This study, realized in the Spanish public research organization CEDER-CIEMAT in 2015, compares computational Finite Element Method to experimental method in order to evaluate the accuracy of the first one. The simulations and experiments have been done for a small scale wind turbine blade, the Ceder 1500, in order to find its eigenfrequencies, strains and deflections under different loading conditions. Thanks to that comparison between both methods and a reverse engineering method, Ceder 1500 blade's mechanical properties have been determined and are exposed in this paper. To conclude, an analysis of the results and an improvement research for the model are presented.