Model Based Online Diagnosis of Rotating Machinery Structural Damage

Abstract:

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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

Citation:

H. L. Yao et al., "Model Based Online Diagnosis of Rotating Machinery Structural Damage", Key Engineering Materials, Vols. 353-358, pp. 2289-2292, 2007

Online since:

September 2007

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Price:

$38.00

[1] Bangchun Wen, et al.: Theory and experiment of nonlinear dynamics in fault rotating machinery. (China science press, Beijing, China, 2004 ).

[2] R. Markert, R. Platz and M. Seidler, in: Proceedings of the 8th international symposium on transport phenomena and dynamics of rotating machinery, ISROMAC-8, Vol. II (2000), p.900.

[3] S. SEIBOLD AND K. WEINERT: Journal of Sound and Vibration Vol. 195(1)(1996), p.57.

[4] G.M. Dong , J. Chen, J. Zou: European Journal of Mechanics A/Solids Vol. 23 (2004), p.325.

[5] J.R. Jain , T.K. Kundra: Mechanics Research Communications Vol. 31 (2004), p.557.

[6] A.S. Sekhar: Journal of Sound and Vibration. Vol. 270 (2004), p.887.

[7] N. Bachschmid, P. Pennacchi, E. Tanzi, A. Vania: Identification of transverse crack position and depth in rotor system. Meccanica, Vol. 35(2000), p.563.

DOI: https://doi.org/10.1023/a:1010562205385

[8] H.D. Nelson, J.M. McVaugh: ASME, Journal of Engineering for Industry, Vol. 593 (1976) p.60.

[9] Hongliang Yao, Qingkai Han, Bangchun Wen: Damage Assessment of Structure 2005, p.475.

[10] Hongliang Yao, Xiaowei Zhang, Changli Liu, Wen Bangchun: International journal of plant engineering and management. Vol. 9(2004), p.110.

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