Jun 23, 2026
In this paper, the effects of groove shape on bolt strength were analyzed based on tensile experiments on conventional rock bolts. Following that, the stress distribution in an anchor bolt with different
Oct 28, 2025
Several monitoring systems based on OFS have been developed to measure and assess real-time data of various civil infrastructures continuously. Since its inception, Fiber Bragg
Mar 07, 2026
This paper proposes a new approach to detecting bolts'' anchoring qualities based on the fiber Bragg grating sensing principle. Moreover, it studies
Feb 18, 2026
The authors demonstrated a kilometer-scale optomechanical sensor network by integrating multiple fiber-optic optomechanical sensors into a
Aug 05, 2025
Accurate measurement of bolt force condition is essential for safe operation of industrial infrastructures. We propose a novel bolt force sensor based on fiber Bragg grating (FBG) with
Aug 15, 2025
To enable users to fabricate a force-measuring rock bolt by themselves, the microclamped FBG sensor is proposed to replace the encapsulated bare FBG sensor. A theoretical
Jul 13, 2026
Abstract In this paper, based on the research of fiber optic sensing technology, a multiparameter measuring system for hydraulic parameter monitoring is developed and evaluated.
Jun 25, 2026
Comparison of the measurements obtained by the pulse-pre-pump Brillouin optical time domain analysis and fiber Bragg grating sensing technologies indicates that when the drawing force is greater than 20
Aug 27, 2025
The typical application of fiber optic sensors in bolt looseness detection is clamping force monitoring of bolts. In these methods, the fiber Bragg
Sep 12, 2025
This paper presents a fiber optic, liquid level sensor system based on a pair of fiber Bragg gratings (FBGs), embedded in a circular silicone (PDMS—polydimethylsiloxane) rubber diaphragm.
Aug 29, 2025
Plenty of studies have referred to bolt tension monitoring using FBG sensors. A bolt tension monitoring device was proposed by Khomenko et al. , and it utilizes
Oct 11, 2025
The bolt pull-out test verified the accuracy of using the fiber Bragg grating bolt axial force characterization equation to estimate the bolt stress.
Oct 18, 2025
In this paper, a mine-used fiber Bragg grating anchor sensor technology is proposed.
Oct 06, 2025
Fiber Bragg grating (FBG) sensors have emerged as advanced tools for monitoring a wide range of physical parameters in various fields, including
Jun 11, 2026
A bolt tension monitoring device was proposed by Khomenko et al. , and it utilizes removable and reusable fiber Bragg grating sensor (s)
Apr 08, 2026
To improve the problem of the existing coal mine roadway pressure-monitoring method, whereby it is difficult to continuously monitor the axial force of the bolt over a long period of time, a
Sep 28, 2025
As an emerging monitoring technology, fiber optic rock bolts offer exceptional resistance to interference, are compact and lightweight, and can monitor the stress state of rock bolts in real time
Jan 18, 2026
Finally, optical fibers are extracted and connected with a fiber Bragg grating demodulator to realize the communication of monitoring signals. Figure 8
Jun 06, 2026
Moreover, it studies the strain transmission mechanism between the surface-bonded fiber Bragg grating and the bolt. A fiber-optic monitoring test platform of anchor bolt anchoring quality is built.
Feb 18, 2026
The entire rod axial force real-time monitoring system comprises a flameproof fiber grating signal processor, FBG force-measuring bolt, jumper,
Feb 02, 2026
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Nov 25, 2025
Abstract Optical fiber sensors are widely used in long-term monitoring in complex environments due to their advantages of anti-electromagnetic interference, high temperature resistance and corrosion
Jun 05, 2026
A force-measuring bolt and system were designed using a full rod fiber Bragg grating (FBG), based on the principle of fiber grating sensing in
Aug 22, 2025
A compact fiber Bragg grating (FBG)-based strain sensor has been developed by embedding an FBG inside a 3D-printed structure, allowing the comparison
Jul 30, 2025
A full rod fiber bragg grating (FBG) force-measuring bolt and system were designed based on the principle of fiber grating sensing, and it was found that a trapezoidal groove is a relatively
Mar 26, 2026
The force-measuring rock bolt instrumented with bare fiber Bragg grating (FBG) sensors are generally factory-fabricated. To enable users to fabricate a force-measuring rock bolt by
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