Which type of weld test is considered non-destructive?

In the context of welding inspection, the V-Notch test is typically a type of destructive testing, wherein a specimen is subjected to a specific load until it fractures, allowing for the evaluation of its mechanical properties and toughness. However, the correct understanding of non-destructive testing involves methods that do not alter or destroy the component being tested, which includes the other options.

Both radiographic tests and ultrasonic tests are non-destructive methods used to detect internal flaws within welds and materials. Radiographic tests employ X-rays or gamma rays to produce images of the welds, while ultrasonic tests use high-frequency sound waves to detect internal defects. Similarly, the magnetic particle test is a non-destructive testing technique that uses magnetic fields to identify surface and near-surface discontinuities in ferromagnetic materials.

Understanding the nature of these testing methods is essential for ensuring that the integrity of the weld is maintained during the inspection process, particularly in high-pressure piping applications where safety is critical.