Phased Array Ultrasonic Testing for Hydrogenation Reactor Convex Platform Welding Layer Crack

Through experimental research,the application of phase array ultrasonic testing technology (PA) in the crack detection for hydrogenation reactor convex platform overlay welding was realized. The minimum measurable crack height of 2 mm(test block)/3 mm(workpiece) was achieved, and the crack height measurement error was less than 1.0 mm .The technology could be applied to the convex platform overlay welding crack detection of many specifications.