What type of non-destructive testing (NDT) can be performed during welding?

Non-destructive testing (NDT) plays a crucial role in ensuring the quality and integrity of welds during and after the welding process. Visual inspection, which involves examining the welds for obvious defects such as cracks, porosity, and any surface abnormalities, is one of the simplest and most commonly used methods. This inspection can be carried out throughout the welding process to identify issues early on, which can prevent further problems.

Radiographic testing, which involves using X-rays or gamma rays to create images of the weld area, helps to identify internal flaws that may not be visible to the eye. This method can also be employed at various stages of the welding process to ensure that the welds meet the necessary standards.

By combining both visual inspection and radiographic testing, a more thorough assessment of the weld quality can be achieved, enhancing safety and reliability in critical applications. Thus, recognizing the value and applicability of both of these NDT methods during welding solidifies the rationale behind selecting the option that encompasses both testing types.