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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.28 No.4
- 발행연도
- 2021.10
- 수록면
- 443 - 453 (11page)
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초록· 키워드
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In this study, a corrosion threshold-controllable sensing system of long period fiber gratings (LPFG) is developed and validated for life-cycle monitoring of steel bars in corrosive environments. Three Fe-C coated LPFG sensors with two bare LPFG sensors in LP<sub>06</sub> and LP<sub>07</sub> modes for strain and temperature compensation were multiplexed and deployed inside three miniature, coaxial steel tubes to measure three (long-term in years) critical mass losses through the penetration of tube walls and their corresponding (short-term in hours) corrosion rates in the life span of steel bars. The strain/temperature and mass loss measurements are based on the changes in grating period and refractive index of surrounding medium, respectively. Thermal/mechanical loading and accelerated corrosion tests were conducted to validate the functionality, sensitivity, accuracy, and robustness of the proposed sensing system. Since both the steel tube and Fe-C layer represent the material composition of steel bars in the context of corrosion, the mass loss correlation among any two of the steel tube, Fe-C layer and steel bar is independent of the test conditions such as the current density and sample length, and thus applicable to engineering practices. The outer tube can notably delay and decelerate the corrosion process of its inner steel tube due to the reduced current effect.
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참고문헌 (26)
참고문헌 신청
Yi Bao / 2016 / High-temperature measurement with Brillouin optical time domain analysis of an annealed fused-silica single-mode fiber / Optics Letters 41(14):3177~3180
Vikram Bhatia / 1996 / Optical fibre based absolute extrinsic Fabry - Pérot interferometric sensing system / Measurement Science and Technology 7(1):58~61
Chen, Y. / 2015 / Corrosion monitoring of steel bar in mortar using Fe-C coated long-period fiber gratings / NACE - International Corrosion Conference Series
Yizheng Chen / 2016 / A Fe-C coated long-period fiber grating sensor for corrosion-induced mass loss measurement / Optics Letters 41(10):2306~2309
Lu Deng / 2007 / Applications of fiber optic sensors in civil engineering / Structural Engineering and Mechanics 25(5):577~596
Vikram Bhatia / 1996 / Optical fibre based absolute extrinsic Fabry - Pérot interferometric sensing system / Measurement Science and Technology 7(1):58~61
Chen, Y. / 2015 / Corrosion monitoring of steel bar in mortar using Fe-C coated long-period fiber gratings / NACE - International Corrosion Conference Series
Yizheng Chen / 2016 / A Fe-C coated long-period fiber grating sensor for corrosion-induced mass loss measurement / Optics Letters 41(10):2306~2309
Lu Deng / 2007 / Applications of fiber optic sensors in civil engineering / Structural Engineering and Mechanics 25(5):577~596
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