High resolution monitoring of strain fields in concrete during hydraulic fracturing processes
Abstract
Here, we present a distributed fiber optic sensing scheme to image 3D strain fields inside concrete blocks during laboratory-scale hydraulic fracturing. Strain fields were measured by optical fibers embedded during casting of the concrete blocks. The axial strain profile along the optical fiber was interrogated by the in-fiber Rayleigh backscattering with 1-cm spatial resolution using optical frequency domain reflectometry (OFDR). The 3D strain fields inside the cubes under various driving pressures and pumping schedules were measured and used to characterize the location, shape, and growth rate of the hydraulic fractures. The fiber optic sensor detection method presented in this paper provides scientists and engineers an unique laboratory tool to understand the hydraulic fracturing processes via internal, 3D strain measurements with the potential to ascertain mechanisms related to crack growth and its associated damage of the surrounding material as well as poromechanically-coupled mechanisms driven by fluid diffusion from the crack into the permeable matrix of concrete specimens.
- Authors:
-
- Univ. of Pittsburgh, Pittsburgh, PA (United States)
- Corning Inc., New York, NY (United States)
- Publication Date:
- Research Org.:
- Univ. of Pittsburgh, PA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1253358
- Grant/Contract Number:
- FE0003859
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Optics Express
- Additional Journal Information:
- Journal Volume: 24; Journal Issue: 4; Journal ID: ISSN 1094-4087
- Publisher:
- Optical Society of America (OSA)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; fiber optics sensors; pressure measurement; scattering Rayleigh
Citation Formats
Chen, Rongzhang, Zaghloul, Mohamed A. S., Yan, Aidong, Li, Shuo, Lu, Guanyi, Ames, Brandon C., Zolfaghari, Navid, Bunger, Andrew P., Li, Ming -Jun, and Chen, Kevin P. High resolution monitoring of strain fields in concrete during hydraulic fracturing processes. United States: N. p., 2016.
Web. doi:10.1364/OE.24.003894.
Chen, Rongzhang, Zaghloul, Mohamed A. S., Yan, Aidong, Li, Shuo, Lu, Guanyi, Ames, Brandon C., Zolfaghari, Navid, Bunger, Andrew P., Li, Ming -Jun, & Chen, Kevin P. High resolution monitoring of strain fields in concrete during hydraulic fracturing processes. United States. https://doi.org/10.1364/OE.24.003894
Chen, Rongzhang, Zaghloul, Mohamed A. S., Yan, Aidong, Li, Shuo, Lu, Guanyi, Ames, Brandon C., Zolfaghari, Navid, Bunger, Andrew P., Li, Ming -Jun, and Chen, Kevin P. Wed .
"High resolution monitoring of strain fields in concrete during hydraulic fracturing processes". United States. https://doi.org/10.1364/OE.24.003894. https://www.osti.gov/servlets/purl/1253358.
@article{osti_1253358,
title = {High resolution monitoring of strain fields in concrete during hydraulic fracturing processes},
author = {Chen, Rongzhang and Zaghloul, Mohamed A. S. and Yan, Aidong and Li, Shuo and Lu, Guanyi and Ames, Brandon C. and Zolfaghari, Navid and Bunger, Andrew P. and Li, Ming -Jun and Chen, Kevin P.},
abstractNote = {Here, we present a distributed fiber optic sensing scheme to image 3D strain fields inside concrete blocks during laboratory-scale hydraulic fracturing. Strain fields were measured by optical fibers embedded during casting of the concrete blocks. The axial strain profile along the optical fiber was interrogated by the in-fiber Rayleigh backscattering with 1-cm spatial resolution using optical frequency domain reflectometry (OFDR). The 3D strain fields inside the cubes under various driving pressures and pumping schedules were measured and used to characterize the location, shape, and growth rate of the hydraulic fractures. The fiber optic sensor detection method presented in this paper provides scientists and engineers an unique laboratory tool to understand the hydraulic fracturing processes via internal, 3D strain measurements with the potential to ascertain mechanisms related to crack growth and its associated damage of the surrounding material as well as poromechanically-coupled mechanisms driven by fluid diffusion from the crack into the permeable matrix of concrete specimens.},
doi = {10.1364/OE.24.003894},
journal = {Optics Express},
number = 4,
volume = 24,
place = {United States},
year = {Wed Feb 17 00:00:00 EST 2016},
month = {Wed Feb 17 00:00:00 EST 2016}
}
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Works referencing / citing this record:
A Uniform Strain Transfer Scheme for Accurate Distributed Optical Fiber Strain Measurements in Civil Structures
journal, May 2018
- Du, Yang; Chen, Yizheng; Zhuang, Yiyang
- Inventions, Vol. 3, Issue 2