Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Reexamination Certificate
2006-01-10
2006-01-10
Raevis, Robert (Department: 2856)
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
Reexamination Certificate
active
06983659
ABSTRACT:
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 apparatus20comprises a first fixed end21, a second fixed end22, and a dial gauge24. A dimension in the longitudinal direction is stamped on the surface of a turbine blade.
REFERENCES:
patent: 1532297 (1925-04-01), Bausch et al.
patent: 4956925 (1990-09-01), East
patent: 5166892 (1992-11-01), Inoue et al.
patent: 5238366 (1993-08-01), Ferleger
patent: 5287631 (1994-02-01), Stade
patent: 6568254 (2003-05-01), Pross
patent: 11-248605 (1999-09-01), None
patent: 2000-249666 (2000-09-01), None
Wang Yan-rong et al., “Experimental Evaluation of High Temperature Low Cycle Fatigue/Creep Life of Turbine Blade”, Journal of Aerospace Power, vol. 17, No. 4, Oct. 2002 (with English Abstract).
Zhou Bal-zhuo et al., “Life Prediction Considering Creep and Stress Relaxation for Gas Turbine Engine Hot Section”, Journal of Aerospace Power, vol. 18, No. 3, Jun. 2003 (with English Abstract).
Meng Chun-ling et al., “Study of Predict Methods about Creep Break Life of Turbine Blade”, Journal of Beijing Technology and Business University (Natural Science Edition), vol. 20, Jun. 2002 (with English Abstract).
Li Wei et al., “Research on Experimental Technique for Fatigue-Creep Life of the Turbine Blade in Aeroengine”, Journal of Aerospace Power, vol. 16, No. 4, Oct. 2001 (with English Abstract).
Ellis Charles
Soechting Friedrich
Tokunaga Yugo
Tomita Yasuoki
Mitsubishi Heavy Industries Ltd.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Raevis Robert
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