System for nondestructive, ultrasonic testing of test objects

Details System for nondestructive, ultrasonic testing of test objects System for nondestructive, ultrasonic testing of test objects

1977-07-15

1979-11-13

Gill, James J.

Measuring and testing

Vibration

By mechanical waves

73612, G01N 2904

Patent

active

041738985

ABSTRACT:
The system includes a plurality of individually selectable transmitter and receiver channels, a common controller and a common acquisition unit constructed to operate on the basis of parameters which are furnished to the controller and the unit as input signals. Some of the parameters are held in a memory and are withdrawn on the basis of test identification numbers to set up the acquisition unit. The acquisition unit has a transit time counter and two parallel operating looking window generators and several comparator stages, operating under utilization of such parameters. The data as acquired by a test, are accumulated and processed to determine new parameters, if necessary, and feeding them to the memory. The controller conducts the tests on the basis of sequencing the system through a group of test identification numbers, and provides also launch delay and receiving delays on the basis of externally, updatable parameters.

REFERENCES:
patent: 3555889 (1971-01-01), Weighart
patent: 3942358 (1976-03-01), Pies
B.G.W. Yee et al., Computer Automated Ultrasonic Inspection System for Aircraft Forgings, AD775-736, General Dynamics Technical Report AFML TA73-194, Oct. 1973, P1-102, P1-48, supplied as pertinent.
Young et al., Digitally Controlled Ultrasonics for Testing Steel on Line, Non-Destructive Testing, Jun. 1976, pp. 131-135.

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