Fiber optic sensors for smart structures

Measures, Raymond M.; LeBlanc, Michel; Liu, K.; Ferguson, Suzanne M.; Valis, Tomas; Hogg, D.; Turner, Roderick D.; McEwen, Keith

doi:10.1016/0143-8166(92)90005-r

Cited by 20 publications

(13 citation statements)

References 19 publications

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“…Collection of a single beam sample spectrum (sample in this case is a strained fiber) 3 . Collection of a single beam sample spectrum (sample in this case is a strained fiber) 3 .…”

Section: Resultsmentioning

confidence: 99%

<title>Strain monitoring by evanascent wave spectroscopy</title>

et al. 1999

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Prior interferometric (strain/temperature) fiber sensors and evanescent wave (chemical) fiber sensors have proven useful in obtaining information about portions of the lifetime of a composite material. The overall goal of this research is to develop an infrared (IR) evanescent wave sensor system that can be used to monitor lifetime of a polymer matrix composite.In this regard, a single fused silica core fiber was placed across a miniature materials tester (MINIMAT), while simultaneously having the fiber ends attached to an infrared spectrometer. The fiber was strained in increments by the MLNIMAT, while the IR spectrometer allowed simultaneous determination of the JR spectrum. An increase in baseline absorbance across the entire JR spectrum occurred as the strain increased. The increase in absorbance is related to au increase in strain in the fiber. From regression analysis of independent measurements of fiber strain and absorbance, a strong relation between the change in absorbance and change in strain energy was found. Future work will involve incorporation of the strain sensing approach with evanescent wave chemical sensing to allow total lifetime monitoring of polymer matrix composites.

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“…Collection of a single beam sample spectrum (sample in this case is a strained fiber) 3 . Collection of a single beam sample spectrum (sample in this case is a strained fiber) 3 .…”

Section: Resultsmentioning

confidence: 99%

<title>Strain monitoring by evanascent wave spectroscopy</title>

et al. 1999

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“…Fibre-optical strain sensors have been embedded in composite panels and used to measure strain with high sensitivity [6].…”

Section: Temperaturelstrain Discriminationmentioning

confidence: 99%

Optical Fibre‐based Vectoral Shape Sensor

Burnett¹,

Blanchard²,

Greenaway³

2000

Strain

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Optically broadband interferometric techniques have been developed into cost effective and practical systems that enable the discrimination of strain and temperature in fibre optic sensors. Recent developments of temperature-insensitive strain and shape-sensing fibre-optic sensors are described. A variety of approaches are discussed that have led to recent development of multicore, temperatureinsensitive vector bend sensors.

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“…Leung [ 20 ] reviewed the applications of optical fiber sensors for monitoring of concrete structures. Measures et al [ 21 ] overviewed the research on the development of structurally integrated optical fiber sensors for the smart structures. Merzbacher et al [ 22 ] reviewed the strain monitoring of concrete structures by use of optical fiber sensors.…”

Section: Introductionmentioning

confidence: 99%

Structural Health Monitoring of Civil Infrastructure Using Optical Fiber Sensing Technology: A Comprehensive Review

Han

2014

The Scientific World Journal

212

128

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In the last two decades, a significant number of innovative sensing systems based on optical fiber sensors have been exploited in the engineering community due to their inherent distinctive advantages such as small size, light weight, immunity to electromagnetic interference (EMI) and corrosion, and embedding capability. A lot of optical fiber sensor-based monitoring systems have been developed for continuous measurement and real-time assessment of diversified engineering structures such as bridges, buildings, tunnels, pipelines, wind turbines, railway infrastructure, and geotechnical structures. The purpose of this review article is devoted to presenting a summary of the basic principles of various optical fiber sensors, innovation in sensing and computational methodologies, development of novel optical fiber sensors, and the practical application status of the optical fiber sensing technology in structural health monitoring (SHM) of civil infrastructure.

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Fiber optic sensors for smart structures

Cited by 20 publications

References 19 publications

<title>Strain monitoring by evanascent wave spectroscopy</title>

<title>Strain monitoring by evanascent wave spectroscopy</title>

Optical Fibre‐based Vectoral Shape Sensor

Structural Health Monitoring of Civil Infrastructure Using Optical Fiber Sensing Technology: A Comprehensive Review

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