Home >> Services >> Ultrasonic Flaw Detection
We offer onsite flaw detection services for inspection of structures, components, welds etc. We are equipped with state of art digital flaw detectors and our technicians are well qualified, certified for reliable & faster inspection.
In ultrasonic testing, high frequency sound waves created by a vibrated crystal in probe are transmitted into a material to detect imperfections or to locate changes in material properties. The most commonly used ultrasonic testing technique is pulse echo where-by sound is introduced into a test object and reflections (echoes) from internal imperfections or the part's geometrical surfaces are returned to a receiver. This method is very sensitive to detect crack type defects but requires extensive training for operator to interpret the result.
Applications :
  • Most weld discontinuities including cracks, slag, lack of fusion, lack of bond, accurate thickness measurement possible
  • To measure intergranular corrosion quantitatively

Advantages :
  • Most sensitive to planar type defects
  • Test results known immediately
  • High penetration capability
  • Requires access from only one surface

Limitations :
  • Surface condition should be suitable for coupling of transducer
  • Couplant (liquid) required
  • Small, thin welds may be difficult to inspect
  • Reference standards are required
  • Requires a relatively skilled operator / inspector, and skilled interpretive personnel
  • Resolution of small defects near surface difficult