Very short Ultrasonic pulse-waves are utilized in Ultrasonic Testing. These have center frequencies ranging from 0.1 MHz-15 MHz and it can also raise up to 50 MHz on certain occasions. The pulse-waves are penetrated into specimen to categorize materials or to detect internal defects. Thickness of the test material such as monitor paperwork, is determined by the Ultrasonic thickness measurement test. Ultrasonic testing is commonly performed on different types of alloys like steel and metals and alloys such as steel. Although less resolution, it is also suitable for thickness test of concrete, composites and wood. Many transportation related industries like aerospace, automotive , etc., utilize this non-destructive testing or NDT method. The transducer performs both the receiving and the sending of the pulsed waves in pulse echo mode. In this process, the "sound" is reflected back to the device when coming in contact with any interference, such as object's back wall or the imperfection in the structure of the object. The diagnostic machine produces results in the form of a signal along with an amplitude which denotes the reflection intensity and the distance, representing the reflection arrival time.
Automated systems generate detailed images.
Highly automated or portable operation capability.
High sensitivity, permitting the detection of extremely small flaws.
Greater accuracy than other nondestructive methods in determining the depth of internal flaws and the thickness of parts with parallel surfaces.
Some capability of estimating the size, orientation, shape and nature of defects.
Non hazardous to operations or to nearby personnel and has no effect on equipment and materials in the vicinity.
Capable of portable or highly automated operation.
It is sensitive to both surface and subsurface discontinuities.