ROUND ROBIN TEST OF AUTOMATIC ULTRASONIC TESTING SYSTEMS OF COLLABORATIVE STUDY ON NONDESTRUCTIVE EVALUATION OF WELDED JOINTS OF STEEL BRIDGES

Abstract

Ultrasonic test will be applied to evaluate welded joints of steel bridges. As the recent tendency of bridge construction, 2 or 3 main girder bridges are constructed. Flange plates of those bridges are welded at site. Automatic ultrasonic test (AUT) will be applied for the evaluation of field welded joints. However, there are not appropriate specifications for AUT. A collaborative study was started. The final goal of the study is establishment of AUT specifications for welded joints of steel bridges based on performance-based design. As the step of the study, round robin test was carried out. This paper describes the outline of the round robin test.