Prevention of Cyclic Thermal-Stress Cracking in Steam-Turbine Rotors

[+] Author and Article Information
W. R. Berry, Ivar Johnsson

Westinghouse Electric Corporation, Lester, Pa.

J. Eng. Power 86(3), 361-367 (Jul 01, 1964) (7 pages) doi:10.1115/1.3677607 History: Received July 22, 1963; Online January 10, 2012


Recent experience with cracking of the outer surface of load-cycled, high-pressure, steam-turbine rotors is analyzed as a thermal stress-fatigue problem. Cyclic strains are evaluated as a function of the operating transient and of the detailed rotor geometry. Operating recommendations are given with the aim of reducing the incidence of such cracking.

Copyright © 1964 by ASME
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