What does the guided bend test assess in a welded joint?

The guided bend test is a crucial assessment method used to evaluate the integrity of a welded joint. It specifically measures the ductility and soundness of the weld. This test involves bending a specimen in a manner that exposes the inner surface of the weld to determine how well the material can withstand deformation without cracking.

Ductility refers to a material's ability to deform under tensile stress, which is essential in ensuring a joint can absorb stress without failing. Soundness indicates the presence of defects such as cracks, inclusions, or voids within the weld that could compromise its strength and performance. By performing the guided bend test, welders and inspectors can confirm whether a welded joint meets the necessary standards for both toughness and structural integrity required for its intended application.

Thus, the guided bend test provides valuable insights into the performance characteristics of a welded joint, aligning closely with the concept of ductility and soundness, making this choice the correct one.