Fatigue Damage And Residual Properties Of Decommissioned FRP Composite Material Wind Turbine Blades

Abstract
Many FRP composite material structures are subjected to cyclic or dynamic loading. This includes airplanes, automobiles, and wind turbine blades in addition to buildings and bridges. Appropriate assessment of their fatigue damage and residual strength can be important not only for their structural integrity and decisions related to their repair during service, but also crucial for the reuse of the materials when they come to the end of their service lives. This paper presents a review of available fatigue damage models for FRP and how they may be used to estimate the residual strength of the FRP material in relevant structures, with particular emphasis on FRP blades in wind turbines.

Keywords
All FRP structures, Fatigue, Damage, Dynamic loads, Residual strength, Wind turbines.