During the long and high-intensity railway use, all kinds of defects emerge, which often produce light to moderate damage on surface, adversely affects stable operation trains even endangers safety travel. Currently, models for detecting rail surface are ineffective, self-collected images have poor illumination insufficient defect data. In aforementioned problems, this article suggests an impro...

Abstract Rail surface defects are potential danger factors for railway systems, and visual inspection of plays a vital role in rail maintenance. Recently, the methods based on deep learning have been widely used but such systems often face problem lack defect samples training models at start‐up, which is called cold‐start problem. It challenging to obtain sufficient since sparse even non‐existe...

Rail corrugation is a common railway defect that involves diverse and complex factors. grinding also the most commonly used method to address corrugations. Through numerous irregularity tests one-third octave frequency spectrum analyses, this study determined characteristics development process for rail on high-speed tracks. The vibration transmission properties of train were tested using force...

Abstract The railroad rail support trains and contributes to their operation. Internal surface defects occur on the due various combinations of causes including fatigue loading cyclic tension compression among others from deterioration along with temperature differences seasonal changes. Surface such as head check, shelling, squats start out in become internal poor maintenance, ultimately resul...

July-August 2012 Imagine you fly home from vacation with your one-and-ahalf-year-old son who is traveling for free as a “lap child.” In the airport parking lot, you put him into his forwardfacing car seat, where he sits much more contentedly than he did in the rear-facing one that was mandatory until his first birthday. After he falls asleep on the way home, you transfer him to his crib without...

The detection of rail surface defects is an important part of railway daily inspection, according to the requirements of modern railway automatic detection technology on real-time detection and adaptability. This paper presents a method for real-time detection of rail surface defects based on machine vision. According to the basic principle of machine vision, an image acquisition device equippe...