What is the term for a one-axis scanning sequence using only one position encoder?

The term describing a one-axis scanning sequence utilizing only one position encoder is known as a line scan, also referred to as a linear scan. This method involves moving the probe along a single axis, capturing data at various positions, which helps in constructing a detailed image or representation of the internal structure being examined. The simplicity of this technique, relying solely on one encoder, allows for efficient data acquisition and easy interpretation of results.

In a line scan, the data collected is often processed in a way that reflects the linear path traveled by the probe, providing insights into features like crack lengths or material thickness along that specific axis. This makes it particularly valuable for applications where monitoring along a straight line is sufficient for detecting discontinuities or measuring variations in material properties.

Other scanning techniques, such as raster scans or B-scans, involve more complex movements or multiple axes, which may not apply when focusing on a one-dimensional approach. This highlights the specificity and effectiveness of line scans in applications requiring a straightforward linear analysis.