Ultrasonic Testing of T-Joint Fillet Weld in Steel Construction

In order to control the internal quality of T-joint fillet weld effectively, the feasibility of ultrasonic testing method for T-joint fillet weld was verified through theoretical analysis and reliability experiments. Suitable probe angle was chosen. For judging defect simply, the A-R and A-S curves were designed and drawn. And testing technique and criteria for evaluation of defect were written.