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

被引：10
|
作者：
Bhagi, Loveleen Kumar [1 ]
Rastogi, Vikas [2 ]
Gupta, Pardeep [1 ]
机构：
[1] St Longowal Inst Engn & Technol, Dept Mech Engn, Longowal 148106, Punjab, India
[2] Delhi Technol Univ, Dept Mech Prod Ind & Automobile Engn, Delhi 10042, India
来源：
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2017年 / 31卷 / 01期
关键词：
Steam turbine blade; Fracture; Corrosion; Fatigue; Friction damper; Bondgraph modeling; FAILURE;
D O I：
10.1007/s12206-016-1203-5
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
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 methods to reduce the blade fatigue subsequently through computation and to enhance the fatigue strength of the steam turbine blade. In order to reduce the blade fatigue susceptibility and to enhance the fatigue life of the steam turbine blade, the wedge shape friction damper is proposed.
引用
收藏
页码：17 / 27
页数：11
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