EVALUATION ON THE FATIGUE STRENGTH OF SINGLE-SIDED WELDED JOINTS WITH CERAMIC BACKING MATERIAL

This report presents S-N testing results of the butt and T -joint weldment which are produced by single sided welding with cenramic backing material. The specimen is designed in accordance with JIS Z 3103 and the test is performed by the JSME S002. The nominal and hot spot stress based design S-N curves derived from fatigue tests are compared with the BS design curve. For butt and T-joint, it can be known that the double-sided butt welding process could be replaced by the single sided butt welding.