Ultrasonic testing is one of the most common methods for the non-destructive inspection of materials. One of the biggest advantages of this method is that it does not harm the human operator. Ultrasonic testing uses mechanical vibrations, in the form of ultrasonic waves, to search for internal discontinuities; the working principle is similar to the sonar technology, which was actually the predecessor to ultrasonic flaw detectors. Today, the technique is well established in the industry, having been used si
Source: NDT