Non-destructive testing in versatile joining processes Lechner, M. Borgert, Thomas Busch, Matthias Harms, A. Holtkamp, Pia Katharina Römisch, D. Wituschek, Simon Kappe, Fabian Abstract. Mechanical joints are traditionally analyzed through destructive micrograph analysis, which may compromise internal geometry and morphology, as evidenced by radial cracks in semi-tubular self-pierce riveting. In contrast, industrial X-ray computed tomography (XCT) offers a non-destructive method for component diagnosis, providing volumetric insights without damaging the sample and enabling dimensional measurement. The DFG-funded Collaborative Research Center TRR 285 is exploring XCT's application in assessing mechanical joinability across various joining processes and materials, particularly in multi-material systems like steel-aluminum joints. XCT faces challenges in accurately capturing multi-material compositions, leading to artifacts that complicate interface detection. This research aims to validate XCT for joint investigations, yielding quantitative characteristics that surpass those from traditional micrograph analysis. Materials Research Forum LLC 2025 info:eu-repo/semantics/conferenceObject doc-type:conferenceObject text http://purl.org/coar/resource_type/c_5794 https://ris.uni-paderborn.de/record/60439 Lechner M, Borgert T, Busch M, et al. Non-destructive testing in versatile joining processes. In: <i>Materials Research Proceedings</i>. Vol 52. Materials Research Forum LLC; 2025. doi:<a href="https://doi.org/10.21741/9781644903551-12">10.21741/9781644903551-12</a> eng info:eu-repo/semantics/altIdentifier/doi/10.21741/9781644903551-12 info:eu-repo/semantics/altIdentifier/issn/2474-395X info:eu-repo/grantAgreement/EC/418701707 info:eu-repo/semantics/closedAccess