Influence of running time under service conditions and thermal cycling on the fatigue life of the working blades of gas turbine engines

Influence of running time under service conditions and thermal cycling on the fatigue life of the working blades of gas turbine engines

The working blade of the first stage in a marine gas turbine engine made from the chromium-nickel alloy EI826 was studied. Tests were run under service conditions in the actual engine, and also in a gasdynamic test bed which applied cyclic thermal loading to the blade in a gas flow of variable param...

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Veröffentlicht in:Strength Mater. (USSR) (Engl. Transl.); (United States) 1976-02, Vol.8 (2), p.139-142
Hauptverfasser: Gryaznov, B. A., Kravchuk, L. V., Kosygin, . P., Konoplyanikov, E. G.
Format: Artikel
Sprache:eng
Schlagworte:
420200 - Engineering- Facilities, Equipment, & Techniques
ALLOYS
CHROMIUM ALLOYS
DATA
ENGINEERING
ENGINES
EXPERIMENTAL DATA
FATIGUE
GAS TURBINES
INFORMATION
MACHINERY
MECHANICAL PROPERTIES
NICKEL ALLOYS
NUMERICAL DATA
SERVICE LIFE
SHIPS
TESTING
THERMAL CYCLING
THERMAL FATIGUE
TRANSPORTATION SYSTEMS
TURBINE BLADES
TURBINES
TURBOMACHINERY
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Beschreibung
Zusammenfassung:The working blade of the first stage in a marine gas turbine engine made from the chromium-nickel alloy EI826 was studied. Tests were run under service conditions in the actual engine, and also in a gasdynamic test bed which applied cyclic thermal loading to the blade in a gas flow of variable parameters simulating the most dangerous transient working conditions of the engine. The residual service life was determined by the complete fracture method, using a VL-1 electrodynamic vibratory test machine. The procedure for the test is described.
ISSN:0039-2316
1573-9325
DOI:10.1007/BF01533018