Process and device for ultrasonic detection of gas bubbles in a

Details Process and device for ultrasonic detection of gas bubbles in a Process and device for ultrasonic detection of gas bubbles in a

1986-09-30

1988-03-15

Myracle, Jerry W.

Measuring and testing

Vibration

By mechanical waves

376340, G01H 312

Patent

active

047304936

ABSTRACT:
An ultrasonic beam is sent into liquid metal from a transmitting point (3) outside the enclosure (1) containing the liquid metal, the beam is detected outside the enclosure (1) after it has passed through the liquid metal, the amplitude of the ultrasonic waves detected is compared with the amplitude of the transmitted ultrasonic waves and the attenuation of the ultrasounds produced by the passage through the liquid metal which may contain gas bubbles (2) is determined. The device comprises a wave guide (4) metallurgically connected to the enclosure (1). A processing unit (10) connected to the ultrasonic transducers (3, 6) measures the attenuation.

REFERENCES:
patent: 3057189 (1962-10-01), Joy
patent: 3779070 (1973-12-01), Cushman et al.

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