Assessment of the strain monitoring reliability of fiber Bragg grating sensor (FBGs) in advanced composite structures

Papantoniou, Agis; Rigas, Grigorios-Panagiotis; Alexopoulos, Nikolaos D.

doi:10.1016/j.compstruct.2011.03.001

Cited by 53 publications

(34 citation statements)

References 26 publications

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“…In addition, FBG sensors are able to detect in-situ and real-time strain variation in large areas without being disturbed by electromagnetic fields, and have little effect on the structural behavior of the material being studied because of their extremely small size [21][22][23][24][25]. Based on these advantages of FBG sensors, various monitoring techniques have been developed for monitoring the state of civil structures [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Thermal behavior and performance evaluation of epoxy-based polymer concretes containing silicone rubber for use as runway repair materials

Jung

Roh

Chang

2015

Composite Structures

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Section: Introductionmentioning

confidence: 99%

Thermal behavior and performance evaluation of epoxy-based polymer concretes containing silicone rubber for use as runway repair materials

Jung

Roh

Chang

2015

Composite Structures

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“…λ B is the change of Bragg wavelength .β  is the photoelastic coefficient.is the thermal expansion coefficient. ξis the thermo-optic coefficient.andT are changes in strain and temperature, respectively (Papantoniou et al 2011). (2) It is shown that the change of Bragg wavelength (λ B ) is correlated linearly with the change of strain () and the change of temperature (T).By means of temperature difference compensation, the strain of structures can be measured by FBG sensors.…”

Section: Figure 1 Principle Of Optical Fiber Bragg Gratingmentioning

confidence: 99%

Interfacial Behavior of Steel-Concrete Composite Deck by Fiber Bragg Grating Sensors

2016

Rev. Téc. Ing. Univ. Zulia

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Experiment plays an important role in studying the nonlinear behaviors of structures, especially for steel-concrete composite structures. In order to study the nonlinear behavior of steel-concrete composite deck, a series of fiber Bragg grating (FBG for shortly) sensors were designed and arranged in a full-scale model of composite deck. Cracks, slip and uplift were measured, respectively. The results show that FBG sensors performed well in the measurement of composite structure test. The arrangement of FBG sensors was much simpler than conventional electrical strain sensors. The response of FBG sensors was sensitive to the variation of structure states. The interfacial slip showed significant nonlinearity. Comparing to interfacial slip, the magnitude of uplift was small. Keywords:Fiber Bragg Grating; Steel-concrete Composite Deck; Interfacial Behavior 1.INTRODUCTIONSteel-concrete composite structure combines the steel girder with the concrete slab by shear connectors. It works as a whole and has good economical and mechanical performance (Al-deen et al., 2011). With the increase of load, slip and uplift will occur on the interface which would diminish the bearing capacity and enlarge the deformation of structures (Sakr and Sakla, 2008).It would also cause nonlinear response of composite structures (Soty and Shima, 2013). It is valuable and necessary to measure the interfacial states of composite structures in order to evaluate the structure performance (Chen and Shi, 2011).However, it still remains difficulty to measure the interfacial slip and uplift quantitatively either in practical application or in scientific research. This paper introduced fiber Bragg grating sensors, known as FBG sensors shortly, to study the nonlinear behavior ofsteel-concrete composite structures. FBG sensor is a kind of optical fiber sensor which was studied by Hill et al. (1978) firstly and introduced to civil engineering by Prohaska et al. (1993). The applications of FBG sensors in concrete structures and steel structures were reported by Chung and Kang (2008) and Rodrigues et al. (2012), respectively. The research of Kesavan et al. (2010) showed that the FBG sensor was sensitive to the variety of structural states and has much less influence to structure than the conventional strain gauges.Despite the investigations of FBG sensor in civil engineering, the application in composite structures is very rare. In the work of this paper, a series of FBG sensors were designed and arranged in a steel-concrete composite deck specimen. The composite deck was designed based on a real bridge. Concrete cracks, interfacial slip and uplift were studied. Meanwhile, additional measurement using conventional strain gauges was settled to make comparisons. Results of deflection, slip, uplift and crack are illustrated and analyzed. 2.PRINCIPLE OFOPTICAL FBGAn optical FBG is made by exposing optical fibers to an intense UV light. Periodic alterations are formed on the core of optical fibers which make the FBG only reflect particular narrowband lig...

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“…FBGs, on the other hand, are widely used in both research and commercial activities and operate by reflecting specific wavelengths. 5,6,[10][11]21 The reliable behaviour of the FBGs allowed them to act as an indicator of the performance of the evanescent sensors in this work.…”

Section: Introductionmentioning

confidence: 99%

“…5 Additionally, they can easily be embedded into composite materials without altering their mechanical performance. The most common fibre optic sensing approaches are those exploiting fibre Bragg gratings (FBGs) [10][11] or interferometers [12][13] for the measurement of physical quantities (displacements, deformations, accelerations, vibration amplitudes and frequencies). Optical fibre sensors are also emerging as the most suitable solution to detect chemicals.…”

Section: Introductionmentioning

confidence: 99%

Glass optical fibre sensors for detection of through thickness moisture diffusion in glass reinforced composites under hostile environments

Milsom

Olivero

Milanese

et al. 2015

Advances in Applied Ceramics

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A combination of evanescent wave optical sensors (EWOSs) and fibre Bragg gratings (FBGs) were embedded in an epoxy vinyl ester and an epoxy vinyl ester based glass reinforced polymer (GRP) composite to measure fluid ingress that would result in degradation under hostile conditions. Samples were subjected to accelerated aging in the form of single sided exposure to simulated sea water at 1208C in a pressurised stainless steel vessel. Low cost EWOSs were prepared from a standard multimode glass optical fibre and compared to commercially available FBGs. Both sensors were able to detect the early stage of moisture diffusion into the GRP matrix. The evanescent sensors showed a reduction in the transmitted signal intensity between 1500 and 1650 nm with an increasing exposure time due to a change in the optical properties of the polymer, whereas a peak shift was observed for the FBGs due to the swelling of the resin with the absorption of water. Additionally, the glass optical fibre sensors were embedded in a configuration that allowed the extent of diffusion through the thickness of the GRPs to be monitored, with the fibres in the closest position to the exposure face showing a greater signal change than those positioned further away.

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Assessment of the strain monitoring reliability of fiber Bragg grating sensor (FBGs) in advanced composite structures

Cited by 53 publications

References 26 publications

Thermal behavior and performance evaluation of epoxy-based polymer concretes containing silicone rubber for use as runway repair materials

Thermal behavior and performance evaluation of epoxy-based polymer concretes containing silicone rubber for use as runway repair materials

Interfacial Behavior of Steel-Concrete Composite Deck by Fiber Bragg Grating Sensors

Glass optical fibre sensors for detection of through thickness moisture diffusion in glass reinforced composites under hostile environments

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