Abstract
A detecting method of investigating the function of crack width versus fiber Bragg grating (FBG) spectrum deformation was proposed. In this paper, the bond-slip model of deformed steel bar in concrete slab was used to calculate the crack width. The stress distributions along optic-fiber grating were extracted by the three-dimensional (3D) finite element method (FEM) and the spectrum deformation of FBG induced by the uneven distribution of the stress was calculated. Experiments were carried out with an FBG fixed on the bottom of concrete slab. The crack width and FBG spectrum deformation of experimental results were given, and the function of crack width versus wavelength shift of FBG sensor was given also. The proposed technology in this paper could improve the safety of large-scale concrete building by early identification of structural crack.
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References
KAKLAUSKAS G, SOKOLOV A, RAMANAUSKAS R, et al. Reinforcement strains in reinforced concrete tensile members recorded by strain gauges and FBG sensors: experimental and numerical analysis[J]. Sensors (Basel), 2019, 19(1): 200.
LIU Y G, YANG D Q, WANG Y X, et al. Fabrication of dual-parameter fiber-optic sensor by cascading FBG with FPI for simultaneous measurement of temperature and gas pressure[J]. Optics communications, 2019, 443: 166–171.
DATTA A, BABU A M, SAHA A. Enhanced sensitivity of fiber optic evanescent wave absorption-based concentration sensor by shining a Bessel-Gauss beam and effect of fiber bending on the sensor response: a theoretical analysis[J]. Optical engineering, 2019, 58(5): 1–12.
OKABE Y, YASHIRO S, KOSAKA T, et al. Detection of transverse cracks in CFRP composites using embedded fiber Bragg grating sensors[J]. Smart material structure, 2000, 9(6): 832–838.
OKABE Y, TSUJI R, TAKEDA N. Application of chirped fiber Bragg grating sensors for identification of crack locations in composites[J]. Composites part A-applied science and manufacturing, 2004, 35(1): 59–65.
TAKEDA S, OKABE Y, TAKEDA N. Delamination detection in CFRP laminates with embedded small-diameter fiber Bragg grating sensors[J]. Composites part A-applied science and manufacturing, 2002, 33(7): 971–980.
KESAVAN K, RAVISANKAR K, PARIVALLAL S, et al. Experimental studies on fiber optic sensors embedded in concrete[J]. Measurement, 2010, 43(2): 157–163.
RODRIGUES C, FÉLIX C, LAGE A, et al. Development of a long-term monitoring system based on FBG sensors applied to concrete bridges[J]. Engineering structure, 2010, 32(8): 1993–2002.
SU H Z, LI X, FANG B, et al. Crack detection in hydraulic concrete structures using bending loss data of optical fiber[J]. Journal of intelligent material systems and structures, 2017, 28(13): 1719–1733.
DAWOOD N, MARZOUK H. Crack spacing and width of thick high strength reinforced concrete panels[J]. Advances in structural engineering, 2013, 16(2): 273–285.
SOLTANI A, HARRIES K A, SHAHROOZ B M. Crack opening behavior of concrete reinforced with high strength reinforcing steel[J]. International journal of concrete structures and materials, 2013, 7(4): 253.
WANG L L, HAO J G, SAI Y Z. Crack opening estimate of reinforced concrete using optical fiber sensor[C]//2020 IEEE 5th Optoelectronics Global Conference, September 7–11, 2020, Shenzhen, China. New York: IEEE, 2020: 137–139.
GAFSI R, EL-SHERIF M A. Analysis of induced birefringence effects on fiber Bragg gratings[J]. Optical fiber technology, 2000, 6(3): 299–323.
WANG L L, XIN X J, SONG J, et al. Finite element analysis-based study of fiber Bragg grating sensor for cracks detection in reinforced concrete[J]. Optical engineering, 2018, 57(2): 1–6.
ERDOGAN T. Fiber grating spectra[J]. Journal of lightwave technology, 1997, 15(8): 1277–1294.
WANG L L, SONG J, SAI Y Z, et al. Crack width analysis of reinforced concrete using FBG sensor[J]. IEEE photonics journal, 2019, 11(1): 1–8.
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The authors declare that there are no conflicts of interest related to this article.
This work has been supported by the National Natural Science Foundation of China (No.61705098), the National Natural Science Foundation of Shandong Province (Nos.ZR2017BF042 and ZR2019MF010), and the Project of Shandong Province Higher Educational Science and Technology Program (No.J17KA050).
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Wang, L., Li, J., Hao, J. et al. Crack width estimate in reinforced concrete with FBG sensor: experimental and numerical analysis. Optoelectron. Lett. 18, 43–47 (2022). https://doi.org/10.1007/s11801-022-1027-8
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DOI: https://doi.org/10.1007/s11801-022-1027-8