Fiber optic sensing (FOS) offers a promising alternative due to its scalability, durability, and high spatial resolution, making it particularly suitable for harsh environments and large-scale
A novel method is introduced by conducting a fiber optic sensor-based radial displacement. Three types of fiber optic, including 1000, 500, and $265~mu text {m}$ core diameters,
The distribution characteristics of axial and radial strain in the sensing fiber are analyzed by the finite-element method, and the influence of strain distribution on the sensitivity of
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In this article, we use numerical simulations to show that the axial and radial strains can be simultaneously measured with a single fiber in which a Bragg grating and a long period grating...
A 260-mm-long, 2-mm-diameter, substrate-free FBG shape sensor was encapsulated, and axial/radial force sensing experiments were conducted to verify the theoretical force-wavelength
An optical fiber sensing method based on a reflective grating panel is demonstrated for lateral displacement measurement. The reflective panel is a
Data recorded by the fibre optic instrumentation systems were validated using commercially available accelerometers and compared against a baseline finite element model. Both
Help students deeply understand the principle of optical fiber sensing and practical application, grasp basic skills. This experiment can be used as thematic or comprehensive experiment for related courses.
Explore fiber optic sensors: their working principles, types (intrinsic, extrinsic, hybrid), and diverse applications in mechanical, chemical, and structural health monitoring.
Based on the simulation results, a new type of sensor for axial strain, curvature, and temperature applications measurement was designed and fabricated.
Second, we integrated a bandwidth-extended fiber-optic ultrasound sensor with enhanced detection sensitivity and broad frequency response, providing simultaneous access to layered
Abstract A novel optical fiber angular displacement sensor is reported in this study. It gets the rotating angle of an object by means of the intensity modulation of a reflected light. The sensor
Optical fiber sensors offer attractive characteristics that make them very suitable and, in some cases, the only viable sensing solution. Some of the key attributes of fiber sensors are summarized below.
The alternative text for this image may have been generated using AI. Based on previous studies, we propose an optical method to suppress the RME
Radial ribs are important supporting parts of umbrella antenna, and its shape is a crucial factor affecting the overall reflector accuracy. Considering the difficulty of in-orbit shape sensing, a
In field applications, its integration with distributed fibre optic sensing (DFOS) technology enables high-resolution estimation of the groundwater flow distribution around energy piles, with estimated flow
In this paper, an all-fiber Lyot-like filter with tunable free spectral range (FSR) and selectable sensitivity is proposed and experimentally demonstrated for simultaneous sensing of axial
Radiation absorption creates electronic excited states that are trapped by localized defects for extended periods of time. Heating the material enables the trapped states to interact with phonons and decay
This study proposes a novel approach to surface strain measurement for cylindrical rock specimens subjected to uniaxial compression using distributed
For circularly symmetric structured fiber, a layered model algorithm is constructed to obtain the one-dimensional axial residual stress distribution. For non-circularly symmetric structured
The aim of this paper is to investigate the ability to measure simultaneously the axial and radial strain with a single optical fiber sensor. The discussion begins with the analytical study of a cylinder
In a fiber-optic disk accelerometer, the strain distribution of sensing fiber is crucial for the improvement of sensitivity. The distribution characteristics of axial and radial strain in the sensing
The axial distributions of the rod-surface temperature were measured using two sheathed thermocouples (outer diameter of 0.5 mm) embedded in the heater rod surface around the most
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