3D total focusing phased array ultrasonic testing of welded joints of large diameter thick-walled austenitic stainless steel pipes

The total focusing method(TFM) 3D phased array ultrasonic testing technology based on full matrix capture(FMC) is introduced, and some examples of its application for the detection of welded joints of large diameter thick-walled austenitic stainless steel pipes are given, which is expected to provide reference for the related application of 3D full focus phased array ultrasonic testing.