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NDT.net Issue - 2014-04 - NEWS

Circumferential cracking is very difficult to detect and characterize with standard eddy current bobbin probes.


Eddyfi56, Quebec, Canada
 
NDT.net Journal
Issue: 2014-04
That's mainly because eddy currents generated by bobbin probes flow parallel to circumferential cracks.

Bobbin probes are also sensitive to ferromagnetic interference generated by tubesheets and support plates of heat exchangers. The large signals generated by these structures usually mask the small signals from circumferential cracks. Bobbin probes are also sensitive to liftoff, such as the one found in expansion transitions. This is where the patented DefHi® eddy current array probe comes in.

Eddyfi

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2017-12-01: Recent advances in Pulsed Eddy Current signals analysis for compensation of mass effects
2017-12-01: Near Field Array for Complete Inspection of Ferromagnetic Stainless Steel Tubing
2017-12-01: Heat Exchanger Tubing: Extending The Reach Of IRIS Inspections
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All 55 Articles & News of Eddyfi in NDT.net

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