Paper Title:
Model Based Online Diagnosis of Rotating Machinery Structural Damage
  Abstract

Structural damage often happens in rotating machinery such as steam engines, aircraft engines, and compressors due to the high-speed rotating of the shaft. The most common structural damages in rotating machinery are rotor shaft crack, rotor to stator rub, and bolts looseness and so on. In the present paper, the model based identification method is used to detect single structural damage such as crack, rotor to stator rub, pedestal looseness, and also, coupling fault such as rotor to stator rub and crack, crack and pedestal looseness. Utilizing the characteristic that equivalent loads of rub forces are internal forces, and the equivalent loads of the crack are external moments, the coupling faults of crack and rub-impact and crack and pedestal looseness are analyzed and exampled. The merit of the method is that it is an online diagnosis method, which provides early warning of machine failure. Theoretical simulation and laboratory testing are conducted to validate the method.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
2289-2292
DOI
10.4028/www.scientific.net/KEM.353-358.2289
Citation
H. L. Yao, C. Y. Zhao, W. Sun, B. C. Wen, "Model Based Online Diagnosis of Rotating Machinery Structural Damage", Key Engineering Materials, Vols. 353-358, pp. 2289-2292, 2007
Online since
September 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Dong Xiang Jiang, Liang You Hong, Qian Huang
Abstract:In order to find the cause of the shaft crack appeared in a 600MW steam turbine generator, several measurements are taken. The shaft assembly...
591
Authors: Wen Zeng, X.Z. Zhu, Z.J. Wei
Abstract:The nonlinear dynamic model of a gear-shaft-housing system is established by using finite element method (FEM). The nonlinear dynamic...
805
Authors: Rui Zhang, Wen Xing Ma, Xiu Quan Lu
Chapter 2: Materials Science in Computer-Aided Manufacturing and Design
Abstract:In view of the complex vibration characteristics of hydrodynamic coupling, dynamic analysis of hydrodynamic coupling is carried out by finite...
236
Authors: Fu Ze Xu, Xue Jun Li, Guang Bin Wang, Da Lian Yang
Chapter 8: Fault Diagnosis and Signal Processing
Abstract:It is common for the imbalance-crack coupling fault in rotating machinery, while the crack information is often overshadowed by unbalanced...
675
Authors: M. Beldi, Z. Lamia
Chapter 23: Mechanical and Electronic Engineering Control
Abstract:A new numerical method for the study of elasto-acoustic structures coupled with fluid-filled cavities has been developed. This method...
1691