Print Email Facebook Twitter A model for modifying the S-N curve considering the effect of boundary conditions on the fatigue crack growth of welded components Title A model for modifying the S-N curve considering the effect of boundary conditions on the fatigue crack growth of welded components Author Shakeri, I. (TU Delft Structural Integrity & Composites; Technical University of Denmark) Wu, W. (Technical University of Denmark) Michel, Alexander (Technical University of Denmark) Eder, Martin A. (Technical University of Denmark) Date 2024 Abstract The present study proposes a novel model to modify master S-N curves of components according to their load redistribution capability reflected in different boundary conditions (BCs) based on the fracture mechanics analysis. To that end, a comprehensive numerical study was conducted on a Single Edge Notch Bend (SENB) specimen constrained with different kinematic BCs using discrete fatigue crack growth (FCG) simulation. It was observed that BCs indeed can have a significant effect on the crack growth behavior and consequently on the resulting fatigue life under the same nominal loading conditions. The proposed model was applied to the S-N curve of a T-welded joint, and the predicted fatigue life was validated against 3D FCG simulations. Finally, FCG tests were conducted on SENB specimens to experimentally corroborate the effect of BCs on the FCG rate. Subject boundary conditionsfatigue crack growthfatigue designfatigue lifeS-N curvewelded joints To reference this document use: http://resolver.tudelft.nl/uuid:721b77b9-cf76-4710-8b8a-2ac832fcbef8 DOI https://doi.org/10.1111/ffe.14270 ISSN 8756-758X Source Fatigue & Fracture of Engineering Materials and Structures, 47 (6), 2010-2028 Part of collection Institutional Repository Document type journal article Rights © 2024 I. Shakeri, W. Wu, Alexander Michel, Martin A. Eder Files PDF Fatigue_Fract_Eng_Mat_Str ... undary.pdf 4.5 MB Close viewer /islandora/object/uuid:721b77b9-cf76-4710-8b8a-2ac832fcbef8/datastream/OBJ/view