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Dye Penetrant Examination (PT) is a Non-Destructive Testing method used to detect surface breaking defects, such as cracks, laps, porosity etc., which are unperceivable with the bare eye. The method is rest upon the ability of a fluid to be drawn into a "clean" surface-breaking flaw by smooth action. After a certain time period, unnecessary surface penetrant is displaced and a developer is applied that functions as a "blotter". Color contrast penetrants demand adequate white light whereas fluorescent penetrants are suggested to be used in dark environment and require ultraviolet "black light".
Dye Penetrant Examination is mainly used for clad layer, welds and heat affected zones. Penetrant inspection can be used on any solid material. It is essential that the material is carefully cleaned first; otherwise the penetrant will not be able to get into the flaw. If surface penetrant is not fully removed, misleading indications will result.
Why is NDT important?
When dealing with exploitation licenses and preventive maintenance of technical installations, Non Destructive Testing and Examination are indispensable techniques. NDT/NDE offers the necessary guarantee that quality, expense saving, business security and safety are in order, for both existing and new installations. Non Destructive Testing decreases the risk of leakage or other defects, which increases installations business integrity and safety and saves expenses.
For more information on NDT Dye Penetrant Examination send us your inquiry now.
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