Dye Penetrant Testing (DPI) or Liquid Penetrant Testing (LPI) as it is also commonly referred to, is widely used throughout various industries when it is necessary to detect surface breaking flaws in components, structures and non-porous materials. The process can be safely and effectively used on both ferrous and non-ferrous materials although when inspecting ferrous materials, Magnetic Particle Inspection (MPI) is generally the preferred option.
Dye Penetrant Testing can be divided into two distinct categories – Fluorescent and Colour Contrast and both of these categories can be further sub-divided into the means by which they are removed from the surface to which they have been applied eg: Water washable or Solvent removable. All Penetrant systems are ideally suited to the inspection of ‘batch’ quantities or large surface areas or components of complex geometry and we will be pleased to discuss with you and advise the most appropriate inspection method for your particular requirement.
Whether used ‘on-site’ or in a Test Facility, Penetrant Inspection has, for many years, proven itself to be a highly efficient, cost effective, reliable and safe solution for detecting surface breaking flaws/faults provided that correct procedures are followed prior to, and during its application.