In NDT, what does the term "discontinuity" mean?

The term "discontinuity" in Nondestructive Testing (NDT) refers to any interruption or change in the material structure. This can include a variety of features such as cracks, voids, inclusions, or any other imperfections that could affect the integrity or function of the material being inspected. Recognizing these discontinuities is crucial because they may compromise the safety or performance of the component being evaluated.

This definition emphasizes that discontinuities can be natural or induced events within the material. Identifying them is critical in ensuring that the materials meet required standards for performance and safety. Understanding this term helps NDT professionals perform accurate inspections and interpretations of the structural integrity of materials in various applications.