Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/9835
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dc.contributor.authorSeaver, M.en
dc.contributor.authorAktaş, Engintr
dc.date.accessioned2021-01-24T18:28:42Z-
dc.date.available2021-01-24T18:28:42Z-
dc.date.issued2009-
dc.identifier.isbn978-160595007-5-
dc.identifier.urihttps://hdl.handle.net/11147/9835-
dc.description.abstractEight fiber Bragg gratings and 3 ICP accelerometers attached to the upper surface of a foam core composite wing (1320 mm X 152.4 mm X 13.4 mm) were used to record the wing's response to broad band (0 - 1500 Hz) Gaussian excitation following a series of low energy (-6.5 J) impacts to the surface of the wing. For each damage level, at least 15 measurements were made over a period of three days to enable a statistical evaluation of each sensor's performance. Damage detection relied on measuring nonlinearity in the response data using a second order correlation metric called the Bicoherence. The amplitudes of any peaks seen in the Bicoherence were compared with thresholds determined from the variance in the off diagonal terms in the Bicoherence measurement. This approach allows the evaluation of both the probability of detection (POD) and the probability of false alarms (PFA) for each measurement without the need for a healthy baseline. The results show that all eight FBGs out perform the accelerometers and that one FBG in particular is more sensitive to nonlinearity than the others. The measurement sensitivity of the Bicoherence is also compared with static tip deflection measurements.en_US
dc.language.isoenen_US
dc.publisherDEStech Publications Inc.en_US
dc.relation.ispartofStructural Health Monitoring 2009: From System Integration to Autonomous Systems - Proceedings of the 7th International Workshop on Structural Health Monitoring, IWSHM 2009en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleROC curves for evaluating sensor performance as low energy impacts damage a composite wingen_US
dc.typeConference Objecten_US
dc.institutionauthorAktaş, Engintr
dc.departmentİzmir Institute of Technology. Civil Engineeringen_US
dc.identifier.volume2en_US
dc.identifier.startpage1649en_US
dc.identifier.endpage1655en_US
dc.identifier.scopus2-s2.0-84944688696en_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
item.grantfulltextnone-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.openairetypeConference Object-
item.languageiso639-1en-
item.fulltextNo Fulltext-
crisitem.author.dept03.03. Department of Civil Engineering-
Appears in Collections:Civil Engineering / İnşaat Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
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