Basic concepts of fatigue resistance
Fatigue behaviour of welded joints
Article REF: M4185 V1
Basic concepts of fatigue resistance
Fatigue behaviour of welded joints

Authors : Isabel HUTHER, Laurent JUBIN

Publication date: December 10, 2025 | Lire en français

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2. Basic concepts of fatigue resistance

The strength of welded joints subjected to cyclic loading is much lower than the fatigue strength of the base metals involved (Table 5 ). This poor fatigue performance can be explained by the inherent presence of geometric singularities at the weld, which result in stress concentrations and high residual tensile stresses [BM 5 043] .

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