Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.marstruc.2013.10.001
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dc.titleBrittle failure caused by lamellar splitting in a large-scale tubular joint with fatigue cracks
dc.contributor.authorQian, X.
dc.contributor.authorOu, Z.
dc.contributor.authorSwaddiwudhipong, S.
dc.contributor.authorMarshall, P.W.
dc.date.accessioned2014-06-17T05:29:04Z
dc.date.available2014-06-17T05:29:04Z
dc.date.issued2013-12
dc.identifier.citationQian, X., Ou, Z., Swaddiwudhipong, S., Marshall, P.W. (2013-12). Brittle failure caused by lamellar splitting in a large-scale tubular joint with fatigue cracks. Marine Structures 34 : 185-204. ScholarBank@NUS Repository. https://doi.org/10.1016/j.marstruc.2013.10.001
dc.identifier.issn09518339
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/58970
dc.description.abstractThis paper reports a new incidence of brittle failure by lamellar splitting in a large-scale tubular X-joint and examines the possible causes of this failure. The X-joint, with multiple pre-existing fatigue cracks at the weld toe along the brace-to-chord intersection, experiences brittle failure during a monotonic in-plane bending test. Post-test sectioning of the material around the brace-to-chord intersection reveals lamellar splitting in the mid-thickness of the chord wall instead of rapid extensions of the fatigue cracks in the through-thickness direction. The lamellar splitting observed in this test differs from the conventional lamellar tearing both in its appearance and in its causes. The elongated nonmetallic inclusions concentrated at the mid-thickness, as revealed by the microscopic scanning, leads to delamination cracking near the mid-thickness and subsequently to the brittle failure of the joint. The material requirements in prevailing engineering codes do not suffice to prohibit the lamellar splitting failure observed in this study, which may cause catastrophic failures in engineering structures designed with insufficient redundancy. © 2013 Elsevier Ltd.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.marstruc.2013.10.001
dc.sourceScopus
dc.subjectDelamination
dc.subjectFracture
dc.subjectInclusion
dc.subjectLamellar splitting
dc.subjectTubular joint
dc.typeArticle
dc.contributor.departmentCIVIL & ENVIRONMENTAL ENGINEERING
dc.description.doi10.1016/j.marstruc.2013.10.001
dc.description.sourcetitleMarine Structures
dc.description.volume34
dc.description.page185-204
dc.identifier.isiut000328591200011
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