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A platform for research: civil engineering, architecture and urbanism
Strain transfer effect in distributed fiber optic sensors under an arbitrary field
Abstract Optical fibers with protective coatings have been used as distributed strain sensors for automated inspection in the construction, operation, and maintenance of various engineering structures. The presence of the protective coatings causes strain transfer effect, which can change the strain measurement of the distributed sensors. This study quantitatively evaluates the strain transfer for distributed fiber optic sensors subjected to an arbitrary strain field for the first time. Theoretical studies are performed to derive closed-form solutions for describing the strain transfer, and high-resolution (sub-millimeter) strain distributions were measured to validate the theoretical study. This study demonstrates that the strain transfer effect is dependent on the strain field in the host matrix, and the derived formulae enable correct interpretation of the strain measurement from the distributed sensor. This study provides theoretical foundations for using distributed fiber optic sensors to accurately measure strain distributions in engineering structures.
Graphical abstract Display Omitted
Highlights The strain transfer in an optical fiber under an arbitrary strain field of host matrix is studied. It is the first time to discover that the strain transfer ratio in distributed sensor can exceed 1. The proposed method is validated using high-resolution measurement of strain distributions. The study provides theoretical foundation for using distributed fiber optic strain sensors.
Strain transfer effect in distributed fiber optic sensors under an arbitrary field
Abstract Optical fibers with protective coatings have been used as distributed strain sensors for automated inspection in the construction, operation, and maintenance of various engineering structures. The presence of the protective coatings causes strain transfer effect, which can change the strain measurement of the distributed sensors. This study quantitatively evaluates the strain transfer for distributed fiber optic sensors subjected to an arbitrary strain field for the first time. Theoretical studies are performed to derive closed-form solutions for describing the strain transfer, and high-resolution (sub-millimeter) strain distributions were measured to validate the theoretical study. This study demonstrates that the strain transfer effect is dependent on the strain field in the host matrix, and the derived formulae enable correct interpretation of the strain measurement from the distributed sensor. This study provides theoretical foundations for using distributed fiber optic sensors to accurately measure strain distributions in engineering structures.
Graphical abstract Display Omitted
Highlights The strain transfer in an optical fiber under an arbitrary strain field of host matrix is studied. It is the first time to discover that the strain transfer ratio in distributed sensor can exceed 1. The proposed method is validated using high-resolution measurement of strain distributions. The study provides theoretical foundation for using distributed fiber optic strain sensors.
Strain transfer effect in distributed fiber optic sensors under an arbitrary field
Tan, Xiao (author) / Bao, Yi (author) / Zhang, Qinghua (author) / Nassif, Hani (author) / Chen, Genda (author)
2021-01-22
Article (Journal)
Electronic Resource
English
Arbitrary strain transfer from a host to an embedded fiber-optic sensor
| British Library Online Contents | 2000
ANALYSIS ON STRAIN TRANSFER OF FIBER OPTIC FABRY-PEROT SENSORS
| British Library Conference Proceedings | 2007