ガスタービン翼用耐熱超合金の疲労・クリープ寿命評価法とそれに基づく冷却翼の寿命評価の概念について

概要

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At first, this paper examined strain controlled low cycle fatigue (LCF) and fatigue-creep interaction (FCI) Iife for superalloys, for examle, single crystal, directionally solidified and conventional cast superalloys of gas turbine blade and vane. And a frequency-modified total strain energy parameter, obtained from total tensile strain energy and tensile loading time, for evaluating failure life of these Ni and Co based superalloys under LCF and FCI conditions was proposed. Next, it was shown that temperature and stress-strain behavior for air cooled-blade and vane of gas turbine in the survice condition. Then it was descrived that the utility of life prediction technique was evaluated using frequency-modified total strain energy parameter for air cooled-blade and vane of gas turbine.
社団法人日本ガスタービン学会の論文
1995-06-10