A Remote Tone Burst Pulser Design for Automated Ultrasonic Scanning Systems

In this work,a programmable remote ultrasonic tone burst pulsercircuit design and implementation for Automated Water Squirting Ultrasonic Scanning Systems (AWSUSS) arepresented. This pulser can be configuredby a PC over RS422 communication interfacethusparameters such as pulse frequency, pulse repetition frequency (PRF), number of pulses in a burst,and pulse type (Positive/Negative Squared Waveor Bipolar) are set by user. High-voltage tone burst pulser can be adjusted between ±150V in 300V range. Hardware designof the pulser was made by usingaMicrosemi DRF1400 Class D half bridge MOSFET. Proposed pulser can excite piezoelectric ultrasonic transducers in therange of 0.5 to 15 MHz. The pulser output can provide 300Vpppulses with less than 0.5Vpp rippleduring the operation under load while rise time is less than 16 nS. The remote pulser was used with Mistras ADIPR 1210 digitizer board and successful C-Scan ultrasonic inspection results of aircraft composite parts are reported in this work.
Özdemir A.T., “A Remote Tone Burst Pulser Design for Automated Ultrasonic Scanning Systems”, Journal of Aeronautics and Space Technologies, Vol 11, No 1, PP 87-93, 2018