The effect of stress level and localized corrosion on the strain transfer efficiency between corroded steel rebars and distributed fiber optic sensors (DFOSs) is experimentally investigated in
In this paper, an optical fiber stress sensing system is designed, and a new stress demodulation model is proposed. The feasibility of realizing large
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The fiber optic sensors (FOSs) are commonly used for large-scale structure monitoring systems for their small size, noise free and low electrical risk characteristics. Embedded fiber optic
This paper presents the application of distributed fiber optical sensing for monitoring temperature, strain and stress histories on real structures under construction site conditions.
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Abstract A method to determine process-induced residual stress in fiber-reinforced composite materials using strain measurements from embedded fiber optic sensors is presented. This method allows non
This paper investigates the stress field distribution characteristics in the three-core optical fiber. Utilizing Fourier transform analysis of the str
In the 0–80 N applied stress loading experiments of the sensing fiber, the stress variation is linearly related to the frequency shift of the BFS. The system sensitivity increased with increasing
Fiber-optic sensing (FOS) technology has emerged as a cutting-edge research focus in the sensor field due to its miniaturized structure, high
In this paper, we present the simultaneous monitoring of the fabrication strain and temperature during the composite cure process by using
The influence of the deflection on the fiber optical response is directly related to the stresses and length variation analysis considering that both are physically related.
This paper conducts a systematic analysis of the sensing mechanisms in fiber-optic pressure sensors, with a particular focus on the performance optimization effects of fiber structures
The importance of the photoelastic effect in controlling polarization in optical fibers is discussed. Measurements of the stress-optic coefficient, its dispersion, and temperature dependence are
The experimental results showed that the fiber optic distributed sensor holds high accuracy, and the relative deviation of the measurement results between fiber optic sensor and strain
In this paper, an ultra-sensitive optical lateral stress sensor with the Optical Vernier effect (OVE) is successfully fabricated, and its feasibility is also experimentally demonstrated.
A design-structural diagram of a fiber-optic micro-displacement measuring transducer and a block diagram and the design of a new sensor are presented.
For a surface bonded optical fiber sensor, the measuring sensitivity is strongly dependent on the bonding characteristics which include the protective coating, adhesive layer and the bonding
In this paper, we propose a surface-mounted, fiber optic conjugate stress sensor (FOCSS) for tracking microscale changes through measurement of the host’s instantaneous
This sensor is based on the mode coupling between two optical fibers. It uses standard multimode optical fibers, fused along a fixed clad length parallel to the fiber axis. The sensor is
Abstract The article describes measurements of strains of concrete, steel and textile reinforcement with distributed fiber optic sensors (DFOS).
Discover the potential of stress optical fiber sensors in measuring force/stress on mechanical structures. Explore our proposed designs and optimized materials for sensor support. Validate our approach
This paper presents a fiber-optic parallel Fabry-Perot interferometer (FPI) sensor based on a mismatched structure and vernier effect, which can simultaneously measure strain and
Abstract: Fiber-optic sensing of temperature and strain over many advantages over electronic sensors. Fiber-Bragg-Gratings (FBGs) are used for spot sensing, whereas Rayleigh, Brillouin and Raman
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