Epoxy based matrix systems and adhesives for future rotor blade application

For liquid resin systems, a comparison of specific static and fatigue properties is drawn between epoxy (EP) and vinyl ester (VE) matrices. By the example of a 40 m rotor blade it could be demonstrated that under consideration of the better transverse strength of an UD-laminate in EP compared to VE, the rotor blade mass for the latter would have to be nearly 8 p.c. higher to have the same out-of-plane deflection at extreme load.