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Keywords: sif
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Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-4159
... This paper presents a practical method to evaluate the stress intensity factor (SIF) for welded plate joints with a semi-elliptical surface crack, based on the 2D weight function. According to the expression initially proposed by Wang & Glinka (2009), an improved 2D weight function for...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-215
... to the convergence results. The calculation results show that the SIF of crack tip is affected by several factors such as aspect ratio, crack depth and load form in different level. By the comparison of SIF results of uniaxial and biaxial load, a new magnification factor is proposed in this paper...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-424
... objects, and series of values of MCOD and stress intensity factor (SIF) at the deepest point are obtained by finite element method. Subsequently, by the proposed method to calculate SIF by MCOD for the surface cracked finite plate model and various parametric effects analysis, the explicit expression of...
Proceedings Papers

Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-453
... ABSTRACT: The SIF of a surface crack in weld can be calculated by using Influence Factor Method (IFM) developed by Shiratori et al. (1986). In this study, a full-automated Influence Factor (IF) calculation software system is developed. The validity of the developed system is examined by...
Proceedings Papers

Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-193
... finite element is used to make the local model using automatic mesh generation software. In the zooming method, global model deformation is enforced to the local model as the displacement boundary condition. Stress intensity factors (SIFs) are calculated by Virtual Crack Closure-Integral method (VCCM...
Proceedings Papers

Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-436
... ABSTRACT In order to obtain the distribution of stress intensity factor (SIF) along thickness direction for the central through cracked finite thickness plates in tension, the paper proposes a new method to calculate SIF based on maximum crack opening displacement (MCOD). In this method, the...
Proceedings Papers

Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-519
... In this study, evaluation of stress intensity factors (SIFs) has been carried out to the defects in welded joint structures. There are many welded joints in marine structures. It has possibilities that fatigue defects are initiated in the welded joint structures under severe conditions. It is...
Proceedings Papers

Paper presented at the The Sixteenth International Offshore and Polar Engineering Conference, May 28–June 2, 2006
Paper Number: ISOPE-I-06-385
... ABSTRACT The stress intensity factor (SIF) of surface crack in a welded joint of fillet type is evaluated using the finite element alternating method (FEAM). FEAM is the method based on the FE analysis, which is in combination with the finite element method and the analytical solution for...
Proceedings Papers

Paper presented at the The Fifteenth International Offshore and Polar Engineering Conference, June 19–24, 2005
Paper Number: ISOPE-I-05-402
... ABSTRACT A 3-D finite element model of a cracked CHS T-joint is developed and will form a basis for future linear elastic fracture mechanics analyses on other thick-walled tubular joints. With this model the Stress Intensity Factors (SIF's) for a thick-walled CHS T-joint with a semi-elliptical...
Proceedings Papers

Paper presented at the The Thirteenth International Offshore and Polar Engineering Conference, May 25–30, 2003
Paper Number: ISOPE-I-03-368
... ABSTRACT Stress intensity factor (SIF) solutions are generally used for fatigue assessment of the cracked tubular joints in steel offshore jacket structures. Reliable SIF solutions are necessary for accurate prediction of the residual fatigue life of such joints. For this purpose, more than a...
Proceedings Papers

Paper presented at the The Twelfth International Offshore and Polar Engineering Conference, May 26–31, 2002
Paper Number: ISOPE-I-02-404
... avoid the contact between the two surfaces that may arise due to some loading cases. Along the crack tip, a well-graded finite element meshes are generated to get the stress intensity factors (SIFs). This modelling method is then used to analyse three tubular T-joint specimens. These full-scale...
Proceedings Papers

Paper presented at the The Twelfth International Offshore and Polar Engineering Conference, May 26–31, 2002
Paper Number: ISOPE-I-02-406
... ABSTRACT This paper presents results of a parametric study on stress intensity factors (SIF) of doubler-plate reinforced connections subjected to outof- plane loading. This type of connection, with a doubler plate fillet welded to a base plate to provide reinforcement, is commonly used in...
Proceedings Papers

Paper presented at the The Eleventh International Offshore and Polar Engineering Conference, June 17–22, 2001
Paper Number: ISOPE-I-01-345
... respectively are generated using this new modelling approach. The contact problems at the crack surfaces are also considered in these models. The finite element analysis results of these models are used to evaluate the stress intensity factors (SIFs) of the cracks. The convergence of the SIFs results...
Proceedings Papers

Paper presented at the The Tenth International Offshore and Polar Engineering Conference, May 28–June 2, 2000
Paper Number: ISOPE-I-00-146
... the sleeve pipe via a single fillet weld. defect loading crack tip offshore pipeline fillet weld pipe-in-pipe system sif crack depth fracture upstream oil & gas weld toe calculation assessment crack growth hydraulic fracturing field joint outer pipe fatigue crack growth...

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