Jacket effect on strain measurement accuracy for distributed strain sensors based on Brillouin scattering

• Autorzy: Ding Y. , Shi B. , Bao X. , Gao J.
• Języki publikacji: EN

Abstrakty

EN

Fiber jacket has a function of protecting fibers from harsh environment; it also has an impact on the measured strain accuracy. In this paper, we report on our study of jacket effect to distributed Brillouin sensor system on strain measurement accuracy for constant load stretching and constant length stretching using the 900 m tight-buffered fiber (Type-A) and the 250 m optical fiber (Type-B). We have studied the time-varying performance under the stretching of constant load and length. It was found that, within 48 hours under constant load stretching, the strain value of the Type-A measured by BOTDR (Brillouin optical time-domain reflectometer) increased with time, while the Type-B it kept stable. Within 48 hours under constant length stretching, the strain value of the Type-A decreased with time, while the Type-B it kept stable. After relaxation, the strain value of the Type-B reached zero within 1 hour, while the Type-A declined gradually. We found the creep deformation and stress relaxation of jacket to be the leading cause to this phenomena.

Słowa kluczowe

EN

fiber optics sensors; Brillouin scattering; strain monitoring; jacket effect

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2006
• Tom: Vol. 36, nr 1
• Strony: 57--67
• Opis fizyczny: Bibliogr. 14 poz.,

Twórcy

autor

Ding Y.

autor

Shi B.

autor

Bao X.

autor

Gao J.

• Department of Civil Engineering, 210094 Nanjing, China

Bibliografia

• [1] OHNO H., NARUSE H., KIHARA M., SHIMADA A., Industrial applications of the BOTDR optical fiber strain sensor, Optical Fiber Technology: Materials, Devices and Systems 7(1), 2001, pp. 45–64.
• [2] SHI B., XU H.Z., ZHANG D., et al., A study on BOTDR application in monitoring deformation of a tunnel, [In] Proceedings of Structural Health Monitoring and Intelligent Infrastructure, Z.S. Wu, M. Abe [Eds.], A.A. Balkema Publishers, Tokyo, Japan 2003, pp. 1025–30.
• [3] OHNO H., NARUSE H., KURASHIMA T., NOBIKI A., UCHIYAMA Y., KUSAKABE Y., Application of Brillouin scattering-based distributed optical fiber strain sensor to actual concrete piles, IEICE Transactions on Electronics E85-C(4), 2002, pp. 945–51.
• [4] DING Y., SHI B., CUI H.L., et al., The stability of optical fiber as strain sensor under invariable stress, [In] Proceedings of Structural Health Monitoring and Intelligent Infrastructure, Z.S. Wu, M. Abe [Eds.], A.A. Balkema Publishers, Tokyo, Japan 2003, pp. 267–70.
• [5] BAO X.Y., DEMERCHANT M., BROWN A., BREMNER T., Tensile and compressive strain measurement in the lab and field with the distributed Brillouin scattering sensor, Journal of Lightwave Technology 19(11), 2001, pp. 1698–704.
• [6] HORIGUCHI T., KURASHIMA T., TATEDA M., Tensile strain dependence of Brillouin frequency shift in silica optical fibers, IEEE Photonics Technology Letters 1(5), 1989, pp. 107–8.
• [7] OHSAKI M., TATEDA M., OMATSU T., OHNO H., Spatial resolution enhancement of distributed strain measurement using BOTDR by partially gluing optical fiber, IEICE Transactions on Communications E85-B(8), 2002, pp. 1636–9.
• [8] WU Z.S., TAKAHASHI T., KINO H., HIRAMATSU K., Crack measurement of concrete structures with optic fiber sensing, in Proceedings of the Japan Concrete Institute 409-414(2000).
• [9] WU Z.S., TAKAHASHI T., SUDO K., An experimental investigation on continuous strain and crack monitoring with optical fibers, Concrete Research and Technology 12(2), 2002, pp. 139–48.
• [10] COX H.L., The elasticity and strength of paper and other fibrous materials, British Journal of Applied Physics 3(3), 1952, pp. 72–9.
• [11] YUAN L.B., ZHOU L.M., WU J.S., Investigation of a coated optical fiber strain sensor embedded in a linear strain matrix material, Optics and Lasers in Engineering 35(4), 2001, pp. 251–60.
• [12] NAGAI Y., OGAWA T., ZHEN L.Y., NISHIMOTO Y., OHISHI F., Analysis of weathering of thermoplastic polyester elastomers, Polymer Degradation and Stability 56(1), 1997, pp. 115–21.
• [13] GAO J.G., LI X.Y., Macromolecular material, Chemistry Industry Press, China 2002.
• [14] SHIUE S.T., Tensile-force-induced delamination of polymeric coatings in tightly jacketed double-coated optical fibers, Materials Chemistry and Physics 56(1), 1998, pp. 91–5.