Probability of survival of welded Pipeline X-joint ;High cycle fatigue case in Abaqus and FE-SAFE

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The study aims to assess the integrity of welded X joint under thermal load. The welding of the joint is carried out using DFLUX subroutine. The stress increment corresponds to end of the welding is imported into FE-SAFE. FE-safe is a software by DASSAUL SYSTEM used for assessing fatigue reliability of the structure. Afterward, the probability of the welded joint is analyzed for different load variance. Result shows that for high load, at later stage the probability is low as compare to early stage which depicts the fatigue reliability of structure.