Turbine blade fatigue life evaluating method

In order to provide a turbine blade fatigue life evaluating method for quantitively evaluating the fatigue life of a turbine blade, the turbine blade is determined to be within its fatigue life if the creep elongation strain in the longitudinal direction of the turbine blade is less than 0.5% of an...

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Bibliographische Detailangaben
Hauptverfasser: Soechting, Friedrich, Ellis, Charles, Tomita, Yasuoki, Tokunaga, Yugo
Format: Patent
Sprache:eng
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Zusammenfassung:In order to provide a turbine blade fatigue life evaluating method for quantitively evaluating the fatigue life of a turbine blade, the turbine blade is determined to be within its fatigue life if the creep elongation strain in the longitudinal direction of the turbine blade is less than 0.5% of an initial length, and is determined to exceed its fatigue life if the creep elongation strain is 0.5% or more than the initial length. A turbine blade creep elongation strain measuring apparatus comprises a first fixed end , a second fixed end , and a dial gauge . A dimension in the longitudinal direction is stamped on the surface of a turbine blade.