Distance amplitude compensation system

Details Distance amplitude compensation system Distance amplitude compensation system

G - Physics

01

N

349/42

G01N 29/04 (2006.01)

Patent

CA 1109144

ABSTRACT A distance amplitude compensation system is disclosed herein for comparing received signals with a reference signal having a time varying amplitude. The preferred embodiment of the invention disclosed herein is particularly adapted for use in an ultrasonic nondestructive testing system to vary the reference signal of the system as a function of time to compensate for variations of the echo signal produced by changes in the amplitude of the ultrasonic energy as it propagates through the workpiece as a result of attenu- ation or other causes. A pulser/receiver transmits ultrasonic signals into the workpiece, receives echo signals returned therefrom and produces received signals corresponding to the echo signals. A

289416

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