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  • FAQ: What are the advantages and disadvantages of ultrasonic examination in Non-Destructive Examination (NDE)?

FAQ: What are the advantages and disadvantages of ultrasonic examination in Non-Destructive Examination (NDE)?

   

What are the advantages and disadvantages of ultrasonic examination in Non-Destructive Examination (NDE)?

Frequently Asked Questions

Advantages of ultrasonic inspection as a method of Non-Destructive Examination are:

  • Internal defects can be detected and sized when a validated procedure is applied
  • Thick specimens take no more time to examine than thin ones, assuming correct instrumentation set up
  • Access to only one side of the component is needed
  • There is no radiation hazard in ultrasonic examination, and hence no disruption of work as there is with radiography
  • Volumetric and crack like defects can be detected, irrespective of their orientation

Disadvantages of ultrasonic inspection as a method of Non-Destructive Examination are:

  • A high degree of operator skill and integrity is needed. Hence, the need for trained and certified NDT personnel
  • In most examinations, there is no permanent record of the inspection as there is in radiography, however more recent equipment does offer this facility
  • In certain materials, like austenitic steel, the large grain size found in welds can cause attenuation and this may mask defects
  • Spurious indications, and the misreading of signals, can result in unnecessary repairs, which is why a validated procedure should be applied when carrying out any ultrasonic examination.

Please contact us for more information.