Fatigue of steam turbine blades at resonance conditions

被引：23

作者：

Rodriguez, J. A. ^{[1
]}

Castro, L. ^{[1
]}

Tejeda, A. L. ^{[1
]}

Garcia, J. C. ^{[1
]}

Rodriguez, J. M. ^{[2
]}

Galindo, E. ^{[1
]}

El Hamzaoui, Y. ^{[3
]}

机构：

[1] Univ Autonoma Estado Morelos, Ctr Invest Ingn & Ciencias Aplicadas, Av Univ 1001, Cuernavaca 62209, Morelos, Mexico

[2] Ctr Natl Invest & Desarrollo Tecnol, Interior Interado Palmira S-N, Cuernavaca 262490, Morelos, Mexico

[3] Univ Autonoma Carmen, Fac Ingn, Ciudad Del Carmen 24180, Campeche, Mexico

来源：

ENGINEERING FAILURE ANALYSIS | 2019年 / 104卷

关键词：

Resonance conditions; Crack propagation; Useful life estimation; VIBRATION ANALYSIS; METHODOLOGY;

D O I：

10.1016/j.engfailanal.2019.05.027

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Different problems are presented in the steam turbines and their components. Rotor blades in the steam turbines are the most important component and, where failures occur frequently, particularly in the blades of the last low-pressure stages (LP) the useful life of the steam turbines is affected. These blades are subjected to alternating stresses, steady steam bending and severe centrifugal loads. For the above mentioned, a study was carried out on a blade of the last LP stage. In this work, the fatigue analysis of steam turbine blades was performed; crack initiation and propagation in blades were also analyzed under normal operation and at resonance conditions. The results showed that the crack initiation and crack propagation occur in fewer cycles under resonance conditions. When a crack appears it causes changes in the blade stiffness and if in addition, the blade is working under resonance conditions, their natural frequencies and the blade material decrease its fatigue strength.

引用

页码：39 / 46

页数：8

共 50 条

[31] Reliability design method for steam turbine blades
Shanghai Power Equipment Research Institute, Shanghai 200240, China
[J]. Yingyong Lixue Xuebao, 2007, 2 (331-334):
[32] Continuous monitoring of the life of steam turbine blades
Liu, K.M.
[J]. VGB-Kraftwerkstechnik, 1988, 68 (07): : 704 - 709
[33] Holographic vibratory analysis of steam turbine blades
Drouin, B
[J]. SECOND INTERNATIONAL CONFERENCE ON VIBRATION MEASUREMENTS BY LASER TECHNIQUES: ADVANCES AND APPLICATIONS, 1996, 2868 : 400 - 411
[34] THE REFURBISHMENT OF ROTATING STEAM-TURBINE BLADES
HENDELMAN, JC
BAZZINI, RJ
[J]. MARINE TECHNOLOGY AND SNAME NEWS, 1990, 27 (06): : 356 - 360
[35] Reconditioning of steam turbine blades and rotor disks
Zhuchenko L.A.
Kortenko V.V.
Sakhnin Yu.A.
Ermolaev V.V.
[J]. Power Technology and Engineering, 2002, 36 (2) : 64 - 66
[36] MACHINING STEAM-TURBINE BLADES AND NOZZLES
SEARLE, AA
[J]. MACHINERY AND PRODUCTION ENGINEERING, 1975, 127 (3268): : 74 - 78
[37] Reliability design method for steam turbine blades
Shi J.
[J]. Frontiers of Energy and Power Engineering in China, 2008, 2 (4): : 363 - 368
[38] Improved resonance method for fatigue test of full-scale wind turbine blades
Zhou, Aiguo
Shi, Jinlei
Ma, Yi
Xu, Xiufeng
[J]. AIP ADVANCES, 2022, 12 (08)
[39] Fatigue strength of gas turbine compressor blades
Troshchenko, VT
Prokopenko, AV
[J]. ENGINEERING FAILURE ANALYSIS, 2000, 7 (03) : 209 - 220
[40] Estimation of Dynamic Stresses in Last Stage Steam Turbine Blades Under Reverse Flow Conditions
Rao, J. S.
Peraiah, K. Ch.
Singh, Udai Kumar
[J]. ADVANCES IN VIBRATION ENGINEERING, 2009, 8 (01): : 69 - 78

← 1 2 3 4 5 →