Journal
WIND ENERGY
Volume 24, Issue 10, Pages 1071-1082Publisher
WILEY
DOI: 10.1002/we.2617
Keywords
coatings; leading edge erosion; wind energy; X-ray tomography
Categories
Funding
- Innovation Foundation of Denmark [8055-00012A, 6154-00018B]
Ask authors/readers for more resources
X-ray tomography revealed air bubbles in the top coat of wind turbine blades, impacting the crack initialization and overall performance. Coating systems with fewer bubbles showed significant advantage in performance on the rain erosion tester.
Leading edge erosion on a wind turbine blade from Vindeby offshore wind farm is characterized by X-ray tomography, and air bubbles within the top coat are observed. Similar coating systems with and almost without air bubbles within the top coat are tested on a R&D Test Systems style whirling arm rain erosion tester (RET) and found to have different V-N curves. In general, the slope of the two curves was comparable. However, the absolute performance value with RET differs significantly with up to 2.6 times performance advantage to the coating with less bubbles. A micromechanical model of the coating system that takes the air bubbles into account has been developed, and air bubbles are found to have critical effect on the crack initialization in the coating.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available