Development of a methodology for evaluation of a structural damage in turbine blades from hydropower generators - Sobrinho, Edvaldo; Sanomya, Rodrigo; Ueda, Rui; Tiba, Hamilton; Tsuzuki, Marcos de Sales Guerra; Adamowski, Júlio Cezar; Silva, Emílio Carlos Nelli; Carbonari, Ronny Calixto; Buiochi, Flávio (International Congress of Mechanical Engineering, 2009)