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The aim is to evaluate the effectiveness of different stress-based approaches for estimating fatigue life in thin-walled fillet-welded joints.

Fatigue Life Estimation of Thin-Walled Fillet-Welded Joints Under Constant Amplitude Loading

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The aim is to evaluate the effectiveness of different stress-based approaches for estimating fatigue life in thin-walled fillet-welded joints.
Assessed three stress-based approaches: nominal, hot-spot, and notch stress.
Utilized a dataset of ten configurations with similar thicknesses and varying geometries.
Analyzed performance under constant-amplitude loading conditions.
All approaches showed a comparable average level of conservatism in fatigue life predictions.
Notch and nominal stress methods displayed significant variability across different configurations.
The hot-spot stress-based approach provided the most consistent predictions with the least scatter.

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Evaluation of fatigue life estimation methods for fillet-welded joints, indicating variations in predictions.

Sladký et al. (2026) studied this question.

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