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Ultrasonic testing (UST), uses very short ultrasonic pulse-waves with centre frequencies ranging from 0.1-15 MHz and occasionally up to 50 MHz. The sound waves are transmitted into materials to detect internal flaws or to characterise materials. A common example of this technology is ultrasonic thickness measurement, which tests the thickness of the test object, for example, to monitor pipework corrosion.


Ultrasonic testing is often performed on steel and other metals and alloys. It is a form of non-destructive testing used in many industries including petrochemical, power generation, aerospace, automotive and other transportation sectors.


Main Probes Used

0° 45° 60° and 70° to detect different orientation of flaws within the material, and are used in conjunction with each other to give a more accurate scan of the items tested.



  • High penetrating power, which allows the detection of flaws deep in the part

  • High sensitivity, permitting the detection of extremely small flaws

  • Only one surface needs to be accessible (depending on geometry)

  • Greater accuracy than other NDT methods in determining the depth of internal flaws and the thickness of parts with parallel surfaces

  • The capability of measuring the size, orientation, shape and nature of defects

  • Non hazardous to operations or to nearby personnel and has no effect on equipment and materials within the vicinity

  • Portable


  • Measuring Bridges

  • Steel Structures

  • Moving parts

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