Ultrasonic velocity measuring method and apparatus

Details Ultrasonic velocity measuring method and apparatus Ultrasonic velocity measuring method and apparatus

1977-10-07

1978-09-19

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

73629, G01N 2900

Patent

active

041144554

ABSTRACT:
In a pulse echo ultrasonic velocity measuring apparatus timing gate signals corresponding to the transit time of search signals traveling through a workpiece are generated. The quantity of fixed frequency pulses occurring during successive timing gate signals is counted and accumulated using time interval averaging techniques until a predetermined quantity of pulses commensurate with the thickness of the workpieces is accumulated. Concurrently, the quantity of search signals required to accumulate the predetermined quantity of pulses is counted. The quantity of search signals counted is commensurate with the acoustic velocity of the workpiece.

REFERENCES:
patent: 3848460 (1974-11-01), Bantz et al.
patent: 3985022 (1976-10-01), Dileo et al.
patent: 3994154 (1976-11-01), Niklas

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