Which UT display provides a plan view of reflectivity over an area?

Which UT display provides a plan view of reflectivity over an area?

• A. A-scan
• B. B-scan
• C. C-scan
• D. D-scan

Answer: (C)

C-scan is the display that provides a plan view of reflectivity over an area. It builds a two-dimensional map by collecting data from many probe positions across the surface, plotting reflectivity as a function of x and y coordinates, so you can see where features or defects are located over the entire area. In contrast, an A-scan shows echoes along a single line over time (depth information for that line), a B-scan creates a cross-sectional slice showing depth versus position along a line, and a D-scan presents depth versus angle in a sector pattern.

C-scan is the display that provides a plan view of reflectivity over an area. It builds a two-dimensional map by collecting data from many probe positions across the surface, plotting reflectivity as a function of x and y coordinates, so you can see where features or defects are located over the entire area. In contrast, an A-scan shows echoes along a single line over time (depth information for that line), a B-scan creates a cross-sectional slice showing depth versus position along a line, and a D-scan presents depth versus angle in a sector pattern.