FATIGUE STRENGTH OF TUBULAR-T AND X-JOINTS

The results of fatigue tests on 40 tubular T- and X-joints are presented. The chord diameters of the joints are 168, 457 and 914 mm. The most important conclusions are that the lifetime decreases with increasing joint size and that in the high cycle range (N 107) some test results of the large joints fall below the AWS-X curve.