Title | ||
---|---|---|
Local Strand-Breakage Detection in Multi-Strand Anchorage System Using an Impedance-Based Stress Monitoring Method-Feasibility Study. |
Abstract | ||
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This study investigates the feasibility of impedance-based stress monitoring method for local-strand breakage detection in multi-strand anchorage systems. Firstly, stress fields of a multi-strand anchorage system are numerically analyzed to examine anchorage's responses sensitive to local strand breakage. Secondly, an impedance-based stress monitoring technique via the PZT interface is outlined. Thirdly, a novel hoop-type PZT interface is designed for the multi-strands anchorage to monitor the stress variation induced by the strand breakage. Local dynamic responses of the hoop-type PZT interface are analyzed to predetermine the effective frequency ranges. Finally, the numerical feasibility of the proposed method is verified on a seven-strand anchorage system under various strand breakage cases. Variations in impedance responses are statistically quantified, and broken strands are localized by linear tomography analysis of damage indices. A lab-scale experiment is also conducted on a multi-strands anchorage to evaluate the realistic performance of the hoop PZT interface for impedance-based stress monitoring method. |
Year | DOI | Venue |
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2019 | 10.3390/s19051054 | SENSORS |
Keywords | Field | DocType |
strand breakage detection,multi-strands system,impedance-based method,impedance signature,PZT interface | Stress monitoring,Electronic engineering,Electrical impedance,Engineering,Structural engineering,Effective frequency,Breakage | Journal |
Volume | Issue | ISSN |
19 | 5 | 1424-8220 |
Citations | PageRank | References |
0 | 0.34 | 2 |
Authors | ||
3 |
Name | Order | Citations | PageRank |
---|---|---|---|
Ngoc-Loi Dang | 1 | 0 | 1.35 |
Thanh-Canh Huynh | 2 | 2 | 3.28 |
Jeong Tae Kim | 3 | 0 | 1.35 |