Liquid
Penetrant Testing
Penetrant solution is applied to the surface of a precleaned component.
The liquid is pulled into surface-breaking defects by capillary action.
Excess penetrant material is carefully cleaned from the surface. A developer
is applied to pull the trapped penetrant back to the surface where it
spreads out and forms an indication. The indication is much easier to
see than the actual defect.
FPI Webpage -
Engineering Assessment of Fluorescent Penetrant Inspection
Copyright © 2002
For more information about CASR please contact:
Lisa Brasche
Iowa State University
casr@cnde.iastate.edu