Dye Penetrant Inspection (PT) (DPI)
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Minumum depht of a discontinuaty to be detected by dye penetrant testing
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Minumum depht of a discontinuaty to be detected by dye penetrant testing
Hello,
please tell, which is the minumum depht
(in microns) of a discontinuaty in steel to be detected by dye penetrant testing?I see (without a magnifying glassa) a crack (length is 5 mm) on perfectly cleaned tested surface, but using of dye penetrant testing does not give an indication. I understand, that it is a surface crack and want to know what is the minimum depht of a discontinuaty to be detected by dye penetrant testing.
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1 Reply
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Penetrant Testing is not meant to establish the depth of a defect that is open to the surface. If you really want to know the depth of a surface indication, I recommend using Eddy Current or Ultrasonic Inspection.
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