NDLI: Damage detection based on sparse virtual element boundary measurement with enhanced noise immunity under weak formulation

Content Provider	IEEE Xplore Digital Library
Author	Chao Zhang Li Cheng Jinhao Qiu
Copyright Year	2015
Description	Author affiliation: SKL of Mech. & Control of Mech. Struct., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China (Jinhao Qiu) \|\| Res. Inst., Hong Kong Polytech. Univ. Shenzhen, Shenzhen, China (Chao Zhang; Li Cheng)
Abstract	The recently proposed “Weak” formulation of the Pseudo-Excitation (PE) approach was shown to exhibit high noise tolerant ability along with a number of appealing features for identifying structural damages in a thin-walled structure. However, the method requires the dense displacement field measurement in the inspection region. To tackle the problem, a “weak” formulation based on virtual element boundary measurement (VEBM) is proposed in this paper. By dividing the entire structure into several “virtual elements” and tuning the frequency to the natural frequency of the “virtual element”, VEBM allows reliable damage detection by using only a small number of measurement points at the virtual element boundary. The effectiveness of the VEBM was validated numerically and experimentally using a cantilever beam containing a small damaged zone. Results demonstrated that VEBM was able to achieve good detection results by using a small number of measurement points, whist providing enhanced noise immunity capability against measurement uncertainties.
Starting Page	1
Ending Page	4
File Size	892707
Page Count	4
File Format	PDF
e-ISBN	9781467383356
DOI	10.1109/ICNF.2015.7288546
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-02
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vibrations Noise Damage Detection Inspection Extraterrestrial measurements Frequency measurement Noise measurement Indexes Noise Immunity Capability Pseudo-Excitation Approach
Content Type	Text
Resource Type	Article

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