Study of corrosive fatigue and life enhancement of low pressure steam turbine blade using friction dampers

@article{Bhagi2017StudyOC,
  title={Study of corrosive fatigue and life enhancement of low pressure steam turbine blade using friction dampers},
  author={Loveleen Kumar Bhagi and Vikas Rastogi and Pardeep Gupta},
  journal={Journal of Mechanical Science and Technology},
  year={2017},
  volume={31},
  pages={17-27}
}
The paper investigates the causes of failure of low pressure steam turbine blade of the last stage and suggests few techniques to overcome the failure causes is presented in this paper. The blade under investigation is made of chrome alloy steel. The fracture occurred at the airfoil region of the blade. The investigation included visual inspection, micro structural characterization, SEM-EDS microanalysis and spectroscopy test to identify the causes of failure. The paper also suggests the… 
9 Citations
Preliminary design of the last stage of supercritical steam turbine and proposition of anti-erosion coating for blades surface
In this article a preliminary design of the last stage of supercritical steam turbine has been presented. A computational model of supercritical thermal cycle has been created in order to determine
Study of Creep–Fatigue Crack Growth Behavior in a Gas Turbine Casing
AbstractA creep–fatigue crack growth on the outer surfaces of a turbine casing was assessed, and the turbine casing’s overall lifetime was predicted. The crack location, size, and direction were
Vibration analysis for detecting failure mode and crack location in first stage gas turbine blade
Structure frequency response testing “modal analysis” is an integral part of the development and testing of structures such as pistons, turbine blades, compressor blades, crankshafts, and connecting
Output characteristics of a horizontal type electro-hydraulic excitation system with inertial loading: Modeling and experimentation
In a conventional electro-hydraulic excitation system it is difficult to realize high frequency vibration, even though at the cost of a decreased hydraulic force. A 2D rotary valve, characterized by
Some Laboratory Tests Regarding the X20Cr13 Martensitic Stainless Steel Behaviour

References

SHOWING 1-10 OF 11 REFERENCES
Dynamic Modeling of Underplateform Damper used in Turbomachinery
The present work deals with the structural analysis of turbine blades and modeling of turbine blades. A common failure mode for turbine machines is high cycle of fatigue of compressor and turbine
A Review of Friction Damping of Turbine Blade Vibration
This paper reviews recent research on analyzing and designing friction dampers to reduce turbine blade vibration. It discusses previous literature reviews, methods of analysis, models of friction
Determination of Blade Stresses Under Constant Speed and Transient Conditions With Nonlinear Damping
Determination of resonant stresses is an important step in the life estimation of turbomachine blades. Resonance may occur either at a steady operating speed or under transient conditions of
Safe Diagram - A Design And Reliability Tool For Turbine Blading.
The complex field of turbine blade vibration has long been in need of improved tools to help predict the reliability of blading. The SAFE interference diagram is presented as such a tool. It presents
A Brief Review on Modeling Approaches of Friction Dampers Used in Turbomachinery
TLDR
The main purpose of this paper is to provide a detailed survey on various modeling approaches adopted in turbomachinery, especially kinematics modeling, finite element modeling, parametric modeling, harmonic balance analysis and bondgraph modeling.
...
1
2
...