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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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Van Innis, Charline Van Innis
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2024Ultra tough architected joints through single manufacturing step
- 2024Ultra-tough architected adhesive joints for integrated composite processing and bondingcitations
- 2023Mechanics of PEI-expoxy interfaces
- 2023Fracture toughness of architected joints involving crack instabilities
- 2023Ultra tough architected joints through single step bonding process with tunable properties
- 2022Integrated manufacturing and toughening of composite joints using a PEI film
- 2022Composite joint toughening by multiscale architecturing through integrated manufacturing
- 2021Bonding polymer Composites with PEI film: crack trapping and enhanced fracture resitstance
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document
Ultra tough architected joints through single manufacturing step
Abstract
Owing to their high strength to weight ratio, Carbon Fibre Reinforced Polymer (CFRP) Composites are widely used in aerospace. Manufacturing complex structures combining metallic and composite parts requires an efficient bonding process, but also high crack propagation resistance. However, adhesive joints suffer from time and labour-intensive processes and low to moderate fracture toughness. Several toughening strategies through joints architecturing have already been investigated such as stop holes or meshes. To improve the process efficiency, one attractive option is to perform bonding and composite curing simultaneously. As a first on the road to the integrated bonding of hybrid metallic composite structures, potential toughening strategies relying on joint architecturing are investigated in this work while co-curing two composites parts. The co-curing is performed through resin transfer moulding. A tough patterned thermoplastic film is inserted between the composite parts. This results in a bondline made of the composite resin and the thermoplastic film that replaces conventional adhesives. The mode I fracture toughness of these joints is investigated through Double cantilever beam tests. The internal architecture produces a stick-slip behaviour which involves three fracture toughness regimes. The first regime corresponds to a moderate fracture toughness at the order of aeronautic adhesives. The second regime is characterized by an intermediate fracture toughness while the crack arrest mechanism of the third regime results in unexpected high values. The micromechanical origin of the high toughening potential is unravelled through fracture surface analysis and finite element models including the details of the joint architecture. Finite elements analyses also allow to investigate the influence of the architecture on the shear strength of the joint, revealing the main advantage of the joint: fine tuning of the joint properties by easily controlling the film architecture.