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Adhesive material is one of the main and fragile component in wind turbine blades. Being large in size compared to the conventional ones, the wind turbine blades are manufactured with composite materials. Generally blades are made by upper and lower sections separately and are joined together by adhesive materials. New generation wind turbines with an increased blade length makes the assembly procedure complicated for the blade manufacturers. Also the adhesive material failure is dependent on the rate of stress transfer between composite and adhesive materials. So, it becomes essential to study the bonding failure both in local and global scale of wind turbine blades. In this paper, we discuss an influence of lay-up orientation of the composite material on the failure of adhesive material used in wind turbine model for macro-scale and single-lap-joint model for meso-scale study.
adhesive bonding, failure, wind turbine blade, composite material, finite element analysis.
This work is part of the EVEREST project managed by IRT Jules Verne (French Institute of Research and Technology in Advanced Manufacturing Technologies for Composite, Metallic and Hybrid Structures). The authors wish to thank the industrial and academic partners of this project; respectively ALSTOM, Europe Technologies, IFSTTAR, UBS, ENSAM Angers, CNRS.
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