he Ultrasonic inspection, identified by the acronym UT, is applied by sending mechanical vibrations into a material and is capable of detecting volumetric discontinuities. The ultrasonic wave, by causing the crystal structure of the inspected material to vibrate, is able to obtain the response echo of any discontinuity located perpendicular to the direction of propagation of the UT beam. Ultrasonic inspection is particularly suitable for searching for all those volumetric discontinuities that may not surface if sufficiently distant from it.