The inspection process Penetrant is one of the methods most widely distributed non-destructive evaluation. Its popularity can be attributed to two main factors that are relatively easy application and flexibility. This inspection can be applied to almost any type of material whose surface is not extremely rough or porous. Among the materials most commonly inspected by this method include:
- metals (aluminum, copper, titanium steel, etc.)
Penetrant Inspection offers flexibility because it can be used in a diverse range of applications ranging from automotive parts to delicate components of the aviation industry. The penetrant can be applied by aerosol or cotton swab in inspecting faults in specific areas or through baths to inspect areas longest faster.
The penetrant inspection systems have been developed for the inspection of components of considerable dimensions. In this photograph shows how large forged aluminum components used to support one of the engines of the DC-10 model aircraft at the Douglas Aircraft Company in Long Beach are properly introduced to one of these systems, California.
The penetrant inspection is used to detect discontinuities that cause the surface of the components rend. Some of the causes of these discontinuities may be:
- Fatigue damage.
- Temperature damage.
- Wear damage.
- Impact damage.
- Casting or welding defects.