Gradient approach for the evaluation of the fatigue limit of welded structures under complex loading

Welded ‘T-junctions’ are tested at different load ratio for constant and variable amplitude loading. Fatigue results are analyzed through the type of fatigue mechanisms depending on the loading type. A gradient approach (WSG: Welded Stress Gradient) is used to evaluate the fatigue limit and the comp...

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Bibliographic Details
Published in:Frattura ed integritá strutturale 2017-07, Vol.11 (41), p.220-226
Main Authors: Nadot, Y., Halm, D., Dal Cero Coelho, F.
Format: Article
Language:English
Subjects:
Alloys
Cumulative damage
Damage
Fatigue
Fatigue limit
Fatigue tests
Gradient
Load
Materials fatigue
Metal fatigue
Variable amplitude loading
Weld
Welded joints
Welded structures
Welding
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Summary:Welded ‘T-junctions’ are tested at different load ratio for constant and variable amplitude loading. Fatigue results are analyzed through the type of fatigue mechanisms depending on the loading type. A gradient approach (WSG: Welded Stress Gradient) is used to evaluate the fatigue limit and the comparison with experimental results shows a relative good agreement. Nonlinear cumulative damage theory is used to take into account the variable amplitude loading.
ISSN:1971-8993
1971-8993
DOI:10.3221/IGF-ESIS.41.30