Boresonic inspection system

Details Boresonic inspection system Boresonic inspection system

1988-02-25

1989-09-12

Levy, Stewart J.

Measuring and testing

Vibration

By mechanical waves

73 1DV, G01N 2904

Patent

active

048648620

ABSTRACT:
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.

REFERENCES:
patent: 4203315 (1980-05-01), Vieu et al.
patent: 4309904 (1982-01-01), Jones et al.
patent: 4331021 (1982-05-01), Lopez et al.
patent: 4567747 (1986-12-01), Matay

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