Testing concrete using air-coupled ultrasound between 250 and 500 kHz.

This week at ITEAM, Universidad Politecnica de Valencia, we obtained remarkably good SNR in through transmitted signals in concrete samples (40-200 mm thick) with ITEAM equipment and samples and using our wide-band air-coupled transducer with center frequency at 250 and 500 kHz. Yes this is the first arrival shown at the scope (using a short tone burst excitation), hard to believe!!!

Further expanding the range of applications of non-contact ultrasonic techniques… IMG_20171125_193743