Embedded and surface-mounted fiber optic sensors for civil structural monitoring

Inaudi, Daniele; Casanova, N.; Kronenberg, Pascal; Marazzi, Silvio; Vurpillot, Samuel

doi:10.1117/12.274668

Cited by 23 publications

(15 citation statements)

References 10 publications

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“…Further, longer base-lengths help to reduce misleading measurements stemming from material non-homogeneities. A good representative of long base-length fibre optic sensors is the SOFO measurement technique developed by Inaudi et al 11,13 This measuring system is based on the principle of low-coherence interferometry. The infrared emission of a light emitting diode is launched into a standard single mode fibre and directed, through a coupler, towards two fibres mounted on or embedded in the structure to be monitored ( Figure 4).…”

Section: Deformation and Displacement Measurementsmentioning

confidence: 99%

Global monitoring concepts for bridges

Bergmeister¹,

Santa²

2001

Structural Concrete

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Life extension and replacement strategies are crucial issues in an efficient highway infrastructure management system. Due to normative and budgetary constraints, knowledge of the integrity of in-service structures on a continuous time basis has to be an ultimate objective of owners as well as maintenance authorities. A key component of any infrastructure management system is a set of surveillance techniques to assess the conditions of existing structures. Recent progress in the development of sensing technologies and material/structure damage characterisation combined with current data processing techniques have resulted in a significant interest in diagnostic tools to monitor structural integrity and to detect structural diseases. The comparison of measured and calculated behaviour in order to tune and calibrate mechanical and numerical model assumptions is an essential part of any system analysis. Once a model has achieved a certain level of completeness and validity, analytical prediction provides a quantitative knowledge of structural performance and safety assessment.

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Section: Deformation and Displacement Measurementsmentioning

confidence: 99%

Global monitoring concepts for bridges

Bergmeister¹,

Santa²

2001

Structural Concrete

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“…These sensors are widely immune against rough environmental conditions and show good longterm performance. The center wavelength ?o of the reflected spectral band is defined by the Bragg condition (2). This creates a Bragg grating in the core of the optical fiber, which acts essentially as a wavelength selective mirror.…”

Section: Deformation and Displacement Measurementsmentioning

confidence: 99%

<title>Global monitoring concept for bridges</title>

Bergmeister¹,

Santa²

2000

SPIE Proceedings

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Knowledge of the integrity of rn-service structures on a continuous time basis is an ultimate objective for owners and maintenance authorities. The development of a life extension and/or replacement strategy for highway structures is a crucial point in an effective bridge management system. A key component of such a bridge management system is a means of surveillance techniques and determining the condition of an existing structure within the normative and budgetary constraints. Recent advances in sensing technologies and material/structure damage characterization combined with current developments in computations and communications have resulted in a significant interest in developing diagnostic technologies for monitoring the integrity of and for the detection of damages of structures. To identify anomalies and deterioration processes, it is essential to understand the relationships between the signal measurements and the real occurred phenomena. Therefore, the comparison of measured and calculated data in order to tune and validate the mechanical and numerical model assumptions is an integral part of any system analysis. Finally, the interpreted results of all measurements should be the basis for the condition assessment and the safety evaluation of a structure to facilitate replacement and repair decisions.

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“…Sensors adapted to direct concrete embedding or surface mounting on existing structures. Figure 3 shows the SOFO reading unit, Figure 4 a SOFO sensor [4] installed along a rebar:…”

Section: Other Characteristicsmentioning

confidence: 99%

Embedded and surface-mounted fiber optic sensors for civil structural monitoring

Cited by 23 publications

References 10 publications

Global monitoring concepts for bridges

Global monitoring concepts for bridges

<title>Global monitoring concept for bridges</title>

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

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