How is a "C-scan" defined in phased array ultrasonic testing?

A "C-scan" in phased array ultrasonic testing is defined as a method that maps the intensity of echoes across a plane. This type of scan creates a two-dimensional representation that indicates the distribution of generated ultrasonic signals within the material being tested. By representing the intensity of echoes in graphical form, C-scans allow technicians to visualize and identify areas of interest such as defects or variations in material properties in a straightforward manner.

This method is particularly valuable in non-destructive testing as it provides detailed spatial information about the integrity of a structure. The graphical representation helps to interpret the inspection results quickly, making it easier to focus on specific areas that may require further investigation.

In contrast, other types of scans serve different functions: some may present amplitude versus time, while others summarize inspection results or provide standard one-dimensional views. Each type of scan contributes uniquely to the evaluation process, but the defining characteristic of a C-scan is its ability to illustrate echo intensity across a defined area.