FIELD: testing materials. SUBSTANCE: device has an ultrasonic transducer, a processing unit for processing the signals from the ultrasonic transducer during scanning the surface of material being tested. The signal processing unit is made in the form of coupled amplitude discriminators, storage units, counter and analogue- to-digital converter. EFFECT: enhanced accuracy due to programming parameters of the signal processing unit. 8 dwg
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Authors
Dates
1994-04-15—Published
1992-06-26—Filed