AUT inspection of welding seam of cladded composite steel pipe

This paper analyzes the difficulties in the detection of lining composite materials. Based on the phased array AUT detection technology, a series of welding defects were made, and the AUT detection results of defects and the macro sectioning results of defects were compared and analyzed. The detection rate and quantitative accuracy of defects at different positions were evaluated, and the reliability of AUT detection of lining composite welds was verified.