Distributed fibre-optic strain sensors - Revision history

Designing Buildings at 07:07, 16 December 2020

2020-12-16T07:07:49Z

← Older revision		Revision as of 07:07, 16 December 2020
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	The development of distributed fibre-optic strain sensors has resulted in new techniques for monitoring structures and infrastructure such as foundations, embankments and tunnel linings. They offer the opportunity for cost-effectively sensing strain and temperature with a spatial resolution of around 1 metre using conventional fibre-optic cable, either attached to or embedded in a structure. Bending in the cable creates strain in the fibre which can be measured with a fibre optic analyser using the BOTDR (Brillouin Optical Time Domain Reflectometer) or BOTDA (Brillouin Optical Time Domain Analysis) technique. There is no wiring and no electromagnetic interference.		The development of distributed fibre-optic strain sensors has resulted in new techniques for monitoring structures and infrastructure such as foundations, embankments and tunnel linings. They offer the opportunity for cost-effectively sensing strain and temperature with a spatial resolution of around 1 metre using conventional fibre-optic cable, either attached to or embedded in a structure. Bending in the cable creates strain in the fibre which can be measured with a fibre optic analyser using the BOTDR (Brillouin Optical Time Domain Reflectometer) or BOTDA (Brillouin Optical Time Domain Analysis) technique. There is no wiring and no electromagnetic interference.

	Distributed fibre-optic strain sensors can be used for:		Distributed fibre-optic strain sensors can be used for:
−	*The measurement of strain in foundations.	+
−	*Failure prediction in tunnels and bridges.	+	* The measurement of strain in foundations.
−	*The measurement of strain in oil, gas, and water pipelines.	+	* Failure prediction in tunnels and bridges.
−	*Monitoring embankments to predict landslides.	+	* The measurement of strain in oil, gas, and water pipelines.
−	*Measuring structural deformation in nuclear facilities.	+	* Monitoring embankments to predict landslides.
		+	* Measuring structural deformation in nuclear facilities.

	Crucial to the effectiveness of this technique of monitoring is the method of attachment to structures. It is important to avoid unintentional twisting or damage to the fibre optic cable and to make sure that the sensor does not creep from attachment points, producing measurement errors. This involves not only the selection of suitable attachment technologies, but also appropriate installation training.		Crucial to the effectiveness of this technique of monitoring is the method of attachment to structures. It is important to avoid unintentional twisting or damage to the fibre optic cable and to make sure that the sensor does not creep from attachment points, producing measurement errors. This involves not only the selection of suitable attachment technologies, but also appropriate installation training.
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	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===
−	*Vibration Energy Harvesters	+
		+	* Vibration Energy Harvesters

	=== External references ===		=== External references ===
−	*Cambridge Smart Infrastructure and Construction (CSIC), Distributed fibre-optic strain sensors.

−	[[Category:~~Products_/_components~~]] [[Category:DCN_Product_Knowledge]]	+	* Cambridge Smart Infrastructure and Construction (CSIC), Distributed fibre-optic strain sensors.
		+
		+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Products_/_components]]

Designing Buildings at 13:02, 28 September 2015

2015-09-28T13:02:07Z

← Older revision		Revision as of 13:02, 28 September 2015
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	=== External references ===		=== External references ===
−	*Cambridge Smart Infrastructure and Construction (CSIC), ~~[http://www-smartinfrastructure.eng.cam.ac.uk/CSICprojects/csiccollaborativeprojects/DFOS~~ Distributed fibre-optic strain sensors].	+	*Cambridge Smart Infrastructure and Construction (CSIC), Distributed fibre-optic strain sensors.

