel bridge hanger

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dc.contributor.authorSison, Miguel Fernando G.en
dc.contributor.departmentEngineering Mechanicsen
dc.date.accessioned2014-03-14T21:29:20Zen
dc.date.adate2009-02-13en
dc.date.available2014-03-14T21:29:20Zen
dc.date.issued1995en
dc.date.rdate2009-02-13en
dc.date.sdate2009-02-13en
dc.description.abstractFatigue cracks on a steel bridge hanger were monitored for acoustic emission in conjunction with strain gage monitoring. Waveforms of emissions were collected and classified using source location, strain magnitude, position on strain cycle and uniqueness of waveforms as the primary criteria. A vast majority of AE from the cracks were found to be due to crack face rubbing and the crushing of corrosion products between the crack faces while limited crack growth emissions were detected. AE was monitored from A588 compact tension specimens under variable amplitude tension-tension fatigue loading, results of which were used to aid in the interpretation of AE data from the hanger. Crack growth AE were detected only on overload cycles mostly above 92% of maximum load while AE due to crack face rubbing occurred throughout the strain cycle.en
dc.description.degreeMaster of Scienceen
dc.format.extentviii, 92 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-02132009-172406en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-02132009-172406/en
dc.identifier.urihttp://hdl.handle.net/10919/41098en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1995.S526.pdfen
dc.relation.isformatofOCLC# 34240223en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1995.S526en
dc.titleAnalysis of acoustic emission waveforms from fatigue cracks on a steel bridge hangeren
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineEngineering Mechanicsen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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