Ultrasonic NDT system with flashing display alarm

Details Ultrasonic NDT system with flashing display alarm Ultrasonic NDT system with flashing display alarm

1973-12-07

1976-05-11

Queisser, Richard C.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

340248F, G01N 2904

Patent

active

039554058

ABSTRACT:
An ultrasonic non-destructive testing system is disclosed wherein electrical signals from a search unit are displayed to visually represent reflections of ultrasonic waves occurring within a work piece or test material. The system includes means for generating an alarm or warning signal informing the operator that an ultrasonic echo has occurred which indicates a possible defect. The alarm causes the display screen to be flashed "on" and "off" at a slow rate in response to a detected ultrasonic echo which exceeds the critical level. The flashing screen signals the operator to make a closer visual inspection of the display, which appears intermittently as the display is flashed on and off.

REFERENCES:
patent: 3041872 (1962-07-01), Brown et al.
patent: 3053080 (1962-09-01), Colten
patent: 3226976 (1966-01-01), Wood et al.
patent: 3473082 (1969-10-01), Kolodnyckij
patent: 3505665 (1970-04-01), Lasoff et al.
patent: 3756071 (1973-09-01), Dory

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