Orbital welding is a widespread process used in the aerospace industry to produce high quality joints in fuel lines, brake lines, hydraulic lines, among other applications. The integrity of these welds is critical; a small defect could cause a leak and pose a major safety issue. To ensure the reliability of rockets and aircraft, non-destructive inspection is used to ensure the quality of the joint and prevent weld failure.
Currently, penetrant testing and radiography are the most widespread method
Source: NDT
