In-Situ High Temperature and Large Strain Monitoring During a Copper Casting Process Based on Regenerated Fiber Bragg Grating Sensors

Bian, Qiang; Bauer, Constantin; Stadler, Andrea; Lindner, Markus; Jakobi, Martin; Volk, Wolfram; Koch, Alexander W.; Roths, Johannes

doi:10.1109/jlt.2021.3101524

Cited by 26 publications

(8 citation statements)

References 42 publications

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“…The proposed sensor was compared to the already reported sensor and was shown in table 1. The sensor designed for this work can monitor multiple parameters and the sensitivity is significantly improved in contrast to the proposed sensors in [1][2][3][4][5][6]. Although the proposed sensor in [7][8][9] can realize multi-parameter measurement, the sensor designed in this work has higher sensitivity, and the structural design of the sensor is simpler.…”

Section: Resultsmentioning

confidence: 99%

“…monitoring in the metallurgy, welding, and chemical industries. High accuracy and sensitivity to temperature and strain measurements are very important [3][4][5][6]. Optical fiber transmission has many advantages such as large bandwidth, the low loss in transmission, and no electromagnetic interference and radiation interference in the transmitted signal [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Paralleled Sagnac interferometer and Mach–Zehnder interferometer for enhanced measurements sensitivity based on Vernier effect

Shi,

Chen,

et al. 2024

J. Phys. D: Appl. Phys.

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In this paper, Vernier effect (VE) was experimentally excited through paralleling Sagnac interferometer (SI) and Mach-Zehnder interferometer (MZI). SI was fabricated by a 38 cm long panda-shaped polarization maintaining fiber (PMF) in the Sagnac loop, while MZI was made through pulling single mode fiber (SMF) into a tapered type fiber. The strain and temperature sensitivities of the paralleled SI and MZI were 51.97 pm/με and 2.94 nm/℃ respectively, which were increased approximately 3 times than an individual SI whose measurement sensitivities of strain and temperature were 18.24 pm/με and 0.98 nm/℃ correspondingly. The theoretical analysis of the single interference and paralleled interferences were verified by the experimental results. The proposed sensor shows simple in fabrication, high sensitivity, and good hysteresis, is a strong competitor in monitoring the strain and temperature.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Paralleled Sagnac interferometer and Mach–Zehnder interferometer for enhanced measurements sensitivity based on Vernier effect

Shi,

Chen,

et al. 2024

J. Phys. D: Appl. Phys.

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“…Therefore, it is necessary to encapsulate the sensors to enhance their adaptability and robustness. The encapsulation technique for fiber high-temperature sensors in this section can be classified into three kinds: tubular encapsulation [97][98][99][100][101][102] , substrate encapsulation [103][104][105][106] , and metalembedded encapsulation [107][108][109][110][111][112] .…”

Section: Fiber High-temperature Sensor Encapsulation Techniquementioning

confidence: 99%

Recent advances in optical fiber high-temperature sensors and encapsulation technique [Invited]

å¾�,

å�ž,

æ¢�

et al. 2023

Chin. Opt. Lett.

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In the aerospace field, for aerospace engines and other high-end manufacturing equipment working in extreme environments, like ultrahigh temperatures, high pressure, and high-speed airflow, in situ temperature measurement is of great importance for improving the structure design and achieving the health monitoring and the fault diagnosis of critical parts. Optical fiber sensors have the advantages of small size, easy design, corrosion resistance, anti-electromagnetic interference, and the ability to achieve distributed or quasi-distributed sensing and have broad application prospects for temperature sensing in extreme environments. In this review, first, we introduce the current research status of fiber Bragg grating-type and Fabry-Perot interferometer-type high-temperature sensors. Then we review the optical fiber hightemperature sensor encapsulation techniques, including tubular encapsulation, substrate encapsulation, and metalembedded encapsulation, and discuss the extreme environmental adaptability of different encapsulation structures. Finally, the critical technological issues that need to be solved for the application of optical fiber sensors in extreme environments are discussed.

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“…Fiber Bragg gratings (FBGs) have been widely used as temperature sensors in marine applications, aerospace applications, as well as in other fields [1][2][3] . Compared with conventional temperature gauges, FBG temperature sensors have similar sensitivity but are much lighter in weight and require simpler wiring.…”

Section: Introductionmentioning

confidence: 99%

Fiber Bragg grating temperature sensor for marine application

Wang¹,

Sun²,

Li³

et al. 2022

Advanced Sensor Systems and Applications XII

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Fiber Bragg grating (FBG) sensor for marine exploration has gradually attracted people's attention because of its natural characteristics of low investment and high expansion capability. However, it is well known that FBG is not only sensitive to temperature, but also affected by strain, pressure, vibration, refractive index etc. The cross-sensitivity of FBG results in large measurement error for fiber temperature measurement. As an important error source of optical fiber temperature sensing, strain has attracted much attention of researchers. In order to eliminate the interference of strain on FBG temperature measurement, in this paper, we propose a FBG sensor for ocean applications. Two fiber Bragg gratings with different central wavelengths are cascaded to realize the decoupling of temperature and strain sensing. Experimental results show that the temperature sensitivity of the proposed sensor can reach to 9.49 pm/°C in the range from -5°C to 35°C.

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In-Situ High Temperature and Large Strain Monitoring During a Copper Casting Process Based on Regenerated Fiber Bragg Grating Sensors

Cited by 26 publications

References 42 publications

Paralleled Sagnac interferometer and Mach–Zehnder interferometer for enhanced measurements sensitivity based on Vernier effect

Paralleled Sagnac interferometer and Mach–Zehnder interferometer for enhanced measurements sensitivity based on Vernier effect

Recent advances in optical fiber high-temperature sensors and encapsulation technique [Invited]

Fiber Bragg grating temperature sensor for marine application

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