Results 11 to 20 of about 357 (162)
Detection of Rail Defects Using NDT Methods
Sensors, 2023 The rapid development of high-speed and heavy-haul railways caused rapid rail defects and sudden failure. This requires more advanced rail inspection, i.e., real-time accurate identification and evaluation for rail defects. However, existing applications
Longhui Xiong +4 more
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An Intelligence Method for Recognizing Multiple Defects in Rail [PDF]
Sensors, 2021 Ultrasonic guided waves are sensitive to many different types of defects and have been studied for defect recognition in rail. However, most fault recognition algorithms need to extract features from the time domain, frequency domain, or time-frequency domain based on experience or professional knowledge.
Fei Deng +5 more
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Extending service life of rails in the case of a rail head defect [PDF]
Journal of the Croatian Association of Civil Engineers, 2021 Rails are subjected to the processes of wear, corrosion and contact and bending fatigue during their lifecycle. As a result of these processes, various types of damage and defects are formed in rails. The residual life of rails depends on the size, position, and orientation of defects.
Dmitry Ovchinnikov +3 more
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Studs: a squat-type defect in rails [PDF]
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2011 In the mid-2000s, a new rail defect that was initially classified as a squat became increasingly common on London Underground's track. By 2006, there were about 600 of these and they had become the Underground’s single most common rail defect. This defect occurred almost exclusively on lines carrying relatively new rolling stock. The work reported here
Grassie, Stuart L +3 more
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Rail-5k: a Real-World Dataset for Rail Surface Defects Detection
CoRR, 2021 This paper presents the Rail-5k dataset for benchmarking the performance of visual algorithms in a real-world application scenario, namely the rail surface defects detection task. We collected over 5k high-quality images from railways across China, and annotated 1100 images with the help from railway experts to identify the most common 13 types of rail
Zihao Zhang +4 more
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Optical diagnostics of railway rail defects [PDF]
Journal of Physics: Conference Series, 2021 Abstract The safety of rail transport, including passenger traffic, largely depends on the timely diagnosis of the state of the rail infrastructure. To determine the state of metal structures, the method of acoustic emission (AE) is used.
A Yu Poroykov +3 more
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Sadhana, 1986 The performance of rails in service is greatly influenced by the presence of metallurgical defects. Hydrogen-induced shatter crack is the most prominent among these and has been discussed in detail. Principal causes of rail failure have been outlined and different types of defects leading to failure of rails during service have been documented. Wear of
N S Mishra, V Ramaswamy, Sanak Mishra
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CLASSIFICATION OF RAIL DEFECTS
Science and Transport Progress, 2005 A new classification of rail defects is proposed in the paper.
Ivanov, P. S. +7 more
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Chinese Journal of Mechanical Engineering, 2023 Improving the detection accuracy of rail internal defects and the generalization ability of detection models are not only the main problems in the field of defect detection but also the key to ensuring the safe operation of high-speed trains.
Fupei Wu, Xiaoyang Xie, Weilin Ye
doaj +1 more source
Research on a Rail Defect Location Method Based on a Single Mode Extraction Algorithm
Applied Sciences, 2019 This paper proposes a rail defect location method based on a single mode extraction algorithm (SMEA) of ultrasonic guided waves. Simulation analysis and verification were conducted.
Bo Xing +4 more
doaj +1 more source