Guided Wave Ultrasonic Inspection

MES offers rapid inspection by guided wave ultrasound.

Guided Wave testing (GWT) is one of latest methods in the field of NDT for evaluation of corrosion damage and other defects in elongated structures, such as pipelines and buried anchor rods. The method employs mechanical stress waves that propagate along an elongated structure while guided by its boundaries. This allows the waves to travel a long distance with little loss in energy.

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The Wavemaker™ Pipe Screening System uses low to medium frequency guided ultrasonic waves that propagate along the structure and is designed for rapid screening of long lengths of pipe/rod to detect external or internal corrosion as well as axial and circumferential cracking. This is composed of three primary components, the transducer ring, the Wavemaker™ G4 instrument, and the controlling computer.

Data is collected via transducer rings, which use mechanical or pneumatic pressure to dry couple piezoelectric transducer elements to the pipe/rod being inspected. Long lengths of pipe/rod are examined from one location, which allows difficult to inspect areas to be screened with ease with minimal surface preparation.

  • Buried pipe
  • Insulated pipe up to 340°C
  • Buried anchor rod
  • Boiler tubes
  • Road and rail crossings
  • Inspection of 100% of pipe/rod volume
  • Rapid identification of corrosion damage in buried or covered structures
  • Ability to detect corrosion and other defects
  • Monitoring for corrosion over time
  • Collect corrosion data at difficult to access areas
  • Portable equipment
  • Sample Diameter Sizes – 1″ to 40+” diameter
  • Removal of about 1 meter of insulation
  • Surface preparation to scrape off loose paint or scale
  • ASTM E 2775