Multicrack Localization in Rotors Based on Proper Orthogonal Decomposition Using Fractal Dimension and Gapped Smoothing Method
Joint Authors
Ouyang, Huajiang
Lu, Zhiwen
Dong, Dawei
Cao, Shancheng
Hua, Chunrong
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-09-29
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
Multicrack localization in operating rotor systems is still a challenge today.
Focusing on this challenge, a new approach based on proper orthogonal decomposition (POD) is proposed for multicrack localization in rotors.
A two-disc rotor-bearing system with breathing cracks is established by the finite element method and simulated sensors are distributed along the rotor to obtain the steady-state transverse responses required by POD.
Based on the discontinuities introduced in the proper orthogonal modes (POMs) at the locations of cracks, the characteristic POM (CPOM), which is sensitive to crack locations and robust to noise, is selected for cracks localization.
Instead of using the CPOM directly, due to its difficulty to localize incipient cracks, damage indexes using fractal dimension (FD) and gapped smoothing method (GSM) are adopted, in order to extract the locations more efficiently.
The method proposed in this work is validated to be effective for multicrack localization in rotors by numerical experiments on rotors in different crack configuration cases considering the effects of noise.
In addition, the feasibility of using fewer sensors is also investigated.
American Psychological Association (APA)
Lu, Zhiwen& Dong, Dawei& Cao, Shancheng& Ouyang, Huajiang& Hua, Chunrong. 2016. Multicrack Localization in Rotors Based on Proper Orthogonal Decomposition Using Fractal Dimension and Gapped Smoothing Method. Shock and Vibration،Vol. 2016, no. 2016, pp.1-17.
https://search.emarefa.net/detail/BIM-1118866
Modern Language Association (MLA)
Lu, Zhiwen…[et al.]. Multicrack Localization in Rotors Based on Proper Orthogonal Decomposition Using Fractal Dimension and Gapped Smoothing Method. Shock and Vibration No. 2016 (2016), pp.1-17.
https://search.emarefa.net/detail/BIM-1118866
American Medical Association (AMA)
Lu, Zhiwen& Dong, Dawei& Cao, Shancheng& Ouyang, Huajiang& Hua, Chunrong. Multicrack Localization in Rotors Based on Proper Orthogonal Decomposition Using Fractal Dimension and Gapped Smoothing Method. Shock and Vibration. 2016. Vol. 2016, no. 2016, pp.1-17.
https://search.emarefa.net/detail/BIM-1118866
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1118866