The ultrasonic testing is used to search for weld defects, thickness measurements, research erosion and corrosion, etc..
Ultrasounds are mechanical vibrations of the same nature as sound but high frequency (Field of Use current of 2 to 10 MHz, which propagate through the thickness of materials (metals, ceramics, etc ...).
The ultrasonic non-destructive testing may be applied to research of defects in the bulk or thickness measurements and detection zone of erosion / corrosion.
The material used in this technique is: