NDLI: Crack identification in a rotor

Content Provider	IEEE Xplore Digital Library
Author	Zou, J. Hu, C.Q. Li, S.D. Dong, G.M.
Copyright Year	2011
Description	Author affiliation: State Key Lab of Mechanical System and Vibration, Shanghai Jiaotong University, 200240, China (Dong, G.M.) \|\| School of Mechanical Engineering, Qingdao Agricultural University, 266109, China (Zou, J.; Hu, C.Q.; Li, S.D.)
Abstract	A finite element (FE) model, which is based on transfer matrix analysis and local flexibility theorem, is introduced for crack identification of a static (non-rotating) rotor with an open crack. Through numerical simulation, the effects of the location and depth of the crack on the mode shapes and the changes in the eigenfrequencies of the cracked rotor are investigated, and the ratio of the changes in the first two eigenfrequencies is obtained for cracked rotor with different slenderness ratio. A crack identification algorithm that makes use of the translations of the first mode at two symmetric points and the changes in the first two eigenfrequencies to estimate the crack location and depth on the rotor is proposed, and an illustrative example demonstrates the availability and validity of the proposed algorithm.
Starting Page	498
Ending Page	503
File Size	729166
Page Count	6
File Format	PDF
ISBN	9781457708350
ISSN	20937121
e-ISBN	9788993215038
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-10-26
Publisher Place	Korea (South)
Access Restriction	Subscribed
Rights Holder	ICROS
Subject Keyword	Shape eigenfrequency Rotors Vectors Finite element methods finite element analysis Vibrations Shafts Analytical models crack local flexibility theorem slenderness ratio identification cracked rotor mode shape transfer matrix analysis
Content Type	Text
Resource Type	Article

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