Comparative Analysis of Deformation Determination by Applying Fiber-optic 2D Deflection Sensors and Geodetic Measurements

Markovic, Marko; Bajić, Jovan S.; Batilović, Mehmed; Sušić, Zoran; Joža, Ana; Stojanović, Goran M.

doi:10.3390/s19040844

Cited by 14 publications

(12 citation statements)

References 26 publications

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“…In the last few decades the use of optical fiber sensors (OFS) to monitor physical parameters of structures in the civil engineering field has been widely employed. For instance, the application of OFS to monitor properties such as the curvature and deflection of bridges [ 36 , 37 , 38 , 39 ], the onset of cracking [ 40 , 41 , 42 ], and temperature [ 43 , 44 ] has been consistently reported. Nevertheless, besides physical properties, other parameters such as pH level [ 45 , 46 ], relative humidity [ 47 , 48 , 49 ], chloride content [ 50 , 51 , 52 ], and alkali-silica reactions (ASR) [ 53 ] are also responsible for earlier failure of civil engineering structures.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Optical and Electrical Characterization of Amino-alcohol Based Sol-gel Hybrid Materials

et al. 2020

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This manuscript describes the synthesis and characterization of five new organic–inorganic hybrid (OIH) sol-gel materials that were obtained from a functionalized siloxane 3-glycidoxypropyltrimethoxysilane (GPTMS) by the reaction with the new Jeffamine®, namely three different diamines, i.e., EDR-148, RFD-270, and THF-170, a secondary diamine, i.e., SD-2001, and a triamine, i.e., T-403. The OIH sol-gel materials were characterized by UV-visible absorption spectrophotometry, steady-state photoluminescence spectroscopy, and electrochemical impedance spectroscopy. The reported OIH sol-gel materials showed that, with the exception of the samples prepared with Jeffamine® SD-2001, the transmittance values ranged between 61% and 79%. Regarding the capacitance data, the values reported changed between 0.008 and 0.013 nF cm−2. Due to their optical and electrical properties these new OIH materials show promising properties for applications as support films in an optical sensor area such as fiber sensor devices. Studies to assess the chemical stability of the OIH materials in contact with cement pastes after 7, 14, and 28 days were also performed. The samples prepared with THF–170 and GPTMS, when compared to the samples prepared with RFD-270 and T-403, exhibited improved behavior in the cement paste (alkaline environment), showing promising properties for application as support film in optical fiber sensors in the civil engineering field.

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Section: Introductionmentioning

confidence: 99%

Synthesis, Optical and Electrical Characterization of Amino-alcohol Based Sol-gel Hybrid Materials

et al. 2020

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“…According to the CECS 22:2005 Technical Specification for Geotechnical Anchor Rods (Ropes) of China [21] and the GB 50086-2015 Technical Specification for Geotechnical Anchor Rods and Shotcrete Support Engineering of China [22], the field pullout test of the antifloating anchor rod was carried out in the single-cycle tension test according the field test conditions. The design value of axial bearing capacity is 250kN.…”

Section: Field Test Processmentioning

confidence: 99%

Field Test Study on Deformation Monitoring of Antifloating Anchor Using Optic Fiber Sensor

et al. 2022

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The antifloating anchors have been widely used in the antifloating problem of underground engineering recently. Due to the complexity of the anchor force in the geotechnical material and the limitations of traditional monitoring methods, it is impossible to grasp the deformation characteristics of the anchor comprehensively. The pullout test of the antifloating anchor on-site is carried out in this paper based on the housing construction project. The Optical Frequency Domain Reflectometry (OFDR) technology is used, the strain distributions are obtained, and the distribution law of axial force is analyzed. The test results show that the strain of the antifloating anchor gradually decreases when anchoring depth increases and eventually tends to zero. The anchoring section is divided into main stressed section and unstressed section. The results show that the OFDR technology can be used to effectively monitor the antifloating anchor in the pullout test; it will help to grasp the deformation of antifloating anchor.

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“…Paper [14] proposes a deflection sensor based on the bending loss of machined plastic optical fibre. The sensor is intended for application in structural health monitoring of civil and geotechnical infrastructures.…”

Section: Contributionsmentioning

confidence: 99%

Special Issue “Fibre Optic Sensors for Structural and Geotechnical Monitoring”

Caponero

2020

Sensors

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In this editorial on the special issue “Fibre Optic Sensors for Structural and Geotechnical Monitoring” a review of the contribution papers selected for publication is given. Each paper is briefly summarized, presenting its objective and methods, then a comment is given about the relevance of the work with respect to the advance and the spreading of the fibre optic technology for monitoring applications.

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Comparative Analysis of Deformation Determination by Applying Fiber-optic 2D Deflection Sensors and Geodetic Measurements

Cited by 14 publications

References 26 publications

Synthesis, Optical and Electrical Characterization of Amino-alcohol Based Sol-gel Hybrid Materials

Synthesis, Optical and Electrical Characterization of Amino-alcohol Based Sol-gel Hybrid Materials

Field Test Study on Deformation Monitoring of Antifloating Anchor Using Optic Fiber Sensor

Special Issue “Fibre Optic Sensors for Structural and Geotechnical Monitoring”

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