The Liquid Penetrant Method is used to detect discontinuities which are open to the surface of the material being examined. This method may be used on both ferrous and nonferrous materials. Liquid Penetrant examination may be used for the detection of surface discontinuities such as cracks, seams, laps, cold shuts, laminations and porosity. We can provide both visible and fluorescent Liquid Penetrant Examination Services.
Scientific Principles
Penetrant solution is applied to the surface of a clean 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 is spread out and forms an indication. The indication is much easier to see than the actual defect.
Main Uses
Used to locate cracks, porosity, and other defects that break the surface of a material and have enough volume to trap and hold the penetrant material. Liquid penetrant testing is used to inspect large areas very efficiently and will work on most non-porous materials.
Main advantages
Since 2010, Ned Marine Services BV has delivered maritime, offshore, and industrial solutions. Anchored in expertise, certified, fit for purpose. Let us know what you need.