Effect of couplant materials on signal transmission

- The signal response of four different couplant materials, namely acrylic adhesive pads, honey, vaseline and hot glue, when stimulated by ultrasonic signals, was recorded using a laser Doppler vibrometer. A reference measurement without any coupalnt materials on the measuring side was also conducted. The data is stored in the directory "Laser_Doppler_vibrometer_measurements" organized by each couplant material.
- Additionally, the impact of these couplant materials on signal transmission in a piezoelectric sensor was analyzed through acoustic emission measurements. The data is stored in the directory "AE_measurements" sorted for each couplant material.