PSI - Issue 75

Hannes Schwarz et al. / Procedia Structural Integrity 75 (2025) 625–632 Schwarz, Fliegener, Rennert / Structural Integrity Procedia (2025)

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specimen level, shows a conservative prediction for the demonstrator components in our cases. • Future efforts are needed in order to account for further influencing factors in the fatigue strength assessment which were neglected so far in our approach, which consider the interaction between hydrogen diffusion and mechanical stress state (stress triaxiality, Gorsky effect), surface properties, additional dependencies on loading frequency, hydrogen pressure and temperature. • The results of our exemplary use case can be considered as a basis for a future, general implementation of hydrogen conditions in the FKM guidelines. Acknowledgements The financial support of the IGF project 22733 BG, supported by governmental funding by the German Federal Ministry for Economic Affairs and Climate Action (BMWK) based on an enactment of the German Bundestag is greatly acknowledged. The authors wish to thank the research association FVV e.V. ( fvv-net.de ) and the industrial companies Poppe + Potthoff GmbH and Siemens Energy AG for providing the sample components and specimen material as well as LaVision GmbH for providing optical strain measurement. References AD2000 Merkblatt S2: Berechnung auf Wechselbeanspruchung, 2012. ASME B31.12-2019: Hydrogen Piping and Pipelines, 2019. Bauer-Troßmann, K. et al.: MatHyP - Werkstofftechnik für Wasserstoff-Hochdruckkomponenten, Robert Bosch GmbH, 2021. Berger C, Blauel J, Hodulak L, Pyttel B, Varfolomeev I. Fracture mechanics based strength assessment for engineering components, 4th eds. Frankfurt am Main, Germany: VDMA-Verlag; 2018. DIN 50100:2016-12, Load controlled fatigue testing - Execution and evaluation of cyclic tests at constant load amplitudes on metallic specimens and components, 2016. Duportal, M. et al.: On the estimation of the diffusion coefficient and distribution of hydrogen in stainless steel, 2020. Fiedler M, Wächter M, Varfolomeev I, Vormwald M, Esderts A. Analytical strength justification with explicit consideration of nonlinear material deformation behavior, 1st eds. Frankfurt am Main, Germany: VDMA-Verlag; 2019. Fischer, C. et al.: Codes and standards for the fatigue-based design of hydrogen infrastructure components, 2023. Lee et al., NASA TM-2015-218602, Hydrogen Embrittlement, April 2016. Paul J. Gibbs et al., Comparison of internal and external hydrogen on fatigue-life of austenitic stainless steels, ASME Pressure Vessel & Piping Conference PVP2016-63563, 2016. Takashi Iijima et al, Effect of high pressure gaseous hydrogen on fatigue properties of SUS304 and SUS316 austenitic stainless steel, ASME Pressure Vessel & Piping Conference PVP2018-84267, 2018. Seiji Fukuyama et al., Fatigue Properties of Type 304 Stainless Steel in High Pressure Hydrogen at Room Temperature, Transactions of the Japan Institute of Metals, Vol 26, No 5 (1985), pp. 325-331. Jürgensen, J. et al.: Effect of Hydrogen Charging on the Mechanical Properties of High-Strength Copper-Base Alloys, Austenitic Stainless Steel AISI 321, Inconel 625 and Ferritic Steel 1.4511, 2024. Michler, T. et al.: Review and Assessment of the Effect of Hydrogen Gas Pressure on the Embrittlement of Steels in Gaseous Hydrogen Environment; 2021. Michler et al.: Tensile testing in high pressure gaseous hydrogen using conventional and tubular specimens: Austenitic stainless steels, Int J of Hydrogen Energy 48 (2023), 25609-25618. T. Ogata, Influence of high pressure hydrogen environment on tensile and fatigue properties of stainless steels at low temperatures, AIP Conference Proceedings 1435, 39 (2012), https://doi.org/10.1063/1.47120. Ratoi, M. et al.: Hydrocarbon Lubricants Can Control Hydrogen Embrittlement, 2020. Rennert, R; Kullig, E; Vormwald, M; Esderts, A; Luke, M. Analytical strength justification for engineering components, 7th eds. Frankfurt am Main, Germany: VDMA-Verlag; 2020. San Marchi et al.: On the physical differences between tensile testing of type 304 and 316 austenitic stainless steels with internal hydrogen and in external hydrogen, Int J of Hydrogen Energy 35 (2010), 9736-9745. Schauer, G.: Auslegungsansatz für Stahlbauteile bei Ermüdungsbeanspruchung in Druckwasserstoffatmosphäre, Materialprüfungsanstalt (MPA) Universität Stuttgart, 2018. Akira Uenoa and Guenec Benjamin, Effect of high-pressure H2 gas on tensile and fatigue properties of stainless steel SUS316L by means of the internal high-pressure H2 gas meth-od, Procedia Structural Integrity 19 (2019) 494-503