Non-Contact SWP Stability Estimation Using Laser-Ultrasonic Wave
Contact type detection, one of UT for the detection of defects in welding area, has several weak-points. Proximity type ultrasonic inspection using laser is being studied these days to make up for the weak points of contact type ultrasonic inspection. In this paper, automatic inspection system of the welding area of spiral welding pipe has been developed, of which mechanical characteristic is better than that of circular directional pipes, and executed the proximity ultrasonic inspections using laser. The usefulness of proximity ultrasonic inspection using laser will be verified in this paper through the analysis of the inspection results.
Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi
K. S. Song et al., "Non-Contact SWP Stability Estimation Using Laser-Ultrasonic Wave", Key Engineering Materials, Vols. 321-323, pp. 352-356, 2006