Abstract: A metal section removing tool (10) separates a section of metal from a metal object (M) such as a turbine rotor. The tool (10) separates an elongated section of metal from the object using a pivotally mounted cutting device (16) that cuts along a cutting arc ("B") with cutting arc axis ("A") aligned parallel to the longitudinal axis of the cutting device. Preferably, the tool (10) uses electric discharge machining to separate the metal section from the object (M). The tool (10) also includes channels (48, 50) formed in the cutting device (16) for directing the flow of a dielectric fluid to a cutting edge of the cutting device (16). The cutting method includes first securing a carriage at a fixed position with respect to the object and then pivoting the cutting device along the cutting arc ("B") to separate a section of metal from the object (M).

Abstract: An ultrasonic inspection apparatus is adapted for utilizing both pitch/catch and pulse/echo information obtained utilizing a single mode of wave propagation. The apparatus includes an ultrasonic signal transmitting assembly, a signal receiving assembly, a positioning mechanism, and an arrangement for recording the information received by the signal receiving assembly. The transmitting assembly includes at least one source transducer for transmitting shear mode ultrasonic search signals into the mass of an object to be inspected. The signal receiving assembly receives shear mode ultrasonic catch signals that are produced as the ultrasonic search signals encounter discontinuities in the mass of the object to be inspected and are directed toward and detected by at least one catch transducer. The signal receiving assembly also receives shear mode ultrasonic echo signals that are directed back to a first source transducer.