| People | Locations | Statistics |
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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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Romanoff, Jani
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2022Experimental Investigations on Stiffened and Web-core Sandwich Panels Made for Steel under Quasi-Static Penetrationcitations
- 2020Emerging Challenges for Numerical Simulations of Quasi-Static Collision Experiments on Laser-Welded Thin-Walled Steel Structurescitations
- 2020Fatigue strength modelling of high-performing welded jointscitations
- 2019Optimisation of passenger ship structures in concept design stagecitations
- 2019Effect of weld modelling on crashworthiness optimizationcitations
- 2018Micropolar modeling approach for periodic sandwich beamscitations
- 2018Fatigue strength of high-strength steel after shipyard production process of plasma cutting, grinding, and sandblastingcitations
- 2017Influence of nonsymmetric steel sandwich panel joints on response and fatigue strength of passenger ship deck structures
- 2017Fatigue strength of laser-welded foam-filled steel sandwich beamscitations
- 2017Synthesis of experimental testing and fatigue behavior of laser stake-welded T-joints on medium-high cycle fatigue rangecitations
- 2016Characterisation of local grain size variation of welded structural steelcitations
- 2014Global buckling and post-buckling of web-core sandwich and stiffened panels: sensitivity to general corrosion
- 2014Influence of grain size distribution on the Hall–Petch relationship of welded structural steelcitations
- 2013Ultimate strength of corroded web-core sandwich beamscitations
- 2012Influence of weld stiffness on buckling strength of laser-welded web-core sandwich platescitations
- 2007Bending response of laser-welded web-core sandwich plates ; Laserhitsattujen kerroslevyjen taivutusvaste
Places of action
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article
Fatigue strength of laser-welded foam-filled steel sandwich beams
Abstract
aser stake-welded steel sandwich panels are widely used in engineering due to their high stiffness-to-weight ratios. The welds are thinner than the plates they join so that there are two crack-like notches on each side of a weld. As a consequence, the welded joints are susceptible to fatigue. In this study, as a remedy to the fatigue problem, low-density H80-grade Divinycell polyvinylchloride foam is bonded adhesively to the voids of stake-welded web-core sandwich beams. The foam reduces shear-induced stresses in the stake-welds. The choice of Divinycell H80 is founded on earlier J-integral-based finite element fatigue assessments of sandwich panels. Empty and the H80-filled sandwich beams are tested in three-point-bending for stiffness, ultimate strength and fatigue (load ratio R = 0.05). The failure modes in the weld joint region are studied using scanning electron microscopy. The experimental results show that the filling increases the stiffness of the sandwich beams by a factor of three while the weight is increased only by 6%. The ultimate strength is increased by 2.7 times. As for the fatigue behavior, the slope increases from m = 4.508 of empty panels to m = 7.321 of filled panels while the load level at 2 million cycles increases by a factor of 8.5.