Imaging Modes - 3D TOF

Pictured

Time Domain Imaging (TDI)™
Utilizes an echo (amplitude & polarity) arrival ‘time’ as a reference, such as standard A-Scan, B-Scan and C-Mode type images.

Imaging Modes - 3D TOF

The Profile, or Time-of-Flight (TOF), imaging mode utilizes the time information within the A-scan. By tracking the transit time from a reference, say the top surface of a part, to an internal feature or defect, a topographic image is created of the internal structure. This image shows a popcorn crack in a PEM where the brightness of the feature relates to depth. The brighter the feature the closer it is positioned to the package surface (reference).