Automatic production control of extended work pieces

Details Automatic production control of extended work pieces Automatic production control of extended work pieces

1982-08-24

1984-12-11

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

73599, 73620, 73628, G01N 2904

Patent

active

044870701

ABSTRACT:
An ultrasonic defect monitor for a moving workpiece is disclosed, including first and second test probes on opposite sides of an area of interest. The detected signals are processed for display by both a threshold monitor circuit, and an integrator-threshold-monitor circuit each connected to an output indicating unit for providing defect indications.

REFERENCES:
patent: 3274822 (1966-09-01), Stanya
patent: 3552191 (1971-01-01), Heseding
patent: 3791199 (1974-02-01), Toth et al.
patent: 3888114 (1975-06-01), Adams, Jr. et al.
patent: 4137779 (1979-02-01), Wustenberg et al.
patent: 4305297 (1981-12-01), Ries et al.
patent: 4395911 (1983-08-01), Macecek

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