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| Tual, Nicolas; Carrere, N.; Davies, Peter; Bonnemains, T.; Lolive, E.. |
| In recent years, many tidal turbine projects have been developed using composites blades. Tidal turbine blades are subject to ocean forces and sea water aggressions, and the reliability of these components is crucial to the profitability of ocean energy recovery systems. The majority of tidal turbine developers have preferred carbon/epoxy blades, so there is a need to understand how prolonged immersion in the ocean affects these composites. In this study the long term behaviour of different carbon/epoxy composites has been studied using accelerated ageing tests. A significant reduction of composite strengths has been observed after saturation of water in the material. For longer immersions only small further changes in these properties occur. No... |
| Tipo: Text |
Palavras-chave: Carbon; Seawater ageing; Diffusion; Mechanical testing. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00278/38964/37504.pdf |
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| Le Duigou, Antoine; Bourmaud, Alain; Davies, Peter; Baley, Christophe. |
| Innovation in sailing yacht design must include current environmental concerns such as resource depletion and waste management. Indeed most of the materials used today are petro-based and cannot offer viable end of life treatment. Fully biodegradable natural fibre reinforced biopolymers are being increasingly studied as they offer high specific stiffness and low environmental footprint. However, their ageing mechanisms are still not well understood. The present article gives information on 2 years natural seawater aging effect on injection-molded Flax/PLA biocomposite. Biocomposites suffer from relatively high moisture absorption which is controlled by the vegetal fibres. Simple rules of mixtures allow the determination of weight gain for flax fibres which... |
| Tipo: Text |
Palavras-chave: Natural fibre composites; Seawater ageing; Damage mechanism. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00211/32191/30681.pdf |
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