Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/153712
DC FieldValue
dc.titleCONSTRAINT-BASED FAILURE ASSESSMENT OF COPLANAR CRACKS IN PLATES AND PIPES UNDER TENSION
dc.contributor.authorSEAH TEIK TIAN KELLY
dc.date.accessioned2019-05-06T18:01:31Z
dc.date.available2019-05-06T18:01:31Z
dc.date.issued2018-08-17
dc.identifier.citationSEAH TEIK TIAN KELLY (2018-08-17). CONSTRAINT-BASED FAILURE ASSESSMENT OF COPLANAR CRACKS IN PLATES AND PIPES UNDER TENSION. ScholarBank@NUS Repository.
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/153712
dc.description.abstractDetailed numerical investigations in this study found a plasticity-induced over-constraining effect on coplanar cracks in plates and pipes under tension. This over-constraining effect increases with increasing load level, biaxial stress and material hardening exponent. Using crack driving force of coplanar cracks could not account for this constraining effect hence underestimates the stresses near the coplanar crack fronts. A crack interaction factor is proposed by considering directly the change in near-tip stress field caused by the presence of an adjacent crack, and thus incorporates the variation on the high-order terms in the near-tip stress solution. The existing failure assessment diagram relies on the leading term characterizing the near-tip stress solutions, and ignores geometry or plasticity-induced constraint variations. A modified J solution is calculated based on the proposed crack interaction factor and integrated into the failure assessment procedure using the failure assessment curve in BS7910 engineering standard.
dc.language.isoen
dc.subjectcoplanar cracks; constraints; failure assessment diagram; pipelines; crack interaction
dc.typeThesis
dc.contributor.departmentCIVIL & ENVIRONMENTAL ENGINEERING
dc.contributor.supervisorQIAN XUDONG
dc.description.degreePh.D
dc.description.degreeconferredDOCTOR OF PHILOSOPHY
dc.identifier.orcid0000-0002-1468-7646
Appears in Collections:Ph.D Theses (Open)

Show simple item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
SeahTT.pdf7.02 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

23
checked on Aug 7, 2020

Download(s)

6
checked on Aug 7, 2020

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.