Fracture from Fatigue Cracks Installed at Weld Toes of Plate to Plate T-Joints

摘要

This paper presents effects of loading procedures on crack growth and fracture behavior of welded T-joints. Each of welded T-joint specimens was composed of a main plate and rib plate. These Specimens were installed with fatigue cracks at the weld toes. A horizontal load was applied to the rib plate, while tensile loads applied to the ends of the main plate. Two different loading procedures were adopted to test T-joints. The FE analysis was conducted to look into the state of stress and strain at the region near the weld toes. Further this paper evaluates the strength of welded T-joints on the basis of the Failure Assessment Diagram (FAD) using the test results.