MECHANIZED ULTRASONIC TESTING METHOD FOR CURVED PIPE WELDING ZONE

摘要

The present invention, as an inspection method capable of replacing RT used for inspecting an inner side of a welding zone of a curved pipe, relates to an ultrasonic inspection method for a welding zone of a curved pipe embodying a new concept which can quickly and quantitatively evaluate on defects incapable of being detected under conditions (thickness and irradiating direction) of an object to be tested, which is a weak point demonstrated in the RT, using a phased array ultrasonic testing (PAUT) and a time of flight diffraction (TOFD) at the same time.