GB/T 29067-2012Non-destructive testing - Test method for measuring industrial computed tomography (CT) image (English PDF)

4.1 Testing Equipment Requirements

It requires the relevant testing equipment (including industrial CT image processing equipment and related software), and requires customers and suppliers in the relevant

We agreed terms.

4.2 avoid the influence of image artifacts on the density measurement

Density measurement method requires. CT density changes reflect real changes in the density of the object instead of image artifacts. Since the detector

Response inconsistent ray scattering beam hardening and other reasons, CT images may exhibit some degree of artifacts and artifacts are often mistaken

Density variations. To ensure the effectiveness of this method of density measurement, industrial equipment manufacturers to respond ray CT projection data is corrected to minimize

Reducing CT image artifacts. In actual testing, you should try to avoid the area affected by artifacts Density measurements.

4.3 avoid the influence of image artifacts on the size measurement

Size measurement method requires. the measured area of the object corresponding to the CT image should have a relatively steep edges. Since the detector ring

Should not, ray scattering beam hardening and other reasons, CT images may exhibit some degree of artifacts, in addition to the straight edge of the object

Edge strip may cause artifacts. To ensure the effectiveness of the method of measuring the size of industrial CT equipment manufacturers respond ray projection data into

Line correction to minimize the CT image artifacts. In actual testing, you should try to avoid the area affected by the dimensional artifacts measuring.