Detection of corrosion fatigue cracks in membrane boiler tubes

Details Detection of corrosion fatigue cracks in membrane boiler tubes Detection of corrosion fatigue cracks in membrane boiler tubes

G - Physics

01

N

G01N 29/24 (2006.01) G01N 29/10 (1995.01)

Patent

CA 2127727

A method for detecting corrosion fatigue cracks in membraned boiler tubes in a membrane tube panel employs at least one EMAT coil generating ultrasonic SH shear waves at a predetermined beam angle. The method of the present invention provides better signal-to-noise ratios than conventional ultrasonic techniques as well as not requiring any couplant.

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