Ultrasonic thickness measuring method and apparatus

Details Ultrasonic thickness measuring method and apparatus Ultrasonic thickness measuring method and apparatus

G - Physics

01

B

349/41

G01B 17/02 (2006.01) G01H 5/00 (2006.01) G01N 29/07 (2006.01)

Patent

CA 1056047

ABSTRACT OF THE DISCLOSURE: The invention refers to an ultrasonic measuring means ex- hibiting improved stability and calibration adaptability, Ultra- sonic energy signals are transmitted into a workpiece and echo responsive signals are received therefrom. A timing signal having a pulse width commensurate with the workpiece thickness is generated. The pulse width is measured by a time interval averag- ing circuit in combination with a programmable counting means for adjusting the quantity of time interval average measurements required for determining the thickness of the workpiece. The programmable means is adjusted to a value commensurate with the acoustic velocity of the workpiece for causing the output of the apparatus to display the dimension of the workpiece measured.

250735

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