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Kensche, C.W. (1992) Fatigue of GFRP in Wind Turbine Rotor Blades. DLR-Forschungsbericht. 92-17. 79 S.
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Abstract
In the 20-years' life time of wind turbines, the rotor blades achieve more than 10 exponent 8 load cycles. However, for a reliable life time prediction high-cycle fatigue data were missed up to now. Within a CEC programme, therefore relevant investigations on both GI-Ep specimens and spar beams including the load attachment to the hub were carried out. The experiments enclosed sinusoidal one-step tests and the wind energy-specific load sequence WISPER. For the GI-Ep specimens a life time prediction was performed with the linear Miner rule on the basis of a constant amplitude life diagram designed by the fatigue data. Concerning the spar beams it was shown that they safely can withstand maximum strains of more than -0.6 per cent. Frequency response and damping measurements were carried out at certain stages during service life but could not discover an impending failure.
| Item URL in elib: | https://elib.dlr.de/40100/ | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Document Type: | Monograph (DLR-Forschungsbericht) | ||||||||
| Additional Information: | LIDO-Berichtsjahr=1992, | ||||||||
| Title: | Fatigue of GFRP in Wind Turbine Rotor Blades | ||||||||
| Authors: |
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| Date: | 1992 | ||||||||
| Open Access: | No | ||||||||
| Number of Pages: | 79 | ||||||||
| Status: | Published | ||||||||
| Keywords: | Wind Turbines, Rotor Blades, High-Cycle Fatigue, Coupon Specimens, Spar Beams | ||||||||
| HGF - Research field: | Energy | ||||||||
| HGF - Program: | Renewable Energies | ||||||||
| HGF - Program Themes: | E SF - Solar research (old) | ||||||||
| DLR - Research area: | Energy | ||||||||
| DLR - Program: | E SF - Solar research | ||||||||
| DLR - Research theme (Project): | UNSPECIFIED | ||||||||
| Location: | Stuttgart | ||||||||
| Institutes and Institutions: | Institute of Structures and Design | ||||||||
| Deposited By: | DLR-Beauftragter, elib | ||||||||
| Deposited On: | 02 Apr 2006 | ||||||||
| Last Modified: | 27 Apr 2009 11:04 |
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