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Spatio-spectral 4D coherent ranging using a flutter-wavelength-swept laser. [PDF]
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A FPGA based ultrasonic rail flaw detection system
2017 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT), 2017Ultrasonic testing is one of the main methods used for rail flaw detection. In order to detect the flaw in different positions in the rail and increase the detecting accuracy, multiple ultrasonic probes are needed. It is difficult for real time detecting when the rail testing vehicle runs at a high speed.
Wei Li 0148, Houxiang Zhang
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Deep Autoencoder for Ultrasound-Based Rail Flaw Detection
2022 Joint Rail Conference, 2022Abstract Safety is the principal concern of the railway industry, and rail internal defects can pose significant risks to safe and efficient railroad operations. Effective rail flaw detection, especially for transverse defects, is critical to prevent accidents and derailments due to broken rails.
Yuning Wu, Xuan Zhu, Jay Baillargeon
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The optimization of transducer layout in rail flaw detection
2015 IEEE Far East NDT New Technology & Application Forum (FENDT), 2015The railway is a kind of large volume public transportation, and more and more attention is paid to the safety of rails nowadays. As the rail is subject to heavy cyclic loads of trains, it is easily broken in the long-term operations, and this will seriously affect the safety of the trains. As an important rail flaw detection method, ultrasonic testing
Lei Zhang +3 more
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Rail flaw detection: overview and needs for future developments
NDT & E International, 2004Rail Flaw Detection has an important part to play in ensuring the safety of the world's railroads. Recent accidents caused by broken rails have focused attention on the technologies that enable the detection of flaws in railroad rail. This paper reviews the technologies currently employed, along with examples of recent field applications.
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A novel text-style sequential modeling method for ultrasonic rail flaw detection
2020 IEEE Vehicle Power and Propulsion Conference (VPPC), 2020Integrity of rails is the foundation of safe rail transportation. It is critical to detect internal rail flaws in time, and one popular solution to this issue is ultrasonic techniques. On the other hand, long short-term memory (LSTM) has been proven in text classification to which we think the ultrasonic rail flaw detection can be quite similar.
Xiao Luo +5 more
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Rail flaw detection system based on electromagnetic acoustic technique
2010 5th IEEE Conference on Industrial Electronics and Applications, 2010As a result of the development of higher speeds and heavier loads of rail networks, rail defects have been more serious than ever before. Current piezoelectric ultrasonic detection devices are often inadequate for rail inspection, due to high misjudgement or undetected error rate, and complex structure.
Zhu Yi +4 more
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Flaw detection in high speed train's rail based on EMD and PSD
2011 IEEE International Instrumentation and Measurement Technology Conference, 2011This paper proposes a new flaw detection method based on EMD and PSD with application to high speed train's rail. The signals in different scenarios are generated by utilizing the finite element model. In this paper, the empirical mode decomposition method is used to decompose the investigated signals into intrinsic mode functions and the flaw features
Xin Zhang +3 more
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Non-contact rail flaw detection system: first field test
SPIE Proceedings, 2007Researchers at UCSD, with the initial support of NSF and the current support of the Federal Railroad Administration (FRA), have been working on a flaw detection prototype for rails that uses non-contact ultrasonic probing and robust data processing algorithms to provide high speed and high reliability defect detection in these structures. Besides the
Piervincenzo Rizzo +4 more
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