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|Title:||Stress intensity factors for semi-elliptical surface cracks in plate-to-plate butt welds with parallel misalignment of same thickness||Authors:||Zhao, Hai Sheng
Lie, S. T.
|Keywords:||Finite element analyses
Misaligned butt welds
|Issue Date:||2017||Source:||Zhao, H. S., Lie, S. T., & Zhang, Y. (2017). Stress intensity factors for semi-elliptical surface cracks in plate-to-plate butt welds with parallel misalignment of same thickness. Marine Structures, 53, 148-163.||Series/Report no.:||Marine Structures||Abstract:||A set of fatigue and fracture assessment equations had been incorporated into British Standard 7910:2013 (BS 7910:2013) to estimate the effect of misalignment for various geometric configurations containing a surface crack. In this study, extensive 3-D finite element (FE) analyses are carried out to determine the dimensionless stress intensity factors (Y) at the crack deepest point and crack ends of plate-to-plate butt welds with parallel misalignment of same thickness. In comparison to BS 7910:2013, it is observed that the assessment equations underestimate the Y values for shallow cracks and overestimate the corresponding values for deeper cracks with percentage differences in values being as high as 82% and 12%, respectively. New Y equations for misaligned butt welds are proposed using multiple regression analyses.||URI:||https://hdl.handle.net/10356/82955
|ISSN:||0951-8339||DOI:||http://dx.doi.org/10.1016/j.marstruc.2017.02.005||Rights:||© 2017 Elsevier Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Marine Structures, Elsevier Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.marstruc.2017.02.005].||metadata.item.grantfulltext:||open||metadata.item.fulltext:||With Fulltext|
|Appears in Collections:||CEE Journal Articles|
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