Which display provides information on the distance of a discontinuity from the transducer?

The B-scan display is recognized for providing a visual representation of the depth of discontinuities from the transducer. In this display mode, a two-dimensional image is produced, showcasing the relationship between the intensity of the returned ultrasonic signals and the corresponding depth of the material. This allows operators to see not just the presence of a discontinuity but also its specific location within the material being inspected.

The B-scan is particularly useful because it effectively combines information about the depth with the lateral position of the discontinuities, enabling a more comprehensive understanding of the internal structure of the test material. Such information is crucial in assessing the integrity of structures, as knowing the exact location of flaws can influence decisions on repairs or further evaluations.

In contrast, other display types have different focuses: the A-scan display provides a single-dimensional view of the signal amplitude as a function of time, primarily indicating the presence of discontinuities but not their exact depths visually. The C-scan display presents a plan view or top-down image of a scanned area, often showing the data in a color-mapped format to indicate amplitude but lacking depth information. The RF display shows the raw ultrasonic signal but does not provide a clear visualization of depth-related discontinuities in the same manner as the B