Technical articles

Computed Radiography vs Direct Digital Radiography

Computed Radiography vs Digital Detector Arrays in NDT

DÜRR NDT

18. Mar 2025 /

Learn more about the two main technologies Computed Radiography (CR) and Direct Digital Radiography (DR) in 2D digital X-ray. Discover the strengths of both to select the right technology to get the best results for the specific application.

Metallic screens gamma computed radiography

Investigation of the effect of metallic screens on image quality in gamma computed radiography

Nick D‘Ademo, DÜRR NDT

15. Nov 2018 /

The role of metallic screens in computed radiography for controlling scattered radiation is very well-known. This paper extends this topic further and quantitatively investigates how image quality in terms of signal-to-noise ratio (SNR) and basic spatial resolution (SRb) is influenced by metallic screens when Iridium-192 is used as the radiation source.

Practical guideline for digital radiographic testing of welds according to ISO 17636-2

Uli Pöhler, DÜRR NDT; Steve Jelfs, DÜRR NDT

06. Sep 2017 /

As standards become increasingly important in radiographic testing, knowing how to properly apply these standards in real-world applications is now more crucial than ever. Learn how to apply the ISO 17636-2 standard using a steel weld plate as an example and shorten your time to a high-quality image.

Fully-Automated Weld Inspection of Aerospace turbines enabled by Digital Radiography

Nick D‘Ademo, DÜRR NDT; Wolfgang Schultz, DÜRR NDT

04. Sep 2017 /

As the digitization of X-ray technology continues to expand in the NDT inspection world, many manual inspection tasks can now be fully automated. The main benefits are a significant increase in productivity and efficiency as well as higher end-product quality.

Influence of the laser spot size on the image quality of a CR system

Steve Jelfs, NDT Specialist, DÜRR NDT

12. Jul 2017 /

Computed Radiography (CR) is a digital imaging technology where phosphor imaging plates (IP’s) take the place of conventional radiographic film. Once the IP’s are exposed to radiation, the CR scanner uses a focused laser to read the information from the imaging plate and transfer it to software that renders an image on a computer.

Quick industrial X-ray testing without intermediate data carriers of information

Prof. V.A. TROITSKIY, The E.O.Paton Electric Welding Institute of the National Academy of Science of Ukraine

18. May 2017 /

Flash-radiography (FR) is the radiography without intermediate data carriers (films and storage plates). FR produces a quick image. It provides for low cost of testing, capability of multi-angle real time monitoring of internal defects of the objects.