Seidelmann, MarenMarenSeidelmannSpalek, NiclasNiclasSpalekLalkovski, NikolayNikolayLalkovskiFalah, MohsenMohsenFalahRutner, MarcusMarcusRutner2025-12-172025-12-172025-12-1011th International Conference on Fatigue Design, FatDes 2025https://hdl.handle.net/11420/60227Given the substantial environmental and economic consequences associated with deteriorating infrastructure, prolonging the service life of steel bridges is essential for advancing sustainability and economic viability. A critical factor in achieving this goal is enhancing the integrity of welded joints, which play a pivotal role in the bridge’s performance under dynamic loading conditions. Research indicates that the fatigue strength of welds can be increased by up to sixfold through the application of a nanometallic multilayer (NMM) composed of nickel and copper. To date, investigations into the fatigue enhancement of welded joints using NMM have predominantly been conducted on a laboratory scale. To enable practical application on existing infrastructure, a coating device is being developed to apply the NMM treatment directly onto surfaces without the need for full immersion in an electrolyte bath, thus supporting its implementation as a post-treatment process for steel bridges.en2452-32162025426434Elsevier BVhttps://creativecommons.org/licenses/by-nc-nd/4.0/Nanometallic MultilayerPost-weld Treatment3D-PrintingIn-Situ CoatingFatigue ResistanceSteel BridgesTechnology::624: Civil Engineering, Environmental EngineeringTechnology::620: Engineering::620.1: Engineering Mechanics and Materials Science::620.11: Engineering MaterialsJournal Articlehttps://doi.org/10.15480/882.1631910.1016/j.prostr.2025.11.04210.15480/882.16319Journal Article