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JSIR Vol.66(07) [July 2007] >


Title: Analysis of transient thermal cycling for life assessment of steam turbine rotors
Authors: Prasad, Y Maruthi
Shukla, A K
Roy, Amitava
Keywords: Creep
Fatigue
Life assessment
Steam turbine rotor
Thermal stress
Issue Date: Jul-2007
Publisher: CSIR
IPC CodeF01B21/04
Abstract: Transient temperatures and stresses in the rotor during start-up and shut down cycles were evaluated using finite element analysis. Thermal gradients developed during thermal transients are the key source of stress generation in the rotor. Stress-strain response during thermal transients revealed non-proportional loading at the rotor surface and proportional loading in the rotor. Life assessment methodology of turbine rotors subjected to thermal power plant operating conditions is presented. Predictions from linear damage summation are compared with the results of nondestructive study of an actual steam turbine rotor.
Page(s): 536-544
ISSN: 0022-4456
Source:JSIR Vol.66(07) [July 2007]

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