Digital Radiology (DR)

With our partner we provide single and serial testing of your components with digital radiology.

Non destructive testing with Digital Radiology (DR)

What is digital radiology?

Digital radiology is an imaging method of non destructive materials testing and is suitable for almost all materials. It combines conventional X-ray testing (RT testing) with digital technology. A major advantage is the digital supply of the film material (imaging plates) or the use of a digital X-ray detector.

How does digital radiology work?

This method of non destructive materials testing makes use of the absorption of radiation in materials. In digital radiology, components are radiated with a suitable radiator, e.g. an X-ray tube.

This radiography produces a black-and-white image of the density and thickness of the component on a digital X-ray film or a digital X-ray detector. The thicker or denser a component is, the less radiation can pass through it. This means that the brighter its image on the X-ray image, the thicker or denser it is. Deviations in the thickness and density of the material can therefore be detected by different levels of blackening of the X-ray image. This makes flaws in the component visible.

Digital radiology allows the view from different angles and thus a “look inside”. Advanced image processing, including digital filters, optimizes the analysis and visibility of possible defects. Electronic archiving of the examination results ensures global availability.
Digital radiology is also ideally suited for fast, series-accompanying inspection of your components thanks to automated inspection sequence control.

Wann wird die digitale Radiologie genutzt?

This inspection methode is used to detect defects in the material.*.

Detectable defects are:

  • Cracks
  • Pores
  • Shrinkage cavities
  • Segregations
  • Inclusions
  • Doublings
  • Slag lines
  • Inhomogeneities
  • Bonding defects
  • Wall thickness variations (geometry deviations)

Special requirements:

Digital radiology is NOT suitable for thick-walled components.

Smallest detectable defect:

More than 2% to 5% radiographic depth (e.g., 100 mm radiographic depth results in 2-5 mm detectable defect size).

Detectable defect location:

No limitation, flaw depth can only be detected by computed tomography (CT) method.


* The specifications depend on the geometry and physical properties of the material to be tested and are therefore only intended as a guideline.

Digital Radiology with VOGT Ultrasonics

We test your components either single or in series with our partner. We provide support, feasibility studies, validation and monitoring of the tests.

Digital Radiology – Application examples

Workstation of a digital radiology inspection system with movable detector and X-ray tube

Digital X-ray inspection system (photo: Viscom)

View into the interior of a component using X-ray computed tomography

Digital image of a welded pipe, flaws in the form of pores