Liquid Penetrant Inspection (LPI)

R.N DUCS INTERNATIONAL LIMITED uses visible light with adequate intensity of about 1100lux for visible liquid penetrant. The penetrant may be applied to all non ferrous materials and ferrous materials; although for ferrous component, magnetic particle inspection is often used instead of its subsurface detection capacity.

Liquid penetrant inspection is used to detect casting, forging and welding, surface defects such as surface porosity, leaks in new products and fatigue cracks on service components.