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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Thévenet, David
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2022Measurement of the interfacial strain energy release rate of adhesively bonded structures with metallic substrates before and after water ageingcitations
- 2020Cluster analysis of acoustic emission data to investigate the damage evolution in modified scarf joint under bi-axial loadingcitations
- 2020On the effect of the curing cycle on the creation of pores in structural adhesive joints by means of X-ray microtomographycitations
- 2020On the influence of mechanical loadings on the porosities of structural epoxy adhesives joints by means of in-situ X-ray microtomographycitations
- 2019Prediction of Mechanical Behaviour of a Bulk Epoxy Adhesive in a Marine Environmentcitations
- 2019Prediction of Mechanical Behaviour of a Bulk Epoxy Adhesive in a Marine Environmentcitations
- 2016A fatigue life prediction method of adhesively bonded joints based on visco-elastic and visco-plastic behavior: application under cyclic shear loadingcitations
- 2012Fatigue life prediction of welded ship detailscitations
- 2010Fatigue assessment of naval welded assemblies
- 2009Fatigue crack initiation life estimation in a steel welded joint by the use of a two-scale damage modelcitations
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article
Fatigue crack initiation life estimation in a steel welded joint by the use of a two-scale damage model
Abstract
WOS ; International audience ; This work deals with the fatigue behaviour of S355NL steel welded joints classically used in naval structures. The approach suggested here, in order to estimate the fatigue crack initiation life, can be split into two stages. First, stabilized stress-strain cycles are obtained in all points of the welded joint by a finite element analysis, taking constant or variable amplitude loadings into account. This calculation takes account of: base metal elastic-plastic behaviour, variable yield stress based on hardness measurements in various zones of the weld, local geometry at the weld toe and residual stresses if any. Second, if a fast elastic shakedown occurs, a two-scale damage model based on Lemaitre et al.'s work is used as a post-processor in order to estimate the fatigue crack initiation life. Material parameters for this model were identified from two Wöhler curves established for base metal. As a validation, four-point bending fatigue tests were carried out on welded specimens supplied by `DCNS company'. Two load ratios were considered: 0.1 and 0.3. Residual stress measurements by X-ray diffraction completed this analysis. Comparisons between experimental and calculated fatigue lives are promising for the considered loadings. An exploitation of this method is planned for another welding process.