Tailoring the design of a trailing edge sub-component test
- 1. Division Structural Components, Fraunhofer Institute for Wind Energy and Energy System Technology IWES Northwest
Description
The new design guidelines promote the implementation of structural sub-component testing in the wind turbine rotor blade design certification process. These could enhance the structural reliability and augment the structural optimization of the rotor blade segments or components along the blade span. Moreover, design changes or even local repairs can be evaluated and re-certified while avoiding the full-scale test costs. In the current study, a generic tailoring procedure is introduced for the design of a trailing edge sub-component test. A step by step methodology is described towards the selection of the specimen geometry, the load introduction position and the experimental setup. The numerical model used is based on a 34 m wind turbine rotor blade structure available in IRPWind WP7. The design objective of the sub-component test is to match the structural static and fatigue response of the aforementioned rotor blade full-scale certification test results. Therefore, analytical and numerical models are developed and the derived structural responses are discussed. Although the proposed methodology is not limited from the test setup, the presented study case is developed for a configuration adapted to a universal, uniaxial 2.5MN hydraulic testing machine.
Notes
Files
Rosemeier_Massart_Antoniou_2016_Tailoring_the_design_of_a_trailing_edge_sub-component_test.pdf
Files
(1.2 MB)
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