Computed Tomography

Computed Tomography (CT) is a technology that allows 3D reconstruction of test parts. This allows advanced analyses of the error shape, position and distribution. Depending on the application slower high-accuracy scans or fast scans are available.

Classic digital radiography (DR) cannot deliver any depth information of defects in X-ray images. As it is a purely two dimensional technology the viewer can just tell that there is an error, but never how deep it is inside the material. Nevertheless, in some applications it is a big difference if the error is close to the surface or deep inside the part. Another interesting metric is the exact defect-volume, which is impossible to determine in 2D images.

To retrieve the reconstruction data, the X-ray system needs to be capable to perform the synchronized mechanical movement. Our XRH222 for example has precise and programmable drives to acquire all needed images. Physical X-ray hardening through hardware filters is applied through a filter unit. In parallel the image quality needs to be enhanced in the background to further increase the quality and reduce artifacts. The intermediate result are thousands of X-ray images that will be passed on to the reconstruction suite. To allow a smooth workflow all processes are automated through the Xplus Handle, which leads to a one button operation principle.

  • Information about error volume, distance, wall thickness etc.
  • Optional in-line CT for automated 3D ADR evaluation
  • Independent of material type and density
  • Flexible scanning area depending on the detector size
  • Fast reconstruction (< 3 min) using the VisiConsult QUICKscan
  • 3D reconstruction and comparison to CAD data
  • Sophisticated defect and porosity inspection

In the past CT systems have been extremely costly and slow. This made them impractical for industrial use and only feasible for high-end R&D labs. Nowadays it is feasible to have in-line CT-inspection systems and compact cabinets that can be used in many different ways. This results in highly reduced investment costs, as one system can be used for CT reconstruction, manual inspection and even Automated Defect Recognition (ADR) of high volume parts. The versatile XRH111 is the perfect example for such a cabinet.

The in-house developed QUICKscan algorithm delivers interpretable results withing a few minutes. For more accurate inspections the scan time can be increased, which results in highest precision.

Putting it in a nutshell CT is a very mighty feature for your inspection. Nevertheless, not every inspection process really needs to use CT. For a detailed consultation feel free to contact us at any time. Our trained experts will suggest you the perfect solution for your inspection problem.