**4. Conclusions**

This paper discusses the fluid–structure coupling calculation method in order to explore the stress distribution of a 1.5 MW wind turbine during strong winds. By combining the numerical simulation results and the UAV observation experiments, we can comprehensively determine the failure area and failure mode of the blade and draw the following conclusions:


**Author Contributions:** K.T. contributed to the conception of the study and wrote the manuscript. L.S. reviewed and edited the manuscript. Y.C. was responsible for preparing the methodology. X.J. was responsible for the technical support. R.F. provided the experimental data support. R.T. helped perform the analysis with constructive discussions. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by the Inner Mongolia Science and Technology Project Plan (2019), which was funded by the Department of Science and Technology in the Inner Mongolia Autonomous Region. (No grant number).

**Data Availability Statement:** Not applicable.

**Acknowledgments:** The wind speed model and wind field environmental data that were selected for the numerical simulation in this article were provided by the Inner Mongolia Electric Power Research Institute Branch of the Inner Mongolia Electric Power (Group) Co., Ltd. and the Guoshui Group Huade Wind Power Co., Ltd. We would like to express our sincere thanks to them.

**Conflicts of Interest:** The authors declare no conflict of interest.

#### **Abbreviations**


#### **References**

