PSI - Issue 57

Mehdi Ghanadi et al. / Procedia Structural Integrity 57 (2024) 386–394

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Mehdi Ghanadi et al./ Structural Integrity Procedia 00 (2023) 000 – 000

8. Conclusions The fatigue strength dependence of plate thickness for non-load-carrying cruciform joint in terms of probabilistic approach has been investigated in the underlying study. The following conclusions can be drawn from the results: - The probabilistic model calculated for the most fitted value of the shape parameter reduces the variation in fatigue test data in comparison with the conventional nominal stress method. - In the case of the thickness effect, thicker specimens show a smaller highly stressed region in contrast to thinner joints which directly influences that fatigue response. - This evaluation of fatigue strength for thinner thicknesses shows better agreement with experimental results for the probabilistic evaluation method for a 1mm radius. - Probabilistic models can be used to understand the size effect in welds subjected to fatigue loading better. References Akihiko, O., Kazuyoshi, M., Naoyuki, S., & Yoshio, M. (1994). 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Structural Hot-Spot Stress Approach to Fatigue Analysis of Welded Components . https://doi.org/10.1007/978-981-10-5568-3 Ohta, A., Maeda, Y., & Suzuki, N. (2002). Residual stress effect on fatigue strength of non-load-carrying cruciform welded joints of SM570Q steel for welded structures. Welding in the World , 46 (11 – 12), 20 – 25. https://doi.org/10.1007/BF03263393/METRICS O.Öjasäter. (1995). Effect of plate thickness on fatigue of welded components. IIW-XIII-1582-95 . Pedersen, M. M. (2019). Thickness Effect in Fatigue of Welded Butt Joints: A Review of Experimental Works. International Acknowledgements This research was financially supported by SSAB. The support is gratefully acknowledged.