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.
Original language | English |
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Title of host publication | 2015 International Conference on Noise and Fluctuations, ICNF 2015 |
Publisher | IEEE |
ISBN (Electronic) | 9781467383356 |
DOIs | |
Publication status | Published - 2 Oct 2015 |
Event | International Conference on Noise and Fluctuations, ICNF 2015 - Xian, China Duration: 2 Jun 2015 → 6 Jun 2015 |
Conference
Conference | International Conference on Noise and Fluctuations, ICNF 2015 |
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Country/Territory | China |
City | Xian |
Period | 2/06/15 → 6/06/15 |
Keywords
- Damage Detection
- Noise Immunity Capability
- Pseudo-Excitation Approach
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Acoustics and Ultrasonics