TY - JOUR A1 - Jung, Christian A1 - Nowacka, Anna A1 - Barisin, Tin A1 - Meinel, Dietmar A1 - Paetsch, Olaf A1 - Grzesiak, Szymon A1 - Salamon, Michael A1 - Schladitz, Katja A1 - Redenbach, Claudia A1 - Pahn, Matthias T1 - 3d imaging and analysis of cracks in loaded concrete samples. 12th Conference on Industrial Computed Tomography (iCT) 2023, 27 February - 2 March 2023 in Fürth, Germany JF - e-Journal of Nondestructive Testing N2 - Concrete plays a central role as the standard building material in civil engineering. Experimental characterization of the concrete microstructure and a description of failure mechanisms are important to understand the concrete’s mechanical properties. Computed tomography is a powerful source of information as it yields 3d images of concrete specimens. However, complete visual inspection is often infeasible due to very large image sizes. Hence, automatic methods for crack detection and segmentation are needed. A region-growing algorithm and a 3d U-Net showed promising results in a previous study. Cracks in normal concrete and high-performance concrete that were initiated via tensile tests were investigated. Here, the methods are validated on a more diverse set of concrete types and crack characteristics. Adequate adaptions of the methods are necessary to deal with the complex crack structures. The segmentation results are assessed qualitatively and compared to those of a template matching algorithm which is well-established in industry. Y1 - 2023 U6 - https://doi.org/10.58286/27721 VL - 28 IS - 3 ER -