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

[1] Erosion-fatigue of steam turbine blades
Azevedo, C. R. F.
Sinatora, A.
[J]. ENGINEERING FAILURE ANALYSIS, 2009, 16 (07) : 2290 - 2303
[2] Corrosion-Fatigue in Steam Turbine Blades
Salzman, R. N.
Rieger, N. F.
Tschegg, S.
Schoenbauer, B.
Turnbull, A.
Zhou, S.
Gandy, D.
[J]. ADVANCES IN MATERIALS TECHNOLOGY FOR FOSSIL POWER PLANTS: PROCEEDINGS FROM THE SIXTH INTERNATIONAL CONFERENCE, 2010, 2011, : 450 - 469
[3] Improvement of corrosion fatigue limit of steam turbine blades
Thauvin, G
Vittemant, B
[J]. REVUE DE METALLURGIE-CAHIERS D INFORMATIONS TECHNIQUES, 1996, 93 (05): : 673 - &
[4] STEAM TURBINE LOW PRESSURE BLADES FATIGUE FAILURES CAUSED BY OPERATIONAL AND EXTERNAL CONDITIONS
Mazur, Zdzislaw
Garcia-Illescas, Rafael
Hernandez-Rossette, Alejandro
[J]. PROCEEDINGS OF THE ASME TURBO EXPO 2009, VOL 6, PTS A AND B, 2009, : 93 - 106
[5] Fatigue of steam turbine blades with damage on the leading edge
Shlyannikov, V. N.
Yarullin, R. R.
Zakharov, A. P.
[J]. 20TH EUROPEAN CONFERENCE ON FRACTURE, 2014, 3 : 1792 - 1797
[6] FRETTING INDUCED FATIGUE FAILURE IN STEAM TURBINE BLADES
Gowreesan, Vamadevan
Grebinnyk, Kyrylo
[J]. PROCEEDINGS OF THE ASME TURBO EXPO: TURBOMACHINERY TECHNICAL CONFERENCE AND EXPOSITION, 2019, VOL 8, 2019,
[7] Conditions leading to corrosion damage of steam turbine blades during turbine shutdowns
Pomenic, L
[J]. PROCEEDINGS OF THE 6TH INTERNATIONAL DESIGN CONFERENCE: DESIGN 2000, 2000, : 141 - 146
[8] Fatigue failure of low pressure steam turbine blades of a power plant
Kasiviswanathan, KV
Muralidharan, NG
Raghu, N
Raj, B
[J]. TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 2000, 53 (03): : 445 - 450
[9] Corrosion fatigue failure of steam turbine moving blades: A case study
Katinic, Marko
Kozak, Drazan
Gelo, Ivan
Damjanovic, Darko
[J]. ENGINEERING FAILURE ANALYSIS, 2019, 106
[10] CORROSION OF STEAM TURBINE BLADES
HESSAM, K
[J]. CHEMICAL AND PROCESS ENGINEERING, 1971, 52 (08): : 45 - &

← 1 2 3 4 5 →