Solution: Magnetic Flux Leakage (MFL)

Solution: Magnetic Flux Leakage (MFL)

TÜV AUSTRIA BELGIUM NV – Rotselaar

Wingepark 41 3110 Rotselaar Belgium

+32(0)16 39 60 10

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Magnetic Flux Leakage (MFL)Magnetic Flux Leakage (MFL)angle down red

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"MFL is a tube testing technique for inspection of finned ferromagnetic tubes where internal pitting is expected."

MFL is a tube testing technique for inspection of finned ferromagnetic tubes where internal pitting is expected. It is very fast and has a good circular crack detection capability. MFL is an electromagnetic testing technique that magnetizes tube wall using permanent magnets installed in the probe. When a flaw is present, a magnetic flux leaks out the saturated wall thickness and is sensed the probe.

TÜV AUSTRIA proposes in-situ examination. Approximately 350, 6-meter-long tubes can be inspected in one normal working day. As secondary technique, IRIS or endoscopy are mostly proposed. All data is saved, and a report is generated the same day. An alternative technique for inspection of finned tubes is NFT. Less sensitive to external defects, but better in flaw depth evaluation.

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