25 Nov Dye penetrant testing
Dye penetrant testing (also known as liquid penetrant testing or inspection) is a method to detect surface-breaking flaws such as cracks, porosity, laps etc. This inspection method relies on the process of capillary action where the liquid dye (or penetrant), which has a low surface tension, is drawn into the discontinuity/defect/flaw. The excess penetrant is then removed, and a developer powder is applied to draw out any residual penetrant which remains present in the flaw. Cracks as narrow as 150 nanometres can be the detected.
Dye penetrant inspection can be carried out on any non-porous material, metallic or non-metallic however it is unsuitable for very rough or dirty surfaces.
Here at PTS, we have highly experienced certified personnel who can provide several services.
We have ISO 9712 Level 2 certified engineers who can perform dye penetrant inspection, including fluorescent and colour contrast techniques, either on-site or in our laboratory using our bespoke dye penetrant equipment, capable of inspection a high number of items at once.