Use of the hardware for NDT

In the experiments below, NDT tests were done on a steel block used for calibration. A dual transducer element was used, with a jumper removed from the board to allow for different TX and RX paths.

Setup

Overview of the results

Unsurprisingly, one will see multiple echoes at different depths, depending on the calibration block.

Example of an acquisition

Raw signal

15mm block

Enveloppe

The enveloppe can be extracted

FFT

And the fourier content of the acquisition verified.