The ultrasonic immersion test uses a long liquid delay line – generally water mixed with surfactants and antioxidants – to separate the signal entering the material from the one exciting the transducer, thus reducing the dead zone and maximizing resolution. It also prevents the operator’s manual skill from influencing results as well as the transducer’s wear.
This method is most frequently applied in the aeronautical industry.
This ultrasonic inspection technique places the probe/probes in direct contact with the part to be inspected. The ultrasonic wave is transmitted through an acoustic couplant placed on the inspection surface. Transparent or reflective techniques can be used according to inspection conditions.
This method is used in all types of industrial applications.
Automatic water-squirting ultrasonic system for inspecting details through the transmission or reflection technique.