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Article
Engineering, Multidisciplinary
Qiming Shu et al.
Summary: In this study, a nonintrusive high-sensitivity sensitization structure for pipeline pressure detection is proposed based on fiber Bragg grating (FBG) sensor. The structure, which amplifies the strain of the pipeline wall, is validated to have a remarkable stability and effective transmission. It has potential application prospect for pressure monitoring of oil and gas pipelines.
Article
Engineering, Multidisciplinary
Huaibo Song et al.
Summary: The application of FBG sensing technology in tunnel construction is validated through laboratory calibration, showing the impact of tunnel excavation on soil deformation and pile disturbance. Results indicate that stress redistribution in the soil above the tunnel leads to more significant surface settlement, affecting the existing piles' displacements. This study confirms the suitability of FBG sensing technology for monitoring tunnel excavation.
Article
Engineering, Civil
Sam Cocking et al.
Summary: This paper investigates the dynamic structural response of a skewed masonry arch railway bridge through detailed monitoring, revealing a sensitivity to variables such as time of day, train speed, and temperature. This sensitivity can be localized throughout the bridge and influenced by existing damage, highlighting the importance of distinguishing additional damage from other effects.
JOURNAL OF CIVIL STRUCTURAL HEALTH MONITORING
(2021)
Article
Engineering, Electrical & Electronic
Janis Braunfelds et al.
Summary: This article focuses on the research of fiber Bragg grating (FBG) optical temperature and strain sensor applications in road structural health monitoring (SHM). Through experimental work, it was found that data collected from these sensors can be used to evaluate and predict the pavement structure's lifespan, providing guidance for future road design, use, and maintenance.
JOURNAL OF SENSORS
(2021)
Article
Optics
Yin Liu et al.
Summary: The multifunctional fiber-optic sensor proposed in this study utilizes helical-twisted-structure-assisted fiber Bragg gratings on a triangular four-core fiber to simultaneously measure directional torsion and vector bending. By subtracting the wavelength change of the central core HTSA-FBG from the wavelength change of the side core HTSA-FBGs, the influence of temperature and strain can be eliminated to improve shape accuracy. Torsion sensitivity can be adjusted by changing the pitch of the helical-twisted region.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Heng Wang et al.
Summary: The paper introduces a method for measuring soil moisture using a polymer optical fiber Bragg grating (POFBG) probe, highlighting its advantages of fast response time, small size, and remote application in fields. The sensor shows an exponential relationship between the Bragg wavelength and soil moisture content (SMC), as well as linear relationships between 8% and 24% SMC with temperature-corresponded sensitivity. Furthermore, a maximal sensitivity of 0.018 nm/% at 20℃ is achieved, and potential solutions for temperature cross sensitivity are discussed.
Article
Chemistry, Analytical
Chenyang He et al.
Summary: The optical fibre sensor developed can measure relative humidity and temperature simultaneously, with high sensitivity and low crosstalk, and a fast response time. Compared to traditional grating based optical fibre sensors, this sensor is more cost-effective and simpler to manufacture, showing great potential for widespread use in healthcare applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Review
Chemistry, Analytical
Mattia Francesco Bado et al.
Summary: This review article presents recent advancements in Structural Health Monitoring using Distributed Optical Fiber Sensors, showcasing their advanced features and deployment methodologies to contribute to the collective growth towards an efficient SHM.
Article
Engineering, Electrical & Electronic
Lin Cheng et al.
Summary: In this study, temperature detection using OFDR technology was utilized to monitor the seepage heat model in an embankment dam. The results showed that accurate temperature measurement and high spatial resolution of OFDR can reflect the temperature field characteristics in the seepage model effectively.
OPTICAL FIBER TECHNOLOGY
(2021)
Review
Construction & Building Technology
Liang Fan et al.
Summary: Monitoring corrosion in reinforced concrete is crucial for assessing structural health, with various fiber optic sensors showing advantages in different conditions. However, the gap between sensor technology innovation and engineering practices hinders further development and widespread applications. This review covers types of fiber optic sensors, their sensing principles, key features, and discusses technical challenges and future research needs to advance sensor development and promote effective applications.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Engineering, Multidisciplinary
Xing Zheng et al.
Summary: The study proposed a theoretical model for analyzing strain transfer mechanisms in surface-bonded distributed fiber-optic sensors, obtaining closed-form solutions for linear and bilinear strain distributions which were validated through laboratory testing. A simple approach was established for determining strain transfer coefficient at the turning point of bilinear strain, while parametric analyses investigated the influences of protective and adhesive layers on strain transfer efficiency. These findings shed light on the design, installation, and measurement accuracy improvement of fiber-optic sensors by accounting for substrate strain patterns.
Article
Engineering, Electrical & Electronic
Hendrik Wijaya et al.
Summary: This paper provides an overview of the distributed optical fibre sensor (DOFS) technology, focusing on its principles and applications in infrastructure health monitoring such as bridges, dams, and pipelines. It discusses the advantages, limitations, challenges, and future research directions of DOFS implementation for large infrastructure health monitoring.
OPTICAL FIBER TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Abdelfateh Kerrouche et al.
Summary: Railway switches and crossings are critical components prone to failures and malfunctions due to wear, which can lead to delays, traffic disruptions, and accidents. A new method using FBG optical fiber sensors for monitoring wear on railway frogs in S&C systems is discussed in this paper, showing promising results in both simulation and laboratory tests.
Article
Chemistry, Analytical
Fei Lu et al.
Summary: This study presents fiber optic pH sensors using silica or gold nanoparticle incorporated silica as the sensitive layers. It was found that increasing the coating thickness or incorporating gold nanoparticles can enhance the sensitivity of the sensors. However, the sensors showed poor stability in strong alkaline solutions, leading to potential corrosion issues after testing.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Multidisciplinary Sciences
Gerald K. Ekechukwu et al.
Summary: This study developed a machine learning workflow utilizing optical fiber-based sensors to estimate pressure along the fiber, demonstrated successfully on experimental datasets. The workflow combines low-frequency DAS with DTS for superior pressure prediction, achieving high accuracy in distributed pressure modeling.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Electrical & Electronic
Miklos Lenner et al.
IEEE SENSORS JOURNAL
(2020)
Article
Engineering, Electrical & Electronic
Dawid Budnicki et al.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2020)
Article
Engineering, Electrical & Electronic
Ugis Senkans et al.
JOURNAL OF SENSORS
(2019)
Article
Instruments & Instrumentation
Kivilcim Yuksel et al.
SMART MATERIALS AND STRUCTURES
(2018)
Proceedings Paper
Engineering, Geological
Thorbjorg Saevarsdottir et al.
ADVANCES IN TRANSPORTATION GEOTECHNICS III
(2016)
Article
Instruments & Instrumentation
Roberto Montanini
REVIEW OF SCIENTIFIC INSTRUMENTS
(2007)
