Results 131 to 140 of about 257 (180)
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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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Guided wave–based rail flaw detection technologies: state-of-the-art review
Structural Health Monitoring, 2021The unavoidable increase in train speed and load, as well as the aging of railway facilities, is requiring more and more attention to rail defects detection. As a promising tool for rail, in-service high-speed inspection, guided wave–based detection technologies have been developed in succession by researches in the past two decades. However, there is
Hao Ge +4 more
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Detect the rail track flaw by estimating the camera shaking
17th International IEEE Conference on Intelligent Transportation Systems (ITSC), 2014In this paper, the authors present a method of detecting the rail track bends and flaws. Different from the traditional machine-vision based methods which analyze the images of the rail surface, the authors estimate the shake of the camera - which is caused by the flaw or bend of the rail track - from the video used for railway environment surveillance.
Liang Wang +4 more
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Investigation on Structure & Dynamics of Rail Flaw Detection Vehicle
Applied Mechanics and Materials, 2013The rail flaw detection vehicle which is according to a city rail system construction features has been developed. This vehicle has been used for more than two years and all aspects of the vehicle performance reaches design requirements. The vehicle can meet the demand for rail flaw detection.
Qi Gang Yuan, Ji Min Zhang, Li Wen Man
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Rail Flaw Detection Technologies for Safer, Reliable Transportation: A Review
Journal of Dynamic Systems, Measurement, and Control, 2017This paper delivers an in-depth review of the state-of-the-art technologies relevant to rail flaw detection giving emphasis to their use in detection of rail flaw defects at practical inspection vehicle speeds. The review not only looks at the research being carried out but also investigates the commercial products available for rail flaw detection. It
Alahakoon, S +3 more
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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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Small-Scale Rail Flaw Detection Car Design and Damage Position Estimation
2017 International Conference on Sensing, Diagnostics, Prognostics, and Control (SDPC), 2017As China's railway transport system is getting busier and the trains are continually speeding up, the rails have to bear more and more heavy cyclic loads generated by the repeat force between the wheels and rails, and the internal damages are easier to be produced, which directly endanger the running safety.
Jinling Yao, Gang Yu
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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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Groundwork for Rail Flaw Detection Using Ultrasonic Phased Array Inspection
AIP Conference Proceedings, 2003An apparent increase in the detectability of certain flaws results when the ultrasonic inspection beam was oriented off the longitudinal axis of railroad rail. Here, artificial reflectors were used to better define the extent of material “seen” by inspection beams, and determine how surface curvature might affect the inspection.
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Eye safety considerations of a laser-based rail flaw detection system
ILSC 2007: Proceedings of the International Laser Safety Conference, 2007The Transportation Technology Center, Inc. (TTCI), a subsidiary of the Association of American Railroads (AAR) and Tecnogamma, SPA are evaluating the efficacy of a non-contact, laser-based rail flaw detection system. Through the photo-acoustic effect, the absorption of nanosecond laser pulses by the rail results in the generation of both bulk and ...
Richard Hughes +2 more
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