A comparison of failure assessment diagram options for Inconel 690 and Incoloy 800 nuclear steam generators tubes

Bergant, Marcos Antonio; Yawny, A.; Ipiña, Juan E. Perez

doi:10.1016/j.anucene.2020.107310

Cited by 7 publications

(1 citation statement)

References 18 publications

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“…The FAD method was used by [22] to assess welded oilfield drill pipes [23], and the FAD was applied to examine the structural integrity of steam generator tubes. This diagram was used as a tool that can reduce the conservative nature of traditional plastic limit load analysis [24]. There are some research works that generated the FAD by applying XFEM in order to evaluate the failure of a gas cylinder [25].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Crack Behaviour in Pipeline System Using FAD Diagram Based on Numerical Simulation under XFEM

et al. 2020

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For a long time, cracked structures have triggered various researchers to develop a structural integrity approach and design models to address the fracture problems. In the present study, a pipeline with an axial semi-elliptical surface defect was examined in detail. Recent works have highlighted the use of the classical finite element method (CFEM) as numerical tools to solve the fracture mechanics; however, this approach comes with a few difficulties in the modelling aspects. To overcome this issue, we proposed the use of the extended finite element method (XFEM), which was implemented in the commercial version of Abaqus software. Moreover, we have used the results based on this technique in the volumetric method to estimate the stress intensity factors (SIFs). Then, this parameter was employed to build the failure assessment diagram (FAD). The FAD curve was used in the current investigation because it is one of the conventional methods for the evaluation of flaws in steel pipes. The XFEM simulations enable us to draw an FAD curve that can be used as a practical reference for defect evaluation in pipeline systems in the industrial world.

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