Conventional radiography, using industrial radiographic films, has its days numbered. Digital radiography, recently, has taken its place in various segments of products and services, such as medicine, aerospace, security, automotive, etc. As well as the technological trend, the digital technique has brought proven benefits in terms of productivity, sensitivity, the environment, tools for image treatment, cost reductions, etc. If the weld to be inspected is on a serried product, such as, for example, a pipe, the best option for the use of digital radiography is the plane detector, since its use can reduce the length of the inspection cycle due to its high degree of automation. This work tested welded joints produced with the submerged arc process, which were specially prepared in such a way that it shows small artificial cracks, which served as the basis for comparing the sensitivity levels of the techniques involved. After carrying out the various experiments, the digital method showed the highest sensitivity for the image quality indicator (IQI) of the wire and also in terms of detecting small discontinuities, indicating that the use of digital radiography using the plane detector had advantages over the conventional technique. The works were carried out on the basis of the specifications for oil and gas pipelines, API 5L 2004 and ISO 3183 2007.
Digital radiography for the inspection of weld seams of pipelines - better sensitivity
Welding International ; 24 , 4 ; 249-257
2010
9 Seiten, 18 Bilder, 6 Tabellen, 14 Quellen
Aufsatz (Zeitschrift)
Englisch
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