B-Scan

B-Scan 

B-Scan – refers to the image produced when the data collected from an ultrasonic inspection is plotted on a cross-sectional view of the component.

The true definition according to BS EN 1330-4:2000 is the 'Image of the results of an ultrasonic examination showing a cross-section of the test object perpendicular to the scanning surface and parallel to a reference direction. The cross-section will normally be the plane through which the individual A-scans have been collected.' This last sentence means that the B-scan will generally be the plane which contains the beam axis.



The B-scan image is often observed for an individual scan line, allowing through wall sizing of indications. Typical applications to be found within ultrasonic phased array inspection.

What the hec?! articles are not intended to be the definitive account on the topic or acronym in question. Readers’ comments and contributions are welcomed. Email: ndtnews@bindt.org