&lt;title&gt;Fiber optic Bragg grating strain sensor in large-scale concrete structures&lt;/title&gt;

Prohaska, J. D.; Snitzer, E.; Chen, Benxian; Maher, M. H.; Nawy, Edward G.; Morey, W. W.

doi:10.1117/12.141330

Cited by 36 publications

(14 citation statements)

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“…Early work examined the response of gratings embedded in concrete beams [132]. One of the first full field trails of the technology was the use of a four grating sensor system embedded into a concrete bridge in Calgary, Canada by the University of Toronto group [133].…”

Section: Applicationsmentioning

confidence: 99%

A Review of Recent Developments in Fiber Optic Sensor Technology

Kersey

1996

Optical Fiber Technology

400

214

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Section: Applicationsmentioning

confidence: 99%

A Review of Recent Developments in Fiber Optic Sensor Technology

Kersey

1996

Optical Fiber Technology

400

214

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“…According to the model given by Ou and Zhou [ 16 ], the strain transfer performance of the interface between the fiber and PP as shown in Figure 3 can also be expressed by the following equation:

where λ —strain transfer eigenvalue, E c —modulus of OFBG, r c —radius of OFBG, G pp —shear modulus of the matrix, r pp —radius of the matrix.…”

Section: Fabrication Of the Pp Based Ofbg Strain Sensor (Processing Tmentioning

confidence: 99%

Research on a Novel Low Modulus OFBG Strain Sensor for Pavement Monitoring

Wang

2012

Sensors

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Because of the fatigue and deflection damage of asphalt pavement, it is very important for researchers to monitor the strain response of asphalt layers in service under vehicle loads, so in this paper a novel polypropylene based OFBG (Optical Fiber Bragg Gratings) strain sensor with low modulus and large strain sensing scale was designed and fabricated. PP with MA-G-PP is used to package OFBG. The fabrication techniques, the physical properties and the sensing properties were tested. The experimental results show that this kind of new OFBG strain sensor is a wonderful sensor with low modulus (about 1 GPa) and good sensitivity, which would meet the needs for monitoring some low modulus materials or structures.

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“…In 1989, Mendez et al first proposed the introduction of optical fiber sensors into the field of geotechnical engineering for the health detection of concrete structure [12]. In 1992, Prohaska et al first embedded fiber Bragg gratings into concrete structure to measure strain and introduced fiber grating sensing technology, which was originally used in the aerospace and aerospace fields into civil engineering [13]. In 1997, Meissner et al buried Bragg gratings in a prestressed concrete bridge on the A4 highway near Dresden [14].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Overburden Deformation Evolution under Mining Effect Based on Fiber Bragg Grating Sensing Technology

et al. 2020

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In order to study the regularity of overburden deformation and mining pressure changes in the stope. Take the geological conditions of Hanglaiwan coal mine in Yushen mining area as the background, a 3000 mm×1340 mm×200 mm physical similar material model was established in laboratory. Eight fiber Bragg grating sensors were embedded in the model, used to monitor the movement and deformation of the overburden key stratum and the change of mining abutment pressure in real time and then to determine the influencing factors and strain transfer coefficients of the fiber grating through theoretical analysis and calibration experiments. The results show the following. (1) The changes in value, position, and shape of the strain can reflect the dynamic evolution process of bending deformation, breaking, and rotation of the key strata. When the key layer breaks for the first time, the strain curve shows a peak shape; when the key layer breaks periodically, the strain curve of the fiber grating sensor showed a plateau shape for a period of time. (2) The strain curve has a good corresponding relationship with the change in supporting pressure. When the strain curve of the fiber Bragg grating sensor was at the trough stage, the abutment pressure was at the peak stage, with the increase of sensor buried height, and the supporting pressure and the strain value had a linear relationship within the range of the advanced abutment pressure. The conclusion shows that the fiber Bragg grating sensor monitoring technology has good effect on the internal strain and key supporting pressure monitoring of the overburden in the model test; it provides new monitoring methods and means for the model tests.

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<title>Fiber optic Bragg grating strain sensor in large-scale concrete structures</title>

Cited by 36 publications

References 0 publications

A Review of Recent Developments in Fiber Optic Sensor Technology

A Review of Recent Developments in Fiber Optic Sensor Technology

Research on a Novel Low Modulus OFBG Strain Sensor for Pavement Monitoring

Experimental Study on Overburden Deformation Evolution under Mining Effect Based on Fiber Bragg Grating Sensing Technology

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