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To study the influence of surface fatigue cracks on the static strength of circular tubular T-joints, experimental
tests on four full-scale circular tubular T-joints are carried out. Firstly, surface fatigue cracks are prefabricated by fatigue
test in three circular tubular T-joints. Thereafter, experimental tests on the static strength of all the circular tubular T-joints
with and without fatigue cracks under axial tension are carried out. Through the comparative analysis, the influences of
the fatigue crack on the failure mode and the static strength of circular tubular T-joints are concluded.