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Abstract

A method for non-destructive testing the teeth of a high power electrical generator rotor includes the steps of: providing a plurality of ultrasonic pulse echo transducers (22, . . . ,25) being arranged in an array (20), and being positioned and aligned in such a way as to provide a range of different inspection angles for the tooth geometry; positioning the array (20) on top of the rotor tooth; exciting at least one of the plurality of ultrasonic pulse echo transducers (22, . . . ,25) to produce a transmission beam for the interrogation of wedge angle on the underside of the tooth; and conditioning the acquired data from the at least one of the plurality of ultrasonic pulse echo transducers (22, . . . ,25) to capture reflection from the flaws within the tooth.

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First Claim