An analytical method for the strength reliability of the same-stage-blade system was proposed.The method covers numerical simulation and determination of the correlation coefficients of the same-stage-blade material strength and the strength limit state function.Moreover
the narrow limit formula for the same-stage-blade system strength reliability was presented.Then
the reliability calculation methods of the same-stage-blade system strength were discussed by taking into account failure-related factors.Finally
a numerical example of same-stageblade system was given to demonstrate the efficiency of the method.