Abstract
Brillouin optical time domain analysis (BOTDA) is considered as an effective health monitoring (long distance distributed strain and temperature measurement) technique for different structures such as pavements, buildings and oil pipes. In this paper, the BOTDA sensing technology is used for measuring cracks on small scale concrete beam. It is found from the experimental results that the existence of large tensile cracks in concrete beam can be identified with the BOTDA sensing technology. The measured strain increases faster after the tensile crack occurs at the bottom of the concrete beam. Based on the experimental study, the advantages of the fiber optic BOTDA sensing technology are: (a) the loop installation method is effective for strain measurement, and (b) large tensile cracks in concrete beam can be identified.
Original language | English |
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Title of host publication | Proceedings of the 2nd International Postgraduate Conference on Infrastructure and Environment, IPCIE 2010 |
Pages | 22-28 |
Number of pages | 7 |
Volume | SUPPL. |
Publication status | Published - 1 Dec 2010 |
Event | 2nd International Postgraduate Conference on Infrastructure and Environment, IPCIE 2010 - Hong Kong, Hong Kong Duration: 1 Jun 2010 → 2 Jun 2010 |
Conference
Conference | 2nd International Postgraduate Conference on Infrastructure and Environment, IPCIE 2010 |
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Country/Territory | Hong Kong |
City | Hong Kong |
Period | 1/06/10 → 2/06/10 |
Keywords
- BOTDA
- Large tensile cracks
- Loop installation method
- Small scale concrete beam
ASJC Scopus subject areas
- Building and Construction
- General Environmental Science