Investigations on the shearing performance of ballastless CRTS II slab based on quasi-distributed optical fiber sensing

Zhang, Xuebing; Li, Wang; Tang, Shenghua; Hongtian, Cui; Xie, Xiaonan; Han, Wei; Liu, Xiaochun; Yang, Delei; Wang, Huaping; Xiang, Ping

doi:10.1016/j.yofte.2022.103129

Cited by 26 publications

(3 citation statements)

References 49 publications

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“…Recognizing the continuous and dynamic development in sensing technologies in transport and the possibilities and installation of sensors in various places, which is already at the production stage [ 46 , 47 ], it can be assumed that appropriate vibration sensors can be installed on the vehicle floor, in places where passengers come into contact with vehicle elements and where vibrations penetrate into people in order to monitor signal parameters, e.g., in terms of comfort, health risks, and exposure.…”

Section: Discussionmentioning

confidence: 99%

Impact and Assessment of Suspension Stiffness on Vibration Propagation into Vehicle

Burdzik

2023

Sensors

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The impact of transport-induced vibrations on people is a particularly important problem. Sudden or intensifying vibration phenomena of a local nature may compromise safety, especially in transport. The paper addresses the results of research on the impact of spring stiffness parameters on the propagation of vibrations in the vehicle structure using simple amplitude and frequency measures. The use of the developed method of selective multi-criteria analysis of frequency bands made it possible to compare the vibrations recorded in the vehicle with a new or worn coil spring. The results of the present study allow the development of a large data base in which all signals are classified by the exploitation parameters and location of the propagation of vibration in the vehicle. The most important findings and achievements of the presented study are the testing of actual suspension components with real damage under controlled conditions, the identification of the vibration propagation path from the wheel to the driver and passenger feet, the quantitative comparison of vibrations affecting humans in the vehicle (through the feet), and the frequency decomposition of vibration for selected bands. These findings improve the proper interpretation of the developed measures and, as a result, the difficulties in using this knowledge at the engineering level, for example, in the design and construction improvement stage. Therefore, innovation points and engineering significances are a method of selective multi-criteria analysis of frequency bands and have potential applications in diagnostics and the design of suspension systems and in terms of passengers’ comfort.

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Section: Discussionmentioning

confidence: 99%

Impact and Assessment of Suspension Stiffness on Vibration Propagation into Vehicle

Burdzik

2023

Sensors

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“…Regarding turbidity detection, distributed optical fiber sensing technology can be employed in specific cases [25]. For instance, an optical fiber can be deployed in a water body to monitor the turbidity of suspended particulate matter by analyzing the changes in the scattered signal detected by the optical fiber sensor.…”

Section: Related Workmentioning

confidence: 99%

High-Precision Monitoring System for Turbidity of Drinking Water by Using Scattering Method

Chen,

Wang,

Wang

2023

IEEE Sensors J.

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To enhance the accuracy of water quality turbidity detection and address the challenges associated with drinking water safety, this study proposes a high-precision turbidity sensor detection approach. However, in practical water quality monitoring, the design of the water quality turbidity monitoring system encounters difficulties arising from air bubbles in the water affecting beam refraction, excessive beam scattering angles impacting detection accuracy, and the need for precise water quality turbidity measurements. To tackle these issues, this study presents a novel design comprising a pressurized air-removing device and an innovative mechanical structure, effectively eliminating difficultto-remove air bubbles in the water channel. Furthermore, a lens with calibration is devised to effectively address the problem of excessive beam scattering angles. Based on the 90°scattering method, the designed sensor achieves an impressive detection limit of 0.001 nephelometric turbidity unit (NTU) and a concentration range of 0-100 NTU. The results demonstrate a significant improvement in the accuracy and interference reduction ability of the sensor designed in this study. The developed high-precision turbidity sensor offers promising potential for advancing water quality monitoring technologies and ensuring safe drinking water for the public.

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“…Destructive interference between discrete states (bright mode) and continuous states (dark mode) with broad spectral lines can obstruct the absorption of light at particular optical wavelengths, so that it leads to an asymmetric line shape [17,18]. The all-dielectric metastructures with Fano resonances can take advantage of the electromagnetic field enhancement generated at resonance wavelengths Meanwhile, this type of sensor has attracted a lot of attention by virtue of its easy integration and no separate coupling is required [19][20][21][22]. For instance, Hu et al, designed an optical sensor based on a composite resonant waveguide grating to support the Fano effect [23].…”

Section: Introductionmentioning

confidence: 99%

Development of Multiple Fano-Resonance-Based All-Dielectric Metastructure for High-Contrast Biomedical Applications

Fan

Cao

et al. 2023

Photonics

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In this paper, an all-dielectric metastructure-based high-contrast refractive index sensor is proposed. This structure can be utilized to detect various concentrations of glycerol-water mixtures by evaluating transmission spectral lines and resonant wavelength shifts related with liquid concentration detection. The experimental and calculated results of the developed sensor structure are able to excite three resonance peaks, demonstrating that the structure is capable of reaching excellent sensing capabilities. It has been established that this work has the potential to be useful in medical and biological detection; this is of great scientific and practical significance.

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Investigations on the shearing performance of ballastless CRTS II slab based on quasi-distributed optical fiber sensing

Cited by 26 publications

References 49 publications

Impact and Assessment of Suspension Stiffness on Vibration Propagation into Vehicle

Impact and Assessment of Suspension Stiffness on Vibration Propagation into Vehicle

High-Precision Monitoring System for Turbidity of Drinking Water by Using Scattering Method

Development of Multiple Fano-Resonance-Based All-Dielectric Metastructure for High-Contrast Biomedical Applications

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