What aspect of ultrasonic testing does the B-scan presentation focus on?

The B-scan presentation in ultrasonic testing focuses on providing a cross-sectional representation of the scanned material. This format allows for visualization of internal features and flaws by displaying the signal information in a two-dimensional format, typically showing depth on one axis and position along the scan on the other. This is particularly useful for identifying and analyzing issues such as inclusions, voids, or cracks within the material.

In ultrasonic testing, the B-scan is created by moving the transducer along a surface while collecting amplitude data as a function of depth. This results in a visual representation that can highlight the presence and location of defects, making it invaluable for quality control and assessment of structural integrity. The ability to interpret these cross-sectional images is crucial for effective NDT applications.