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This works because flow velocity and fluid viscosity directly translate to a shear stress and consequently to a tensile strain on the fiber optic cable. Using the technology of fiber-optic distributed
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The presented measuring system consisting of fiber-optic sensors, which are positioned in the concrete by means of a support profile, represents a
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Abstract The article describes measurements of strains of concrete, steel and textile reinforcement with distributed fiber optic sensors (DFOS).
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In this paper, we investigate modal power distribution (MPD)-based fiber optical stress measurement, and compare power-meter and CCD camera-based techniques. We also consider the
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This paper presents a thorough comparison of long-gauge fiber optic sensors and traditional measurement tools when used to monitor RC columns under small eccentric compres-sive loading.
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Strain transfer in fiber optic sensors plays critical roles in sensor survival and measurement. The mechanisms, key factors, solutions, and applications of strain transfer models are reviewed. The
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Presently, conventional geomechanical stress measuring instruments can only provide measurements at a single point. A fiber-optic (FO) based stress-sensor has the potential to make
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Optical fiber sensors can be used in cases where standard electrical measurement methods cannot be used. These may be areas with high electrical and magnetic interference or critical areas.
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This paper reports a soft fiber optic sensor based on polymer fiber Bragg gratings (PFBGs) for simultaneous measurement of shear and normal stresses. The sensor comprises two PFBGs
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As a parameter recorded by the measuring transducer, the fiber-optic sensors use the intensity of the light wave. The mechanism of changing the optical intensity can be due to reflection,
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A sensitive fiber loop ringdown (FLRD) spectrometer without any additional optical component was utilized to obtain strain measurement on a single mode fiber optic sensor.
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The developed fiber-optic attenuator-type strain sensor as part of information-measuring fiber-optic systems will allow the on-line monitoring of the deformation and deflection of the supporting
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Fiber-optic sensing (FOS) technology has emerged as a cutting-edge research focus in the sensor field due to its miniaturized structure, high sensitivity,
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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
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For using any sensor, a calibration curve and parameters are required. In the case of strain sensors, calibration is required to derive strain values from
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New findings on the elastic properties of optical fibers will help designers calibrate embedded fiber optic sensors in structural materials, such as
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The paper demonstrates the possibility of using embedded point and distributed fiber-optic sensors to register data on the mechanical state of structures made by fused deposition modeling
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For the timely detection of significant changes in the stress-strain state in the bearing elements of various building structures, which may lead to a deterioration of the technical condition of...
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In this work, the strains measured with optic fibers and recorded during tensile tests performed on carbon/epoxy composite specimens were compared to those recorded by strain gauges and by
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Fiber optic strain sensors are an innovative solution designed to measure deformation. These sensors utilize the unique properties of light traveling through
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Performance of stretching the sensor head from other off-centered positions. A sensitive fiber loop ringdown (FLRD) spectrometer without any additional optical component was utilized to
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This paper presents the results of experiments to measure the internal strains and temperatures that are generated in graphite/epoxy composite specimens during processing using embedded fiber optic
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Abstract The ability to measure strains quasi-continuously with high spatial resolution makes distributed fiber optic sensing a promising technology for structural health monitoring as it allows to locate and
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In this work, the strains measured with optic fibers and recorded during tensile tests performed on carbon/epoxy composite specimens were compared to
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Encouraging experimental results indicate that fiber-optic sensors can be a feasible tool to determine strain/stress distribution in buildings and infrastructures. Availability: Find a library where document is
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By using the fiber as a sensor, engineers can continuously monitor the entire length of the fiber, minimizing costs and providing valuable data. When
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