Mitsubishi Heavy Industries Limited

Yugo Tokunaga

Yasuoki Tomita

Friedrich Soechting

Charles Ellis

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 apparatuscomprises 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.

Turbine blade fatigue life evaluating method

In order to provide a turbine blade creep life evaluating method for quantitively evaluating the life of a turbine blade, the turbine blade is determined to be within its allowable 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 allowable life if the creep elongation strain is 0.5% or more than the initial length. A turbine blade creep elongation strain measuring apparatuscomprises 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.

Growing community of inventors

Takasago, Japan

Yugo Tokunaga