Ultrasonic inspection is a nondestructive method for detecting defects within a material. This method is based on the transmission and reflection of ultrasonic wave type within a material.

Ultrasonic testing is often used when looking for corrosion as well as when looking for indications of crack, inclusion / porosity, delamination, lack of fusion and others in molded, forged or welded parts.

An ultrasonic wave is emitted using a probe coupled to an ultrasound station which allows the reading of an echo on a time and amplitude scale (A-scan). The echo peak read on the A-scan by a qualified operator allows him to deduce that the ultrasonic wave, emitted and received by the probe, has been reflected by a wall or an indication and will be able to give a result.