Output-Only Structural Health Monitoring for Deepwater Risers: Experimental Study of Wavelet Modified SOBI and Distributed Force Index Algorithm

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dc.citation.firstpage1440010en_US
dc.citation.journalTitleInternational Journal of Structural Stability and Dynamicsen_US
dc.citation.volumeNumber14en_US
dc.contributor.authorHuang, C.en_US
dc.contributor.authorNagarajaiah, S.en_US
dc.date.accessioned2014-07-01T15:53:51Zen_US
dc.date.available2014-07-01T15:53:51Zen_US
dc.date.issued2014en_US
dc.description.abstractRisers are the conduits between the subsea wellhead and the drilling/production platform for development, production, gas lift or water injection purposes, which are also one of the most important and the most vulnerable components for deepwater floating platforms. To address the lack of appropriate global structural health monitoring (SHM) system for deepwater risers, this paper proposes a time-frequency domain approach using a wavelet modified second order blind identification (WMSOBI) method and combined distributed force change (CDFC) index. WMSOBI provides a reliable time-frequency domain identified modal properties of riser systems, even with large damping and under-determinate conditions. In addition, CDFC index generated from modal properties extracted by WMSOBI can accurately identify the damage location and damage level for both single and multiple crack scenarios. Details of experiments conducted on suspended pipe are presented. Both numerical and experimental verification are presented to validate the effectiveness of the proposed WMSOBI/CFDC algorithm and SHM system.en_US
dc.identifier.citationHuang, C. and Nagarajaiah, S.. "Output-Only Structural Health Monitoring for Deepwater Risers: Experimental Study of Wavelet Modified SOBI and Distributed Force Index Algorithm." <i>International Journal of Structural Stability and Dynamics,</i> 14, (2014) World Scientific Publishing Co.: 1440010. http://dx.doi.org/10.1142/S0219455414400100.en_US
dc.identifier.doihttp://dx.doi.org/10.1142/S0219455414400100en_US
dc.identifier.urihttps://hdl.handle.net/1911/76155en_US
dc.language.isoengen_US
dc.publisherWorld Scientific Publishing Co.en_US
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the World Scientific Publishing Co.en_US
dc.subject.keywordoutput-only modal identificationen_US
dc.subject.keywordstructural health monitoringen_US
dc.subject.keywordblind source separationen_US
dc.subject.keywordsecond order blind identificationen_US
dc.subject.keyworddeepwater risersen_US
dc.titleOutput-Only Structural Health Monitoring for Deepwater Risers: Experimental Study of Wavelet Modified SOBI and Distributed Force Index Algorithmen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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