Brothers Inspection offering the following NDT (Non Destructive Testing) Services:- Positive Material Identification(PMI), Ultrasonic Testing, Radiograpy Testing, Magnetic Particle Testing , Dye Penetrant Testing and many more of Non Destructive testing available from Us. Although we support our client projects with many more NDT disciplines (see our list under Specialist manpower) these are the main NDT services offered independently on a project basis.
The technique of Dye Penetrant Inspection is based on the ability of a liquid to be drawn into a
clean surface-braking flaw by capillary action. After a period of penetration time, excess
surface penetrant is removed and a developer applied. This draws the penetrant from the flaw
to reveal its presence. Colour contrast penetrant requires good white light while fluorescents
need to be used in darkened conditions with an ultra violet light (Also known as Black Light).
It is essential that the material is carefully cleaned first, other wise the Dye Penetrant Inspection
penetrant will not be able to enter the defect. If surface penetrant is not fully removed,
misleading indications will result.