Phased Array Tutorial - Table of Contents
C-Scan Mapping

Another presentation option is a C-scan, a two dimensional presentation of data displayed as a top or planar view of a test piece, similar in its graphic perspective to an x-ray image, where color represents the gated signal amplitude or depth at each point in the test piece mapped to its position. Planar images can be generated on flat parts by tracking data to X-Y position, or on cylindrical parts by tracking axial and angular position. For conventional ultrasound, a mechanical scanner with encoders is used to track the transducer's coordinates to the desired index resolution. The images that follow conceptually show C-scans of a reference block made with a conventional immersion scanning system using a focused immersion transducer.

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