NKK developed a new, automatic ultrasonic flaw detection system for the weld seams of UOE pipes. Features of the new system include (1) two manipulators with up to 20 channels of simultaneous inspection, (2) a highly sensitive detection technique for minute center defects, and (3) a highly accurate seam-tracking sensor. The system is designed to fully meet diverse and strict customer requirements for high-quality products.

NDI, Ultrasonic testing, UOE pipe, Weld inspection, Signal processing, Chirp pulse compression, Seam tracking