G - Physics – 01 – N
Patent
G - Physics
01
N
349/33, 349/35
G01N 29/04 (2006.01) F01D 21/00 (2006.01)
Patent
CA 1303721
ABSTRACT OF THE DISCLOSURE 53,451-B-2 An immersion based ultrasonic inspection system is disclosed which is used to interrogate the bore and near bore material of turbine and generator rotors by passing ultrasonic search units through the rotor bore. This system utilizes variable focus array inspection transducers in a shear mode inspection of the near bore material. The flaw location method includes recording calibration transit times and transducer locations for calibration holes from which refraction angles, and material velocities are determined. When a flaw is detected the surface time for a bore surface reflection, the flaw reflection time and transducer position are used to determine the position of the flaw.
615984
Michaels Jennifer E.
Michaels Thomas E.
Nottingham Lawrence D.
Bereskin & Parr
Michaels Jennifer E.
Michaels Thomas E.
Nottingham Lawrence D.
Westinghouse Electric Corporation
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