Quantitative Damage Assessment of Hybrid Composite Wind Turbine Blades by Energy Based Acoustic Emission Source Location

Abstract : Acoustic emission technology was applied to assess the damage in the wind turbine blade. It was tried to apply a new source location method, which has a developed algorithm ourself with energy contour mapping concept. Firstly, we acquired energy based contour map database for tested blade section. And then, we measured the activities and the intensity of each arrival signals for several types of damage sources. That is, this study aims to locate and evaluate the damages such as internal damages or foreign impacts etc.. In this study, we focused to enhance a source location method with energy contour map which is developed already, and to develop a new damage index for more clear damage identification. For damage indexing, we found the correlation between corresponding energy and distance from source. Then, after calculating the location of damage source, we can doing more quantitative assessment using pre-acquired damage indexing. Consequently, the applicability of new source location method was confirmed by comparison of the result of source location and experimental damage location. From several experimental results, new suggested method of damage index identification showed very good performance for assessment of damages in the hybrid composites structures.
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Communication dans un congrès
Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014
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  • HAL Id : hal-01021222, version 1

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Dong-Jin Yoon, Byeong-Hee Han. Quantitative Damage Assessment of Hybrid Composite Wind Turbine Blades by Energy Based Acoustic Emission Source Location. Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014. 〈hal-01021222〉

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