Locating Damage Using Integrated Global-Local Approach with Wireless Sensing System and Single-Chip Impedance Measurement Device

This study developed an integrated global-local approach for locating damage on building structures. A damage detection approach with a novel embedded frequency response function damage index (NEFDI) was proposed and embedded in the Imote2.NET-based wireless structural health monitoring (SHM) system...

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Bibliographic Details
Published in:TheScientificWorld 2014-01, Vol.2014 (2014), p.1-13
Main Authors: Lin, Tzu-Hsuan, Hung, Shih-Lin, Lu, Yung-Chi
Format: Article
Language:English
Subjects:
Civil engineering
Composite materials
Equipment and supplies
Equipment Failure
Integrated approach
Methods
Neural networks
Power
Principal components analysis
Sensors
Software
Structural analysis (Engineering)
Technology application
Wireless communications
Wireless sensor networks
Wireless Technology
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Summary:This study developed an integrated global-local approach for locating damage on building structures. A damage detection approach with a novel embedded frequency response function damage index (NEFDI) was proposed and embedded in the Imote2.NET-based wireless structural health monitoring (SHM) system to locate global damage. Local damage is then identified using an electromechanical impedance- (EMI-) based damage detection method. The electromechanical impedance was measured using a single-chip impedance measurement device which has the advantages of small size, low cost, and portability. The feasibility of the proposed damage detection scheme was studied with reference to a numerical example of a six-storey shear plane frame structure and a small-scale experimental steel frame. Numerical and experimental analysis using the integrated global-local SHM approach reveals that, after NEFDI indicates the approximate location of a damaged area, the EMI-based damage detection approach can then identify the detailed damage location in the structure of the building.
ISSN:2356-6140
1537-744X
1537-744X
DOI:10.1155/2014/729027