Its an advanced automated computerized UT based NDT technique, used for in-service inspection of welds for heavy walled pressure vessels. TOFD system is capable to scan, store and evaluate flaw indications in terms of height, length and position with greater accuracy.

  • Two probe method – highly damped, short pulse Compression probes are attached in an array at a fixed distance
  • It does not rely solely on reflected sound to provide data; it uses a combination of both reflected and more important Diffracted sound energy

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