Another method of testing materials for surface discontinuities would be that of Penetrant Testing. Just as with Magnetic Particle Testing the visible contrast as well as the Fluorescent Penetrant methods can be applied to customer parts for detection of open to the surface discontinuities.
Our technicians also make use of portable kits to conduct this method on components of any shape and size. Surface preparation plays a vital role as the slightest unnecessary dirt on the surface will cause the penetrant to adhere to the surface and be displayed on the results as possible flaws. It is usually preferable to have the components machined and in the case of welds, the slag or scale needs to be removed first. Penetrant testing is also usually conducted on non-magnetic types of materials as they cannot be tested by the Magnetic Particle Testing method.