NDLI: State recognition of viscoelastic sandwich structures based on permutation entropy and generalized Chebyshev support vector machine

Content Provider	IEEE Xplore Digital Library
Author	Jinxiu Qu Zhousuo Zhang Xue Luo Bing Li Jinpeng Wen
Copyright Year	2015
Description	Author affiliation: Inst. of Syst. Eng., China Acad. of Eng. Phys., Mianyang, China (Jinpeng Wen) \|\| State Key Lab. for Manuf. Syst. Eng., Xi'an Jiaotong Univ., Xi'an, China (Jinxiu Qu; Zhousuo Zhang; Xue Luo; Bing Li)
Abstract	Viscoelastic sandwich structures are widely used in mechanical equipment, yet viscoelastic materials always suffer from aging which changes the dynamic characteristics of the structure and affects the whole performance of the equipment. Therefore, state recognition of viscoelastic sandwich structures is very necessary for monitoring structural health states and keeping the equipment running reliably. Considering the high nonlinearity on the dynamic characteristics and the strong non-stationarity of vibration response signals, a novel method based on permutation entropy (PE) and generalized Chebyshev support vector machine (GCSVM) is proposed in this paper. For obtaining more effective state information, redundant second generation wavelet packet transform is firstly used to process the non-stationary vibration response signals, and then PE features are extracted from the resultant wavelet packet coefficients to reveal the changes of the nonlinear dynamic characteristics. Aiming at improving the generalization ability of SVM, based on generalized Chebyshev kernel, the GCSVM is introduced to classify the various structural states. In order to demonstrate the effectiveness of the proposed method, different structural states are created by the accelerated aging experiment of viscoelastic material. The testing results show that the proposed method is effective for state recognition of viscoelastic sandwich structures, which has more strong generalization ability and can achieve higher recognition accuracy than that of the wavelet SVM.
Starting Page	957
Ending Page	962
File Size	1552046
Page Count	6
File Format	PDF
ISBN	9781479961146
DOI	10.1109/I2MTC.2015.7151399
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-11
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Support vector machines Vibrations Viscoelastic sandwich structures Redundant second generation wavelet packet transform Generalized Chebyshev support vector machine Chebyshev approximation Feature extraction Wavelet packets Permutation entropy State recognition Kernel Sandwich structures
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in