2010 Volume 17 Issue 65 Pages 65_43-65_52
Fatigue tests have been carried out on specimens with welded attachments under plate bending, such as lifting lug and stud dowels. Fatigue crack growth behavior of each type of specimen has been observed by dye and beach marking techniques. The test results show that fatigue crack initiates at weld toe and propagates to about 80% of plate thickness before failure. The fatigue test data under plate bending test are compared with the previous test results. The fatigue strength for bending is also evaluated by using one-millimeter stress method.