TY - JOUR A1 - Ewert, Uwe A1 - Zscherpel, Uwe T1 - Minimum requirements for digital radiography equipment and measurement procedures by different industries and standard organizations T2 - The e-journal of nondestructive testing & ultrasonics N2 - The digital photography has almost completely substituted the film photography. The film replacement is also fast progressing in medical X-ray radiography. This process is slower in NDT and especially in Europe. Reasons for the hesitating change to digital radiography (RT-D) in NDT are the necessary time for adoption of standards and the conservative request for film RT by auditors and NDT managers for applications in large plants and at construction areas. The fast serial inspection for small castings is already almost completely dominated by RT-D due to the cost effective short exposure and interpretation times. Standards were developed in parallel at CEN, ISO, ASTM and ASME. Unfortunately, the standard practices are different and the requirements on image quality and useable hardware are different too. The first standard series on Computed Radiography were developed and published by CEN and ASTM in 2005. Harmonized classification and qualification standards are available but the published practices are different. ASTM has developed the first standards for application of Digital Detector Arrays (DDA) in 2010. The first digital RT ISO standard practice is ISO 17636-2 (2013), which describes the practice for application of DDAs and Imaging Plates for weld inspection. At the first time this standard provides requirements for the selection of suitable hardware. Minimum image quality requirements are specified in analogy to film radiography and 3 Compensation Principles are defined to enable the application of a wider range of digital detectors. A comparison of the different international digital RT standards is given and first experiences with ISO 17636-2 are discussed. New standards on RT wall thickness and corrosion measurements (EN 16407, film and digital) have been developed recently. PB - NDT.net CY - Kirchwald T2 - ECNDT 2014 - 11th European conference on non-destructive testing CY - Prague, Czech Republic DA - 06.10.2014 KW - NDT KW - X-Ray KW - Digital detectors KW - Standards KW - Radiographic procedures KW - Unsharpness KW - Basic spatial resolution KW - Requirements KW - Digital industrial radiology PY - 2014 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/32308 AN - OPUS4-32308 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-323081 UR - https://www.ndt.net/?id=16708 SN - 1435-4934 VL - 19 IS - 12 SP - 1 EP - 18 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany