Macro and meso-scale study in composite lay-up orientation effect on adhesive material used in wind turbine blades

摘要

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.