This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Welded Seam Inspection with High Energy X-Rays
Technical Paper
2011-01-0472
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The inspection of steel welds is a requirement in many safety critical applications, with X-rays offering an excellent visual aid in quality monitoring of such parts. In order to penetrate the steel and the weld, high energy X-rays are usually required though, depending on the material's thickness and the length of material the X-ray beams must traverse. The high beam energies can seriously degrade the X-ray detectors' life expectancy and image quality, so in order to ensure consistent image quality traditional X-ray film has been used, in spite of its drawbacks regarding the ecological impact of the chemical process and the significant efforts involved if archives of the welds must be maintained.
This paper presents an alternative solution to the traditional photochemical archival approach using a custom X-ray detector developed specifically for the inspection of welded seams. The detector is protected from the damaging effects of high energy X-rays used in steel weld inspection, thus maintaining constant image quality over time. Electronic images offer the possibility of automatic image processing of the welded seams, and the detector's constant image quality has also allowed it to eliminate the photochemical process entirely and progress to an electronic archival system.
The paper will present the operating principle and background of the application as well as the experiences gained from its use over the past years at an automatic welding station. This paper also presents data and images generated with the system in conjunction with automatic weld inspection software developed for steel welded seams.
Recommended Content
Authors
Topic
Citation
Scholz, O., Behrendt, R., Wenzel, T., Stocker, T. et al., "Welded Seam Inspection with High Energy X-Rays," SAE Technical Paper 2011-01-0472, 2011, https://doi.org/10.4271/2011-01-0472.Also In
References
- Wenzel, T. Behrendt, R. et.al. Fully Automated Inspection of Welded Seams with a New High Resolution Durable X-ray Camera System ECNDT 2006
- Scholz, O. Schmitt, P. Kube, M. Behrendt, R. et al. “Improvements in Detector Design for X-ray Inspection of Cast Parts,” SAE Int. J. Mater. Manuf. 2 1 134 139 2009 10.4271/2009-01-0212
- Mery, D. Berti, M.A. Automatic detection of welding defects using texture features Insight - Non-Destructive Testing and Condition Monitoring 45 2003
- Schwinn, V. Fluess, P. Bauer, J. Production and progress work of plates for pipes with strength level of X80 and above Proceedings of IPC.02 Calgary 2002
- DIN EN 13068-3, Radioskopische Prüfung - Teil 3: Allgemeine Grundlagen für die radioskopische Prüfung von metallischen Werkstoffen mit Röntgen- und Gammastrahlung Beuth Verlag Berlin 2001
- DIN EN 1435, Zerstörungsfreie Prüfung von Schweißverbindungen. Durchstrahlungsprüfung von Schmelzschweißverbindungen Beuth Verlag Berlin 1997
- DIN EN 584-1, Industrielle Filme für die Durchstrahlungsprüfung Beuth Verlag Berlin 1994
- DIN EN 462-5, Bildgüte von Durchstrahlungsaufnahmen - Teil 5: Bildgüteprüfkörper (Doppel-Drahtsteg), Ermittlung der Bildunschärfe Beuth Verlag Berlin 1996