Publication detail

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

Martin Sladký, Jan Papuga, Martin Machač, Ivo Jebáček

English title

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

Type

Paper in proceedings (conference paper)

Language

en

Original abstract

This study evaluates the fatigue life estimation performance of nominal, hot-spot, and notch stress-based approaches for thin-walled fillet-welded joints made of steel subjected to constant-amplitude loading. The employed dataset comprised ten configurations with nearly identical wall thicknesses and load asymmetry ratios, which differed mainly in their geometry and loading conditions. Assessing this dataset as a whole revealed that all three approaches exhibited a comparable average level of conservatism. However, the nominal and notch stress-based approaches exhibited pronounced scatter, leading to substantial configuration-to-configuration variations in the level of conservatism. The most consistent predictions, reflected by the lowest scatter, were observed for the hot-spot stress-based approach. Its performance could be further enhanced by extending the wall-thickness ranges over which the thickness corrections are derived from the actual wall thickness. The notch stress-based S-N data exhibited a clear tendency to separate into two approximately parallel curves corresponding to hollow section-based and plate-based configurations.

Keywords in English

high cycle fatigue life prediction; hot-spot stress; nominal stress; notch stress; thin-walled welded joints

Released

2026-01-01

Publisher

Elsevier B.V.

Book

Procedia Structural Integrity

Journal

Procedia Structural Integrity

Pages from–to

421–432

Pages count

12

BIBTEX


@inproceedings{BUT201953,
  author="Martin {Sladký} and  {} and  {} and Ivo {Jebáček}",
  title="Fatigue Life Estimation of Thin-Walled Fillet-Welded Joints Under Constant Amplitude Loading",
  booktitle="Procedia Structural Integrity",
  year="2026",
  journal="Procedia Structural Integrity",
  pages="421--432",
  publisher="Elsevier B.V.",
  doi="10.1016/j.prostr.2025.12.353"
}