TY - CONF A1 - Xu, W. A1 - Zscherpel, Uwe A1 - Peng, J. A1 - Luo, L. A1 - Gao, X. A1 - Li, J. T1 - Investigation on Wall Thickness Ranges Using Digital Radiography for Tangential Projection Technique N2 - X-ray testing is based on the attenuation of X-rays when passing through matter. Image detectors acquire the X-ray information which is defined by the local penetrated wall thickness of the tested sample. By X-ray absorption in the detector and following read-out and digitization steps a digital image is generated. As detectors a radiographic film and film digitization, a storage phosphor imaging plate and a special Laser scanner (Computer Radiography - CR) or a digital detector array (DDA) can be used. The digital image in the computer can then be further analyzed using many types of image processing. In the presented work the automated evaluation of wall thickness profiles are investigated using a test steel pipe with 9 different wall thicknesses and various X-ray voltages and different filter materials at the tube port and intermediate between object and detector. In this way the influence of different radiation qualities on the accuracy of the automated wall thickness evaluation depending on the penetrated wall thickness of the steel pipe was investigated. T2 - 10th International Conference on Information Optics and Photonics CY - Beijing, China DA - 08.07.2018 KW - Image evaluation KW - Computed radiography (CR) KW - Digital Detector Array (DDA) KW - Tangential radiography KW - Wall thickness measurement PY - 2018 SN - 978-1-51062580-8 U6 - https://doi.org/10.1117/12.2506324 SN - 0277-786X VL - 10964 SP - Article Number: UNSP 109645B PB - SPIE CY - Bellingham, WA AN - OPUS4-47346 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -