What type of testing is commonly used to assess weld integrity?

Non-destructive testing (NDT) methods, such as ultrasonic and radiographic testing, are essential for assessing weld integrity because they allow for the evaluation of welds without causing any damage to the material. These techniques provide valuable insights into the internal and external features of welds, including identifying any flaws, cracks, or inconsistencies within the weld structure.

Ultrasonic testing uses high-frequency sound waves to detect imperfections within the weld, providing a comprehensive view of its integrity. Radiographic testing, on the other hand, utilizes X-rays or gamma rays to create images of the weld, revealing internal defects that may not be visible on the surface. Both methods are widely accepted in the industry for quality assurance and compliance with standards, making them reliable options for ensuring that welds meet safety and performance criteria.

In contrast, while other methods like destructive testing and tensile strength testing provide valuable information about material properties, they involve damaging the weld or specimen, which limits their practical application for routine quality checks. Visual inspection is an essential part of the welding process but may not detect subsurface issues, making it less comprehensive than the NDT methods mentioned.