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Evaluation of the durability of composite tidal turbine blades by Peter Davies, Grégory Germain, Benoît Gaurier, Amélie Boisseau, and Dominique Perreux.

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Presentation on theme: "Evaluation of the durability of composite tidal turbine blades by Peter Davies, Grégory Germain, Benoît Gaurier, Amélie Boisseau, and Dominique Perreux."— Presentation transcript:

1 Evaluation of the durability of composite tidal turbine blades by Peter Davies, Grégory Germain, Benoît Gaurier, Amélie Boisseau, and Dominique Perreux Philosophical Transactions A Volume 371(1985):20120187 February 28, 2013 ©2013 by The Royal Society

2 Tidal turbine test pyramid. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

3 Test set-up for static cyclic tests in sea water. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

4 Natural sea water ageing facility. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

5 Weight gains in sea water. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

6 Influence of wet ageing (sea water 60°C) on quasi-static flexural behaviour of E-glass/epoxy composites. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

7 Influence of wet ageing (sea water 60°C) on fatigue behaviour. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

8 Static flexural stiffness of blades. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

9 Model turbine with strain-gauged composite blades before flume tank immersion. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

10 Flume tank, IFREMER Boulogne Centre, showing wave generator. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

11 Tensile strains on polyurethane blades at 100 r.p.m. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

12 Strains and drag force measured on glass mat-reinforced blade versus TSR. (a) Strains for different flow speeds. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

13 (a) Drag force and (b) reduced strain evolution with time and the fast Fourier transform. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

14 Construction of digital model of blade using laser scanner. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

15 Numerical model. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

16 Example of model result showing velocity (m s−1) and pressure (Pa) fields around turbine blade (current flow 0.1 m s−1). Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

17 Influence of manufacturing quality on fatigue performance. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society

18 Current turbine prototype, for manufacturing study and cyclic tests. Peter Davies et al. Phil. Trans. R. Soc. A 2013;371:20120187 ©2013 by The Royal Society


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