08 CASE STUDY 05 Repeated Blade Failure in the same row INTRODUCTION We have come across several instances of repeated failures of specific row of blade on turbine rotor of various makes and various clients in India and abroad. The challenge was to identify the root cause of failures on the specific row of blade, take up necessary design up gradation& incorporate the same during manufacturing of new blades. Existing blade root, profile and nozzles design were analysed individually and together. This is done by analysing LCF, HCF and other analysis as required using the latest software. This enables us to decide the necessary improvements in design to be made whether on root, profile or nozzles to achieve the operating parameters and boundary conditions without undue stresses We have

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