Structural Monitoring with Fiber Optic Technology

Measures, Raymond M.

doi:10.1115/1.1445327

Cited by 162 publications

(194 citation statements)

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“…Proof tests are then carried out by manufactures to guarantee a safe operating stress and a predictable life. Typically, optical fibers are proof tested to 0.35 Gpa, corresponding to about 0.5% strain (Measures, 2001). For most sensor applications, the strength of silica fiber is much higher than that of structural members to be measured.…”

Section: Materials Propertiesmentioning

confidence: 99%

“…Typical mechanical properties of the optical fiber (Fernando et al, 2002;Measures, 2001) Optical fibers are drawn from a molten glass perform. Although fluorozirconate, fluoroaluminate, and chalcogenide glasses as well as crystalline materials like sapphire, are used for optical fibers, silica is the most common material, especially for optical fiber sensing applications.…”

Section: Materials Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

Mechanical Property and Strain Transferring Mechanism in Optical Fiber Sensors

Li¹,

Ren²,

Li³

2012

Fiber Optic Sensors

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Section: Materials Propertiesmentioning

confidence: 99%

Section: Materials Propertiesmentioning

confidence: 99%

Mechanical Property and Strain Transferring Mechanism in Optical Fiber Sensors

Li¹,

Ren²,

Li³

2012

Fiber Optic Sensors

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“…Kalin et al (2006) has suggested that FOSs could provide a good alternative to existing systems. The advantages of FOSs for long-and short-term bridge monitoring have been well documented in the literature (Casas and Cruz, 2003;Inaudi, 2010;Maaskant et al, 1997;Measures, 2001).…”

Section: Introductionmentioning

confidence: 96%

Bridge weigh-in-motion using fibre optic sensors

Lydon¹,

Taylor²,

Doherty³

et al. 2017

Proceedings of the Institution of Civil Engineers - Bridge Engi

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Bridge weigh-in-motion systems were introduced in the 1970s as a structural health monitoring tool for road bridges. They help bridge operators determine the cause of induced strain in bridges and collect statistics on vehicle weight, class and frequency. There have been over 3000 installations in 25 countries worldwide, which has led to vast improvements in data post-processing. However, existing systems are based on electrical resistance strain gauges, which can be prohibitive in achieving data for long-term monitoring of rural bridges due to power consumption. This paper introduces a new low-power system using fibre optic sensors, which has been pioneered in Northern Ireland. A series of fibre optic sensors were attached to the soffit of an existing integral bridge with a single span of 19 m. The site selection criteria and full installation process are described in this paper. A method of calibration was adopted using live traffic at the bridge site, based on which the accuracy of the system was determined. New methods of axle detection for bridge weigh-in-motion were investigated and verified in the field.

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“…Also, FBGs are also designed for applications in the measurement at high temperatures (1100ºC), such as boilers, pipes and even nuclear reactors [16], and measurement at low temperatures (-253ºC), such as in the monitoring of cryogenic systems [17]. [18], inside of bearings and thyristor bridges [19]; dynamic monitoring of composite structures in service, allowing thermal expansion monitoring; movement of the foundation piles to monitor their integrity [20] and to the study of mechanical deformation from latex paint drying process [21].…”

Section: Fbg Technologymentioning

confidence: 99%