Polymer Optical Fiber Sensors for Distributed Strain Measurement and Application in Structural Health Monitoring

Liehr, Sascha; Lenke, Philipp; Wendt, M.; Krebber, Katerina; Seeger, Monika; Thiele, E. W.; Metschies, Heike; Gebreselassie, B.; Münich, Johannes Christian

doi:10.1109/jsen.2009.2018352

Cited by 122 publications

(84 citation statements)

References 8 publications

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“…In recent decades, structural health monitoring (SHM) with the employment of sensors has shown some success in monitoring the physical properties, such as stress and strain, of concrete structures [1,2]. However, it has been increasingly recognised that, instead of physical properties, monitoring the changes in the chemical composition of hardened cement paste in concrete is more important because this can provide an in-depth understanding on the evolution of concrete deterioration mechanisms such as chloride ingress, carbonation and sulphate attack over time, so that both the prediction of service life and the diagnosis of the causes of deterioration can be established.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of carbonated Portland cement paste with optical fibre excitation Raman spectroscopy

Yue

Wang

Basheer

et al. 2017

Construction and Building Materials

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This study demonstrates the potential of developing a future Raman spectroscopy-based sensor system for monitoring carbonation of concrete structures. A tailored optical fibre Raman system was developed under the classical 45 degree geometry with a specific optical fibre assembly acting as the laser excitation-path. This system was then employed to characterise the calcium carbonate polymorphs, i.e. calcite and/or aragonite

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Section: Introductionmentioning

confidence: 99%

Characterisation of carbonated Portland cement paste with optical fibre excitation Raman spectroscopy

Yue

Wang

Basheer

et al. 2017

Construction and Building Materials

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“…For the implementation of such sensing systems, the most important problem to be solved is the extremely low power of the Stokes light, which is associated with the Brillouin threshold power of as high as 24 W. In other words, low signal-to-noise ratio (SNR) is the major disadvantage of currently feasible Brillouin-based distributed POF sensors as compared to Rayleigh-based POF sensors [5]. As discussed in Section 3.3, one way to enhance the Brillouin signal is to employ POFs with smaller core diameters.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, despite their higher loss than that of silica glass fibers, POFs have been utilized in medium-range communication applications such as home networks and automobiles [4], and in high-strain monitoring applications [3,5] as well. On the other hand, Brillouin scattering in optical fibers [6,7], which is one of the most significant nonlinear processes, has been widely studied.…”

Section: Introductionmentioning

confidence: 99%

Brillouin Scattering in Polymer Optical Fibers: Fundamental Properties and Potential Use in Sensors

Mizuno

2011

Polymers

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Abstract:We review the fundamental properties of Brillouin scattering in a perfluorinated graded-index polymer optical fiber (PFGI-POF) with 120 m core diameter. The experiments were performed at 1.55 m telecommunication wavelength. The Brillouin frequency shift (BFS) and the Brillouin bandwidth were 2.83 GHz and 105 MHz, respectively. The Brillouin gain coefficient was calculated to be 3.09 × 10 −11 m/W, which was comparable to that of fused silica fibers. The Brillouin threshold power of the 100 m POF was estimated to be as high as 24 W, which can be, for practical applications, reduced by using POFs with smaller cores. These properties were compared with those of silica-based graded-index multi-mode fibers. We also investigated the BFS dependences on strain and temperature. They showed negative dependences with coefficients of −121.8 MHz/% and −4.09 MHz/K, respectively, which are −0.2 and −3.5 times as large as those in silica fibers. These BFS dependences indicate that the Brillouin scattering in PFGI-POFs can be potentially applied to high-accuracy temperature sensing with reduced strain sensitivity.

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“…POF has significant advantages for many sensing applications which are strained with high elasticity, not easily broken, high flexibility, high sensitivity and has negative thermo-optic coefficient [10,11]. In the last few years has done a lot of research on polymer optical fiber-based sensors which are as displacement sensor with imperfection [1], strain and temperature sensors [12,13], sensors for SHM applications [14,15]. Currently POF-based sensors have also been developed for the measurement of weight-in-motion (WIM) [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Comparison of sensitivity and resolution load sensor at various configuration polymer optical fiber

Arifin¹,

Yusran²,

Miftahuddin³

et al. 2017

AIP Conference Proceedings

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This study uses a load sensor with a macro-bending on polymer optical fiber loop model which is placed between two plates with a buffer spring. The load sensor with light intensity modulation principle is an infrared LED emits light through the polymer optical fiber then received by the phototransistor and amplifier. Output voltage from the amplifier continued to arduino sequence and displayed on the computer. Load augment on the sensor resulted in an increase of curvature on polymer optical fibers that can cause power losses gets bigger too. This matter will result in the intensity of light that received by phototransistor getting smaller, so that the output voltage that ligable on computer will be getting smaller too. The sensitivity and resolution load sensors analyzed based on configuration with various amount of loops, imperfection on the jacket, and imperfection at the cladding and core of polymer optical fiber. The results showed that the augment on the amount of load, imperfection on the jacket and imperfection on the sheath and core polymer optical fiber can improve the sensitivity and resolution of the load sensor. The best sensors resolution obtained on the number of loops 4 with imperfection 8 on the core and cladding polymer optical fiber that is 0.037 V/N and 0,026 N. The advantages of the load sensor based on polymers optical fiber are easy to make, low cost and simple to use measurement methods.

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Polymer Optical Fiber Sensors for Distributed Strain Measurement and Application in Structural Health Monitoring

Cited by 122 publications

References 8 publications

Characterisation of carbonated Portland cement paste with optical fibre excitation Raman spectroscopy

Characterisation of carbonated Portland cement paste with optical fibre excitation Raman spectroscopy

Brillouin Scattering in Polymer Optical Fibers: Fundamental Properties and Potential Use in Sensors

Comparison of sensitivity and resolution load sensor at various configuration polymer optical fiber

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