Identification of causes of radial fan failure

During operation of the radial fan with a diameter of the rotating wheel of approximately 3 m the machine crashed. The goal of the analysis by numerical and experimental methods of mechanics was to identify failure sequences of the individual parts of the fan and their reasons. Analysis of residual stresses in the rotating wheel of the fan as well as measurement of vibrodiagnostic parameters in the running fan of the same type were used to solve the task.