New weld toe magnification factors for semi-elliptical cracks in double-sided T-butt joints and cruciform X-joints
Source abstract
Abstract
Abstract British Standard BS7910:2005 has a single set of equations for estimating the weld toe magnification factor ( M k ) of different types of welded joints containing a surface crack. The equations are based on the finite element (FE) results of single sided T-butt joint. In this study, extensive FE analyses are carried out to determine the M k of double-sided T-butt joint and cruciform X-joint. Both the joints are subjected to axial and bending loading, and M k at crack ends and deepest points of the surface crack are determined. It is found that M k results for cruciform X-joint differ with those of double-sided T-butt joint with percentage difference in values being as high as 136% and 76% for axial and bending loading cases, respectively. Finally, a new set of M k equations for cracked double-sided T-butt joint and X-joint are proposed based on multiple regression analyses.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · Structural Load-Bearing Analysis · Mechanical stress and fatigue analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (14)
Show source-provided references
1. Zhang YH, Maddox SJ, Razmjoo GR. Experimental study and prediction of fatigue crack growth in girth welded pipes. In: Proc twenty-first int conf offshore mech arctic engng, Oslo, Norway; 2002. p. 525–33.10.1115/OMAE2002-28595 ↗
2. An analysis of fatigue cracks in fillet welded joints10.1007/BF00038890 ↗
3. PD 6493. Guidance on methods for assessing the acceptability of flaws in fusion welded structures, British Standards Institution, UK; 1991.
4. Weld magnification factors for semi-elliptical surface cracks in fillet welded T-butt joint models10.1007/BF00017283 ↗
5. Two-dimensional and three-dimensional magnification factors, Mk, for no-load-carrying fillet welds cruciform joints10.1016/S0013-7944(99)00136-8 ↗
6. Prediction of weld toe magnification factors for semi-elliptical cracks in T-butt joints10.1016/S0142-1123(00)00012-8 ↗
7. BS7910-Amendment 1. Guide to methods for assessing the acceptability of flaws in metallic structures, British Standards Institution, UK; 2005.
8. AWS D1.1–00. Structural welding code: Steel. American Welding Society (AWS), USA, 2000.
9. Notch stress intensity factors and fatigue strength of aluminium and steel welded joints10.1016/S0142-1123(00)00086-4 ↗
10. FEACrack™. User’s manual, Version 3.2, Quest Integrity Group LLC, USA; 2010.
11. Plastic collapse load prediction and failure assessment diagram analysis of cracked circular hollow section T-joint and Y-joint10.1111/ffe.12115 ↗
12. Lie ST, Vipin SP, Li T. A new mesh modelling technique for elastic-plastic analyses of cracked plate-to-plate and circular hollow section welded joints. In: Proc eleventh int conf steel space composite structures, Qingdao, China; 2012. p. 259–68.
13. ABAQUS. Standard user’s manual, Version 6.11, Hibbett, Karlsson & Sorensen Inc, USA; 2011.
14. Bowness D, Lee MMK. Fracture mechanics assessment of fatigue cracks in offshore tubular structures. Offshore Technology Report 077, Health and Safety Executive, UK; 2000.