Field Testing and Application of Fiber Optic Displacement Sensors in Civil Structures

Inaudi, Daniele

doi:10.1364/ofs.1997.ofa1

Cited by 21 publications

(10 citation statements)

References 10 publications

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“…More specifically, from Eqs. (20) and (21) we can deduce that this is always true up to R = 37%. The maximum number of fields depends on the sensitivity of the interrogation unit compared with the light source: for example, with the source and detector currently mounted in the SOFO interrogation unit, a loss of 20 dB seems to be tolerable [22].…”

Section: Limits Of the Technologymentioning

confidence: 65%

“…As better explained in the next section, SOFO is based on low-coherence double Michelson interferometers in tandem configuration. To date the SOFO system has been applied to bridges, dams, tunnels and in the laboratory, to monitor both the local properties of the construction materials and the overall behavior of the structure [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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Development and laboratory validation of in-line multiplexed low-coherence interferometric sensors

Pozzi

Zonta

et al. 2008

Optical Fiber Technology

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Section: Limits Of the Technologymentioning

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Development and laboratory validation of in-line multiplexed low-coherence interferometric sensors

Pozzi

Zonta

et al. 2008

Optical Fiber Technology

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“…The major disadvantage related to the use of the mentioned interferometric sensors for structural health monitoring purposes is their low multiplexing capability, which limits their application to the measurement of a relatively low number of points. SOFO sensors [ 23 , 24 ] using low-coherence interferometry have been applied with success to a wide range of SHM applications, from bridges to oil pipes. Unlike Fabry-Perot sensors, SOFO are long-gauge sensors with lengths that are typically in the centimetre range while offering micrometre resolution.…”

Section: Operating Principles and Technologiesmentioning

confidence: 99%

Fibre Optic Sensors for Structural Health Monitoring of Aircraft Composite Structures: Recent Advances and Applications

Sante

2015

Sensors

540

263

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In-service structural health monitoring of composite aircraft structures plays a key role in the assessment of their performance and integrity. In recent years, Fibre Optic Sensors (FOS) have proved to be a potentially excellent technique for real-time in-situ monitoring of these structures due to their numerous advantages, such as immunity to electromagnetic interference, small size, light weight, durability, and high bandwidth, which allows a great number of sensors to operate in the same system, and the possibility to be integrated within the material. However, more effort is still needed to bring the technology to a fully mature readiness level. In this paper, recent research and applications in structural health monitoring of composite aircraft structures using FOS have been critically reviewed, considering both the multi-point and distributed sensing techniques.

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“…In single-point sensing, the measurement is performed at a defined point along the fiber, usually at or near its end, as the case for most Fabry-Pérot (F-P) sensors. In long gage sensor the measurement is performed along usually 10 cm to 10 m sections of optical fiber, such as for the SOFO system [5]. For quasi-distributed OFS, a limited number of sensing points are physically located on the same fiber, as the case for fiber Bragg grating (FBG) dominating this type of sensor.…”

Section: Introductionmentioning

confidence: 99%

Fabry‐Pérot Fiber‐Optic Sensors for Physical Parameters Measurement in Challenging Conditions

Pinet

2009

Journal of Sensors

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Optical fiber sensors have unique advantages and distinctive features that make them very attractive for many applications especially those involving challenging conditions where other traditional electrical sensors usually fail. Among the commercially available optical fiber sensors, the Fabry-Pérot sensing technology is probably the most versatile and the most interesting one since a relatively low-cost universal signal conditioner could easily read compatible Fabry Pérot sensors measuring different physical parameters such as strain, temperature, pressure, displacement, or refractive index. This papers details the numerous advantages of this optical sensing technology and also summarizes the operating modes of commercially available signal conditioners and sensors.

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Field Testing and Application of Fiber Optic Displacement Sensors in Civil Structures

Cited by 21 publications

References 10 publications

Development and laboratory validation of in-line multiplexed low-coherence interferometric sensors

Development and laboratory validation of in-line multiplexed low-coherence interferometric sensors

Fibre Optic Sensors for Structural Health Monitoring of Aircraft Composite Structures: Recent Advances and Applications

Fabry‐Pérot Fiber‐Optic Sensors for Physical Parameters Measurement in Challenging Conditions

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