PSI - Issue 38

Tobias Jonsson et al. / Procedia Structural Integrity 38 (2022) 411–417 Jonsson, Narström and Barsoum / Structural Integrity Procedia 00 (2021) 000 – 000

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5. Conclusions

• When butt welds in Strenx® 1100Plus are subjected to static normal stress, equal strength properties as the base material is observed in the welded joint. The Eurocode 3 for static joint strength requirements are fulfilled for all static tests. • The fatigue class for HFMI treated and TIG dressed butt welds in Strenx® 1100Plus are 250 MPa and 200 MPa respectively. Both TIG-dressing and HFMI treatment shows one additional FAT class improvement in comparison to the recommendations. Acknowledgements The authors would like to acknowledge SSAB AB ( Swedish Steel Company ) for financial support. References Hobbacher, A., 2009. Recommendations for fatigue design of welded joints and components. New York: Welding Research Council. Haagensen, P.J., and Maddox, S.J., 2013. IIW Recommendations on methods for improving the fatigue strength of welded joints: IIW-2142-110. Woodhead publishing. Yildirim, H. C., 2015, Review of fatigue data for welds improved by tungsten inert gas dressing, International Journal of Fatigue, Vol.79, p.36-45 Volvo STD 181-0004, 2016, https://webstd.volvo.com/webstd/docs/181-0004 Marquis G.B. and Barsoum Z., 2016. IIW Recommendations for the HFMI Treatment - For Improving the Fatigue Strength of Welded Joints, ISBN 978-981-10-2503-7, Springer. Baumgartner J., Yıldırım H. C., Barsoum Z., 2019, Fatigue strength assessment of TIG-dressed welded steel joints by local Approaches, International Journal of Fatigue 126, 72 – 78. R. Aldén, R., Barsoum, Z., Vouristo, T., Al-Emrani, M., 2020, Robustness of the HFMI techniques and the effect of weld quality on the fatigue life improvement of welded joints, Welding in the World, Vol.64 (11), p.1947-1956. Leitner M., Barsoum Z., 2020, Effect of increased yield strength, R-ratio, and plate thickness on the fatigue resistance of high-frequency mechanical impact (HFMI) – treated steel joints, Welding in the World 64:1245 – 1259 Leitner M., Stoschka M., Barsoum Z., Farajian M., 2020, Validation of the fatigue strength assessment of HFMI-treated steel joints under variable amplitude loading, Welding in the world, Vol.64 (10), p.1681-1689.