−	[[Category:Products_/_components]]	+	[[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

Designing Buildings at 11:56, 7 November 2013

2013-11-07T11:56:49Z

← Older revision		Revision as of 11:56, 7 November 2013
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−	The development of distributed fibre-optic strain sensors has resulted in new techniques for monitoring structures and infrastructure such as foundations, embankments, and tunnel linings. They offer the opportunity for cost-effectively sensing strain and temperature with spatial resolution of around 1 metre using conventional fibre-optic cable either attached to or embedded in a structure. Bending in the cable creates strain in the fibre which can be measured with a fibre optic analyser using the BOTDR (Brillouin Optical Time Domain Reflectometer) or BOTDA (Brillouin Optical Time Domain Analysis) technique. There is no wiring and no electromagnetic interference.	+	The development of distributed fibre-optic strain sensors has resulted in new techniques for monitoring structures and infrastructure such as foundations, embankments and tunnel linings. They offer the opportunity for cost-effectively sensing strain and temperature with a spatial resolution of around 1 metre using conventional fibre-optic cable, either attached to or embedded in a structure. Bending in the cable creates strain in the fibre which can be measured with a fibre optic analyser using the BOTDR (Brillouin Optical Time Domain Reflectometer) or BOTDA (Brillouin Optical Time Domain Analysis) technique. There is no wiring and no electromagnetic interference.

−	Distributed fibre-optic strain sensors can be used for	+	Distributed fibre-optic strain sensors can be used for:
	*The measurement of strain in foundations.		*The measurement of strain in foundations.
	*Failure prediction in tunnels and bridges.		*Failure prediction in tunnels and bridges.
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	= Find out more =		= Find out more =

−	Related articles on Designing Buildings Wiki	+	=== Related articles on Designing Buildings Wiki ===
	*Vibration Energy Harvesters		*Vibration Energy Harvesters

−	External references	+	=== External references ===
	*Cambridge Smart Infrastructure and Construction (CSIC), [http://www-smartinfrastructure.eng.cam.ac.uk/CSICprojects/csiccollaborativeprojects/DFOS Distributed fibre-optic strain sensors].		*Cambridge Smart Infrastructure and Construction (CSIC), [http://www-smartinfrastructure.eng.cam.ac.uk/CSICprojects/csiccollaborativeprojects/DFOS Distributed fibre-optic strain sensors].

	[[Category:Products_/_components]]		[[Category:Products_/_components]]

Designing Buildings: Created page with " The development of distributed fibre-optic strain sensors has resulted in new techniques for monitoring structures and infrastructure such as foundations, embankments, and tunne..."

2013-11-07T11:23:18Z

Created page with " The development of distributed fibre-optic strain sensors has resulted in new techniques for monitoring structures and infrastructure such as foundations, embankments, and tunne..."

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The development of distributed fibre-optic strain sensors has resulted in new techniques for monitoring structures and infrastructure such as foundations, embankments, and tunnel linings. They offer the opportunity for cost-effectively sensing strain and temperature with spatial resolution of around 1 metre using conventional fibre-optic cable either attached to or embedded in a structure. Bending in the cable creates strain in the fibre which can be measured with a fibre optic analyser using the BOTDR (Brillouin Optical Time Domain Reflectometer) or BOTDA (Brillouin Optical Time Domain Analysis) technique. There is no wiring and no electromagnetic interference.

Distributed fibre-optic strain sensors can be used for
*The measurement of strain in foundations.
*Failure prediction in tunnels and bridges.
*The measurement of strain in oil, gas, and water pipelines.
*Monitoring embankments to predict landslides.
*Measuring structural deformation in nuclear facilities.

Crucial to the effectiveness of this technique of monitoring is the method of attachment to structures. It is important to avoid unintentional twisting or damage to the fibre optic cable and to make sure that the sensor does not creep from attachment points, producing measurement errors. This involves not only the selection of suitable attachment technologies, but also appropriate installation training.

= Find out more =

Related articles on Designing Buildings Wiki
*Vibration Energy Harvesters

External references
*Cambridge Smart Infrastructure and Construction (CSIC), [http://www-smartinfrastructure.eng.cam.ac.uk/CSICprojects/csiccollaborativeprojects/DFOS Distributed fibre-optic strain sensors].

[[Category:Products_/_components]]