In NDT, what does the term "discontinuity" refer to?

The term "discontinuity" in Non-Destructive Testing (NDT) specifically refers to an interruption in the normal structure of a material. These interruptions can manifest in various forms, such as cracks, voids, inclusions, or any other anomalies that may affect the integrity and performance of the material. Understanding discontinuities is critical in NDT as they can indicate potential weaknesses or failures in components, making their identification and evaluation essential for ensuring safety and reliability in engineering and manufacturing processes.

While inconsistencies in testing procedures, specific types of defects, and procedural errors during testing are all relevant to the overall NDT process, they do not define what a discontinuity is. The focus on the structural integrity of materials within the context of NDT underscores the importance of recognizing discontinuities as crucial indicators of material performance.