Articles | Volume 5, issue 2
Wind Energ. Sci., 5, 675–684, 2020
https://doi.org/10.5194/wes-5-675-2020

Special issue: Wind Energy Science Conference 2019

Wind Energ. Sci., 5, 675–684, 2020
https://doi.org/10.5194/wes-5-675-2020

Research article 28 May 2020

Research article | 28 May 2020

A novel rotor blade fatigue test setup with elliptical biaxial resonant excitation

David Melcher et al.

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Cited articles

DNV GL AS: DNVGL-ST-0376 – Rotor blades for wind turbines, available at: https://rules.dnvgl.com/docs/pdf/DNVGL/ST/2015-12/DNVGL-ST-0376.pdf (last access: 7 June 2019), 2015. 
Eder, M. A., Belloni, F., Tesauro, A., and Hanis, T.: A multi-frequency fatigue testing method for wind turbine rotor blades, J. Sound Vib., 388, 123–140, https://doi.org/10.1016/j.jsv.2016.10.032, 2017. 
Greaves, P. R.: Wind Turbine Blade Fatigue Test Drag Coefficient CFD, ORE Catapult, https://doi.org/10.13140/RG.2.2.24839.01441, 2020. 
Greaves, P. R., Dominy, R. G., Ingram, G. L., Long, H., and Court, R.: Evaluation of dual-axis fatigue testing of large wind turbine blades, P. I. Mech. Eng. C-J. Mec., 226, 1693–1704, https://doi.org/10.1177/0954406211428013, 2012. 
Heijdra, J., Borst, M., and Van Delft, D.: Wind turbine blade structural performance testing, in: Advances in Wind Turbine Blade Design and Materials, Woodhead Publishing, Sawston, Cambridge, UK, https://doi.org/10.1533/9780857097286.3.432, 432–445, 2013. 
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Short summary
When a new rotor blade is designed, a prototype needs to be qualified by testing in two separate directions before it can be used in the field. These tests are time-consuming and expensive. Combining these two tests into one by applying loads in two directions simultaneously is a possible method to reduce time and costs. This paper presents a new computational method, which is capable of designing these complex tests and shows exemplarily that the combined test is faster than traditional tests.