Non-Destructive Testing in Pressure Vessel Production (Part Two)
4. Penetration Testing for Pressure Vessels Process Unveiled: Initiates by coating the component surface with a penetrant containing fluorescent or coloring dye, allowing capillary action to facilitate penetration into surface defects. After removal of excess penetrant, an imaging agent is applied to attract retained penetrant in defects. Under a specific light source, the trace of penetrant at defects is displayed, unveiling defect appearance and distribution. Its Major Characteristics...
