TY - GEN A1 - Redmer, Bernhard A1 - Ewert, Uwe A1 - Rädel, Christoph A1 - Zscherpel, Uwe A1 - Likhatchov, A.V. A1 - Pickalov, V.V. A1 - Neundorf, B. T1 - Mobile 3D-X-Ray Tomography for Analysis of Planar Defects in Welds by "Tomocar" T2 - 16th World Conference on Nondestructive Testing N2 - Tomographical Computer Aided Radiology (TomoCAR) is based on the mechanical position control of an X-ray tube in front of a welding seam and the application of a planar array detector behind it. Several hundred radiometric projections in small angle steps are acquired. The tomographical reconstruction allows the three-dimensional (3D) representation of the defects. A new radiometric array detector system with a small internal unsharpness and high image contrast is used for the 2- and 3-dimensional visualization and sizing of planar defects with a defect opening of less than 100 µm. This detector is based on a CMOS-flat panel with a direct converting CdTe-single crystal layer. The small design allows the application of the mobile testing equipment for mechanized X-ray inspection in industrial plants. The physical pixel size of the detector amounts to 0,1x0,1 mm². Nevertheless, this system yields a better spatial resolution than indirect converting detectors (e.g. cameras with fluorescence layers of Gd2O2S). It allows the reliable detection of planar defects with openings far below the detector pixel size by subpixel resolution. 'TomoCAR' is qualified at present in the context with a German pilot study following to the ENIQ guidelines for the employment within the nuclear power industry. T2 - 16th World Conference on Nondestructive Testing CY - Montreal, Canada DA - 2004-08-30 KW - Digitale Radiologie KW - Radiometrie KW - Laminografie KW - Mobile Anwendungen PY - 2004 SP - 8 pages PB - International Committee for Non-Destructive Testing CY - Montreal AN - OPUS4-4717 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -