Design of an enhanced sensitivity FBG strain sensor and application in highway bridge engineering

Litong Li; Dongsheng Zhang; Hui Liu; Yongxing Guo; Fangdong Zhu

doi:10.1007/s13320-014-0172-5

Photonic Sensors ›› 2013, Vol. 4 ›› Issue (2) : 162 -167. DOI: 10.1007/s13320-014-0172-5

Article

Design of an enhanced sensitivity FBG strain sensor and application in highway bridge engineering

Litong Li ¹^,²^,^a
, Dongsheng Zhang ¹^,²
, Hui Liu ¹
, Yongxing Guo ¹^,²
, Fangdong Zhu ¹^,²

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Abstract

The theoretical design method of enhanced sensitivity fiber grating (FBG) strain sensors was given, and moreover high qualified strain sensors were developed and fabricated, whose sensing properties were good for practical applications. The strain sensor with cylindrical shell encapsulation contained three tubular structures, due to the uneven surface structure, in the area of the strain concentration, improving the sensitivity. It could achieve the embedment strain measurement and surface measurement and had the advantages of the easy installation. The good agreement was obtained between the measurements and theoretical simulation results. After each calibration test, twenty-four FBG strain sensors and six FBG temperature compensation sensors have been installed on the undersurface of the box girder of Diaoshuiyan bridge in Yongtaiwen highway. Finally, we built up a long-term structure health system for the highway bridge.

Keywords

Fiber Bragg grating / strain sensors / bridge engineering

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Litong Li, Dongsheng Zhang, Hui Liu, Yongxing Guo, Fangdong Zhu. Design of an enhanced sensitivity FBG strain sensor and application in highway bridge engineering. Photonic Sensors, 2013, 4(2): 162-167 DOI:10.1007/s13320-014-0172-5

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References

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[1]	Rao Y J. In-fibre Bragg grating sensors. Measurement Science and Technology, 1997, 8(4): 355-375.

[2]	Morey W W, Meltz G, Glenn W H. Fiber optic Bragg grating sensors. Proc. SPIE, 1989, 1169, 98-107.

[3]	Chung W, Kim S, Kim N. Deflection estimation of a full scale prestressed concrete girder using long-gauge fiber optic sensors. Construction and Building Materials, 2008, 22(3): 394-401.

[4]	Ling H, Lau K, Cheng L. Determination of dynamic strain profile and delamination detection of composite structures using embedded multiplexed fibre-optic sensors. Composite Structures, 2004, 66(1–4): 317-326.

[5]	Zhou Z, He J, He J, Ou J. Design method for coefficient-adjustable FBG strain sensors. Pacific Science Review, 2006, 8, 41-48.

[6]	Ren L, Jiang T, Li D. Application of small FBG strain sensors in dam model experiment. Journal of Vibration, Measurement & Diagnosis, 2013, 33(2): 277-183.

[7]	Liu Y, Guo Z, Zhang Y, Chiang K S, Dong X. Simultaneous pressure and temperature measurement with polymer coated fiber Bragg grating. Electronics Letters, 2000, 36(6): 564-566.

[8]	Scott R H, Chikermane S, Srinivasan S, Basheer P A M, Surre F, Sun T, . Commissioning and evaluation of a fiber-optic sensor system for bridge monitoring. IEEE Sensors Journal, 2013, 13(7): 2555-2562.