Ultrasonic Testing (UT)
Ultrasonic testing (UT) is a family of non-destructive testing techniques based on the propagation of... View more
Pulse Compression for improved Signal-to-noise Ratio in Ultrasonic Testing
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Pulse Compression for improved Signal-to-noise Ratio in Ultrasonic Testing
You were talking about the advantages of Pulse Compression. What are the drawbacks of the Pulse compression in comparison to normal excitation?
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1 Reply
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There are two main disadvantages;
1) It requires much more flexibility in the excitation hardware, ideally the signal source and/or amplifier needs to be able to generate arbitrary waveforms. This is not typically possible with conventional UT hardware (basic pulsers).
2) The received signal must also be post-processed (digitally) before it can be viewed. Although this is not such as huge disadvantage since this is also the case for many modern NDT methods (e.g. FMC TFM).
