A Practical Structural Health Monitoring System for High-Speed Train Car-Body

Wang, Jun; Wang, Tiantian; Luo, Qizhang

doi:10.1109/access.2019.2954680

Cited by 15 publications

(3 citation statements)

References 33 publications

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“…SHM is a major trend as an application in the transport domain, and it includes aircraft state monitoring, high-speed train car-bodies, rail tracks, bridges, etc. [2][3][4][5][6]. Here, SHM in carbodies is considered for potential cracks or disjoint parts.…”

Section: Introductionmentioning

confidence: 99%

Application of Forward Error Correction (FEC) Codes in Wireless Acoustic Emission Structural Health Monitoring on Railway Infrastructures

Spyrou

Kappatos

2022

Infrastructures

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Structural health monitoring (SHM) has been extensively used in the railway industry, with applications ranging from railway infrastructures to carbody shells. An SHM method that dominates monitoring procedures is Acoustic Emissions (AE). The utilisation of the AE method could use a significantly large amount of data, collected and forwarded to terminal computers using wireless communications. Nowadays, the use of 5G is taking over traditional wireless such as Wi-Fi and 4G telecommunications. However, errors in the transmission due to noisy channels may be experienced. The SHM system may result in the wrong detection of a potential defect in a railway infrastructure with dangerous consequences, such as derailment. Hence, methods for adequately dealing with these errors need to be established, such as Forward Error Correction (FEC) codes. In this paper, we suggest the use of the wireless FEC codes applied to a number of deployed AE devices, in order to perform correction at the transmissions. We investigate the new POLAR codes and compare this method with the Reed-Solomon (RS) codes. We present simulations that the POLAR codes are more efficient with trials using the AFF3CT simulator.

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Section: Introductionmentioning

confidence: 99%

Application of Forward Error Correction (FEC) Codes in Wireless Acoustic Emission Structural Health Monitoring on Railway Infrastructures

Spyrou

Kappatos

2022

Infrastructures

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“…AE, along with the underlying technology of piezoelectric transducer mechanism (lead zirconate titanate PZT and relevant piezoelectric ceramics and crystal), has played an important role in the detection of failures in the transport industry. AE monitoring applications comprise aircraft material state monitoring, high speed train car-bodies, bridges and rail tracks [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Acousto-ultrasonic analysis of defects in composite specimens used in transportation domain

Spyrou¹,

Tsenis²,

Kappatos³

2021

J. meas. eng.

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Metal parts have recently been substituted with composite in the transport industry due to their characteristics, which include increased strength, stiffness and reduced weight. Acoustoultrasonics is an inspection technique, which combines the acoustic emission methodology with ultrasonic simulation of stress waves to assess defect states in materials. Acousto-ultrasonics belong to the family of inspection tools, which emerge to identify and measure occurred damage or decay state of transportation modes and infrastructure. In this paper, we attempt to detect defects by performing initial experiments with composite specimens. Specifically, the attenuation of simulated acoustic emission events are measured aiming to further investigate the phenomenon of edge reflections from small composite specimens. Also, only two features from the signal can be used to detect two different types of faults. Finally, a new triangular-like larger specimen is introduced and assessed using the two sensors, in order to show the difference of the two aforementioned features when two different material and dimension specimens are used.

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“…AE, along with the underlying technology of piezoelectric transducer mechanism (lead zirconate titanate PZT and relevant piezoelectric ceramics), has a long successful story in detecting failures in the transportation domain. Applications of AE monitoring include aircraft state monitoring, high speed train car-bodies, rail tracks as well as bridges [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

An initial acousto-ultrasonic experimental investigation of defects in composite specimens used in the transportation domain

Tsenis¹,

Spyrou²,

Kappatos³

2020

Vib. proced.

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Recently, the transport industry has been substituting metal with composite parts due to their properties, such as increased strength, stiffness and lightweightness. Inspection and monitoring are very important tools that detect, identify and measure occurred damage or deterioration state of transport means and infrastructure. Acousto-ultrasonics is an non-destructive testing technique, which is essentially a combination of acoustic emission methodology with ultrasonic simulation of stress waves to assess defect states in certain materials. In this paper, we perform initial experiments with composite specimens, attempting to detect defects. In particular, the attenuation of simulated acoustic emission events are measured in order to further investigate the phenomenon of edge reflections from small composite specimens. Furthermore, the detection of two different types of defects is shown using only two features extracted from the signal.

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A Practical Structural Health Monitoring System for High-Speed Train Car-Body

Cited by 15 publications

References 33 publications

Application of Forward Error Correction (FEC) Codes in Wireless Acoustic Emission Structural Health Monitoring on Railway Infrastructures

Application of Forward Error Correction (FEC) Codes in Wireless Acoustic Emission Structural Health Monitoring on Railway Infrastructures

Acousto-ultrasonic analysis of defects in composite specimens used in transportation domain

An initial acousto-ultrasonic experimental investigation of defects in composite specimens used in the transportation domain

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