12 May 2016 Imaging 3D strain field monitoring during hydraulic fracturing processes
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Abstract
In this paper, we present a distributed fiber optic sensing scheme to study 3D strain fields inside concrete cubes during hydraulic fracturing process. Optical fibers embedded in concrete were used to monitor 3D strain field build-up with external hydraulic pressures. High spatial resolution strain fields were interrogated by the in-fiber Rayleigh backscattering with 1-cm spatial resolution using optical frequency domain reflectometry. The fiber optics sensor scheme presented in this paper provides scientists and engineers a unique laboratory tool to understand the hydraulic fracturing processes in various rock formations and its impacts to environments.
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Rongzhang Chen, Mohamed A. S. Zaghloul, Aidong Yan, Shuo Li, Guanyi Lu, Brandon C. Ames, Navid Zolfaghari, Andrew P. Bunger, Ming-Jun Li, Kevin P. Chen, "Imaging 3D strain field monitoring during hydraulic fracturing processes", Proc. SPIE 9852, Fiber Optic Sensors and Applications XIII, 98520W (12 May 2016); doi: 10.1117/12.2227646; https://doi.org/10.1117/12.2227646
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