DIGITAL ULTRASONIC FLAW DETECTOR AVGUR Russian patent published in 1999 - IPC

FIELD: instrumentation, ultrasonic flaw detection. SUBSTANCE: to generate image of tested section and to measure dimensions of defect directly flaw detector is supplemented with former 13 of scan of B type, former 17 of VRCH- characteristic and former of ARD- diagram controlled through control unit 1 coupled with inputs to permanent storage 19 and with outputs - to display 12. Preprocessing unit 8 fabricated in the form of filtration circuit 10, circuit of extraction of envelope and commutator that provides for various transmission of signal from amplifier 7 to analog-to digital converter 9 through these circuits which is placed between amplifier 7 and analog-to-digital converter 9. EFFECT: enhanced operational reliability and efficiency of flaw detector. 1 cl, 2 dwg