Study of Creeping Effect on Prolonged Strength in Operation of Turbine Blades at Several Stationary Modes

Authors: Vasiiliev B.Ye. Published: 29.08.2013
Published in issue: #3(84)/2011  


Category: Dynamics, Strength, Reliability  
Keywords: turbine blade, creeping, equivalent reserve

For the turbine blade made of high-temperature nickel alloy, during the cyclically-varying operation, kinetics of the stress and strain state is determined and the reserve prolonged strength is obtained using different methods. The alternative technique is offered for determination of equivalent stresses and equivalent limit of prolonged strength of the blade material and also the appropriate local reserves of prolonged static strength.