Review on fatigue life prediction models of welded joint

Fatigue assessment of welded joint is still far from being completely solved now, since many influencing factors coexist and some important ones should be considered in the developed life prediction models reasonably. Thus, such influencing factors of welded joint fatigue are firstly summarized in this work; and then, the existing life prediction models are reviewed from two aspects, i.e., uniaxial and multiaxial ones; finally, significant conclusions of existing experimental and theoretical researches and some suggestions on improving the fatigue assessment of welded joints, especially for the low-cycle fatigue with the occurrence of ratchetting, are provided.