Health monitoring of composite plastic waterworks lock gates using in-fibre Bragg grating sensors

Bugaud, M.; Ferdinand, Pierre; Rougeault, S.; Dewynter-Marty, V.; Parneix, Patrick; Lucas, Dominique

doi:10.1088/0964-1726/9/3/312

Cited by 12 publications

(11 citation statements)

References 14 publications

(14 reference statements)

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“…In particular, an array of Bragg grating has been installed in the Mont Terri tunnel in Switzerland. The LETI group in France has also used this technology to monitored lock gates [13] and is introducing the system in the nuclear power industry [14], while EMPA (Swiss Federal Laboratories for Materials Testing and Research) has installed them in the Luzzone Dam [15] and in a cable-stayed bridge. Finally, the University of Cantabria in Spain is developing sensors for the electrical power generation industry including strain and acceleration sensors (also base on other sensing techniques) [16].…”

Section: Bragg Grating Strain Sensorsmentioning

confidence: 99%

Lessons Learned in the Use of Fiber Optic Sensor for Civil Structural Monitoring / Erfahrungen aus der Anwendung faseroptischer Sonden für die Überwachung von Tragwerken

Inaudi

Casanova

Glišić

et al. 2001

Restoration of Buildings and Monuments

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From many points of view, fiber optic sensors are the ideal transducers for civil structural monitoring. Being durable, stable and insensitive to external perturbations, they are particularly interesting for the long-term health assessment of civil structures. On the other hand, the small size and the relative fragility of the naked fibers are apparently incompatible with the hostile environment usually found in civil engineering building sites. In this contribution we will, however, show that with adequate packaging and careful design of the sensors and their accessories, fiber optic sensors can match and surpass conventional sensors, not only in their measurement performance, but also in the ease of use and survivability. This paper resumes the nine year long experience of our group in the installation of fiber optic sensors in the most diverse structure types, including bridges, tunnels, dams, piles, anchors, historical monuments, nuclear power plants and many others. To date, we have installed about Γ300 sensors in almost 70 different applications. Statistics show that, by proper handling, it is possible to achieve 95-100% survivability during installation and for many years afterward.

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Section: Bragg Grating Strain Sensorsmentioning

confidence: 99%

Lessons Learned in the Use of Fiber Optic Sensor for Civil Structural Monitoring / Erfahrungen aus der Anwendung faseroptischer Sonden für die Überwachung von Tragwerken

Inaudi

Casanova

Glišić

et al. 2001

Restoration of Buildings and Monuments

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“…The system is completely insensitive to optical power fluctuations due to bending losses, splices or connectors. Specific software developed at CEA-LETI, performs in real-time data acquisition, signal processing, results display and storage (Bugaud et al, 1998). Typical experimental strain shifts obtained with these FBG sensors are presented by Bocherens et al (2000).…”

Section: Principles Of Microbending-otdr and Fbg Sensorsmentioning

confidence: 99%

Comparison between Non-Destructive Evaluation Techniques and Integrated Fiber Optic Health Monitoring Systems for Composite Sandwich Structures

Balageas

Bourasseau

Dupont

et al. 2000

Journal of Intelligent Material Systems and Structures

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Non-Destructive Evaluation (NDE) methods have been adapted to composite sandwich structures in order to detect damage, in particular impact induced damage. Using three coupons representative of radome structures, several techniques were tested: ultrasonics, the Electromagnetic/InfraRed method (EMIR), stimulated shearography and stimulated infrared thermography. The extension of the measured damaged area was taken as a criterion, showing that stimulated shearography and ultrasound are the most sensitive methods. Moreover, two integrated Health Monitoring Systems (HMS) were tested, based on the one hand on microbending sensitive fibres and Optical Time Domain Reflectometry (OTDR), and on the other hand on Fibre Bragg Grating (FBG) sensors. The experiments demonstrated that HMS can detect damage with sensitivity comparable to that of the external NDE techniques.

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“…In particular, FBG sensors are non-conductive and not significantly affected by water, so they are suitable for use in infrastructure served in the sea, whereas traditional electrical sensors have difficulty performing in water environments for extended periods of time. In this regard, the application of this new technology will lead to a significant improvement in the accuracy of measurements [8]. However, the most common method for pile dynamic testing currently is to monitor driving with the PDA, and the method has gained wide acceptance given the clear advantages in terms of time and cost [9].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Performance Monitoring for Prestressed Concrete Piles Used in a Newly-Built High-Piled Wharf in a Harbor with Fiber Bragg Grating Sensor Technology When Pile Driving

2017

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Mechanical performance monitoring of civil infrastructure using fiber Bragg grating (FBG) sensors has received significant public attention in recent years. However, there is currently little research on the mechanical performance monitoring of piles used in high-piled wharfs in coastal ports during pile driving using the FBG sensor technique. Based on the properties of precast prestressed concrete piles used in high-piled wharfs in coastal ports and servicing seawater environments, and the benefits of FBG sensors, the mechanical performance monitoring for precast prestressed concrete piles used in a newly-built high-piled wharf in the Tianjin Port of China is devised and deployed with the FBG sensor technique. To conduct performance monitoring of the precast prestressed concrete pile, a state-of-the-art FBG strain sensor, which is less thermosensitive and does not require temperature compensation, was used to monitor the strain status of different locations of the pile. In one pile, three of this kind of strain sensor were set near the head, middle and tip of the pile, and one FBG angle sensor was set near the head of the pile to measure the dip angle of the pile. During the testing, data were recorded for all of the details of the pile driving process. According to the data analysis, it is clear that the compressive strain at the middle of the pile during driving is larger than that near the head and tip of the pile. Therefore, the middle of the prestressed concrete pile is the key location that should be preferentially monitored during pile driving. Meanwhile, when the hammer impacts the pile continuously, the obvious tension strain at the tip of the pile increases and the maximum dynamic tension strain reaches 56 µε, which approaches the tension ultimate strain. This occurs because the frictional resistance of soil is small in the middle of the pile when the tip meets the significant supporting soil layer. This study can provide a reference for the mechanical performance monitoring deployment of precast prestressed concrete piles used in high-piled wharf structures in coastal ports.

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Health monitoring of composite plastic waterworks lock gates using in-fibre Bragg grating sensors

Cited by 12 publications

References 14 publications

Lessons Learned in the Use of Fiber Optic Sensor for Civil Structural Monitoring / Erfahrungen aus der Anwendung faseroptischer Sonden für die Überwachung von Tragwerken

Lessons Learned in the Use of Fiber Optic Sensor for Civil Structural Monitoring / Erfahrungen aus der Anwendung faseroptischer Sonden für die Überwachung von Tragwerken

Comparison between Non-Destructive Evaluation Techniques and Integrated Fiber Optic Health Monitoring Systems for Composite Sandwich Structures

Mechanical Performance Monitoring for Prestressed Concrete Piles Used in a Newly-Built High-Piled Wharf in a Harbor with Fiber Bragg Grating Sensor Technology When Pile Driving

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