Temperature and strain sensing techniques using brillouin optical time domain reflectometry
Distributed strain sensing based on Brillouin Optical Time Domain Reflectometry (BOTDR) is seen as one of the most promising monitoring tools for assessing the performance of civil and geotechnical structures. Due to the distributed nature of fiber optic sensor, BOTDR not only useful to monitor the...
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| Format: | Book Section |
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SPIE
2012
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| _version_ | 1796857484949848064 |
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| author | Mohamad, Hisham |
| author2 | Matikas, T. E. |
| author_facet | Matikas, T. E. Mohamad, Hisham |
| author_sort | Mohamad, Hisham |
| collection | ePrints |
| description | Distributed strain sensing based on Brillouin Optical Time Domain Reflectometry (BOTDR) is seen as one of the most promising monitoring tools for assessing the performance of civil and geotechnical structures. Due to the distributed nature of fiber optic sensor, BOTDR not only useful to monitor the structures deformation in terms of global behavior, but also effectively detects anomalies in localized scale. Since the sensor has the ability to measure strain and temperature simultaneously, it is important that methods to separate the temperature effects are fully understood. Four known methods used to compensate temperature from BOTDR strain readings are briefly reviewed. Regardless of what method being used, this paper aims to clarify the importance of firstly calibrating the thermal characteristic of optical cables and determine the coefficient thermal expansion of the measurement host or structure. Example of BOTDR thermal measurement of an earth retaining structure is presented. |
| first_indexed | 2024-03-05T18:58:29Z |
| format | Book Section |
| id | utm.eprints-36040 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T18:58:29Z |
| publishDate | 2012 |
| publisher | SPIE |
| record_format | dspace |
| spelling | utm.eprints-360402017-02-02T05:52:42Z http://eprints.utm.my/36040/ Temperature and strain sensing techniques using brillouin optical time domain reflectometry Mohamad, Hisham TA Engineering (General). Civil engineering (General) Distributed strain sensing based on Brillouin Optical Time Domain Reflectometry (BOTDR) is seen as one of the most promising monitoring tools for assessing the performance of civil and geotechnical structures. Due to the distributed nature of fiber optic sensor, BOTDR not only useful to monitor the structures deformation in terms of global behavior, but also effectively detects anomalies in localized scale. Since the sensor has the ability to measure strain and temperature simultaneously, it is important that methods to separate the temperature effects are fully understood. Four known methods used to compensate temperature from BOTDR strain readings are briefly reviewed. Regardless of what method being used, this paper aims to clarify the importance of firstly calibrating the thermal characteristic of optical cables and determine the coefficient thermal expansion of the measurement host or structure. Example of BOTDR thermal measurement of an earth retaining structure is presented. SPIE Matikas, T. E. Peters, K. J. Ecke, W. 2012 Book Section PeerReviewed Mohamad, Hisham (2012) Temperature and strain sensing techniques using brillouin optical time domain reflectometry. In: Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2012. SPIE, Bellingham, USA, pp. 1-13. ISBN 978-081949003-2 http://dx.doi.org/10.1117/12.918329 DOI:10.1117/12.918329 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Mohamad, Hisham Temperature and strain sensing techniques using brillouin optical time domain reflectometry |
| title | Temperature and strain sensing techniques using brillouin optical time domain reflectometry |
| title_full | Temperature and strain sensing techniques using brillouin optical time domain reflectometry |
| title_fullStr | Temperature and strain sensing techniques using brillouin optical time domain reflectometry |
| title_full_unstemmed | Temperature and strain sensing techniques using brillouin optical time domain reflectometry |
| title_short | Temperature and strain sensing techniques using brillouin optical time domain reflectometry |
| title_sort | temperature and strain sensing techniques using brillouin optical time domain reflectometry |
| topic | TA Engineering (General). Civil engineering (General) |
| work_keys_str_mv | AT mohamadhisham temperatureandstrainsensingtechniquesusingbrillouinopticaltimedomainreflectometry |