| 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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Javanshour, Farzin
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Stiffness of In-Situ Formed Interleaving Polymeric Nanofiber-Epoxy Nanocompositescitations
- 2023Effect of graphene oxide fibre surface modification on low-velocity impact and fatigue performance of flax fibre reinforced compositescitations
- 2023Effect of graphene oxide fibre surface modification on low-velocity impact and fatigue performance of flax fibre reinforced compositescitations
- 2023Interfacial Toughening Strategies for Impact and Fatigue Tolerant Structural Biocomposites
- 2022High-speed thermal mapping and impact damage onset in CFRP and FFRP
- 2022Flax fibre sizings for fibre-reinforced thermosets - investigating the influences of different sizing agents on fibre moisture content and composite properties
- 2022Bearing strength prediction by cfrp and ffrp damage onset criteria for riveted joints
- 2022High-Speed Thermal Mapping and Impact Damage Onset in CFRP and FFRP
- 2022The performance of flax reinforced composites for wireless and sport applications : natural additives and sandwich concepts
- 2022Flax fibre sizings for fibre-reinforced thermosets - investigating the influences of different sizing agents on the composite properties
- 2022Bearing strength prediction by cfrp and ffrp dam age onset criteria for riveted joints
- 2022Impact and fatigue tolerant natural fibre reinforced thermoplastic composites by using non-dry fibrescitations
- 2022Impact and fatigue tolerant natural fibre reinforced thermoplastic composites by using non-dry fibrescitations
- 2021Modulating impact resistance of flax epoxy composites with thermoplastic interfacial tougheningcitations
- 2021One surface treatment, multiple possibilities : Broadening the use‐potential of para‐aramid fibers with mechanical adhesioncitations
- 2021One surface treatment, multiple possibilitiescitations
- 2021Microscale sensor solution for data collection from fibre-matrix interfacescitations
- 2021One Surface Treatment, Multiple Possibilities: Broadening the Use-Potential of Para-Aramid Fibers with Mechanical Adhesioncitations
- 2021Effect of graphene oxide surface treatment on the interfacial adhesion and the tensile performance of flax epoxy compositescitations
- 2017Synergistic role of in-situ crosslinkable electrospun nanofiber/epoxy nanocomposite interlayers for superior laminated compositescitations
Places of action
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thesis
Interfacial Toughening Strategies for Impact and Fatigue Tolerant Structural Biocomposites
Abstract
Biocomposites reinforced with continuous natural plant fibres such as flax can replace conventional composites in various fields. For instance, flax fibres have higher density-normalised stiffness than glass fibres, higher damping than synthetic fibres, environmental merits, and good end-of-life options. Although the industry regulations on energy consumption and circularity have continuously accelerated the production volume of flax fibre reinforced structural composites, their share in the plastics and composites market is not yet optimum. One of the main issues is their long-term durability under dynamic loading conditions, which is critical for their main application fields, such as boats, sports and automotive. Regardless of the type of polymer matrices and their toughness, flax fibre composites subjected to impact and fatigue loading present brittle behaviour.<br/><br/>In this thesis, various interfacial toughening strategies and their effects on low- velocity impact resistance and fatigue performance of flax fibre composites are elucidated. The aim was to promote energy dissipation through interfacial sliding between fibre-matrix while providing sufficient interfacial adhesion for effective load transfer between fibre and matrix. The three main strategies were: (i) to deposit functionalised multi-layer graphene oxide crystals on the fibre to enable synergy between interfacial adhesion and sliding under dynamic loads, (ii) to coat fibres with a biobased thermoplastic coating to create a ductile phase between flax-epoxy, and (iii) to benefit from ductility of non-dried fibres through moisture insensitive in-situ polymerisation of the poly (methyl methacrylate) (PMMA) thermoplastic resin.<br/><br/>The interfacial toughening results showed the possibility of creating synergy between properties such as stiffness and toughness for flax-PMMA and flax-epoxy composites with 40−100% better impact perforation energy, suppressed fibre failure, and 17−20% better fatigue performance. The scientific impact of this thesis was to elaborate on dynamic failure modes and means to tailor natural plant fibre composites as durable structural materials for sports and automotive applications.