Impact of Manufacturing Tolerances on Stress in a Turbine Blade Fir-Tree Root
Low Cycle Fatigue (LCF) is one of most common mechanisms behind turbine blade failures.The reason is high stress concentration in notch areas, like fir-tree root groves, which can cause cyclic stress beyond the safe threshold.The stress levels strictly depend on the manufacturing accuracy of the fir-tree lock (for both fitted together: blade root a