Prediction of double-edge crack growth in blades under cyclic loading

Abstract The study aims to develop a predictive model for crack propagation in a blade's plate. The finite element method is employed to simulate the blade's entire structure. ANSYS software is utilized to model the plate and determine its natural frequencies under cyclic loading. The results obtained through the finite element method are compared with data from the literature to confirm the validity of the proposed model. Both natural and forced vibrations of the blade's plate, including double-edge cracks, are analyzed. Various crack sizes and locations are modeled to investigate their impact on the blade's behavior. The proposed model effectively identifies the crack in the plate that forms earlier and achieves a high accuracy in predicting the crack's size and location under cyclic loading.