Loosening of threaded fasteners can cause preload decline, induce bolt fatigue fracture, and
severely compromise the reliability of mechanical products. Loosening detection is an …

In recent years, railway infrastructures and systems have played a significant role as a highly
efficient transportation mode to meet the growing demand in transporting both cargo and …

The excitation and vibration triggered by the long-term operation of railway vehicles
inevitably result in defective states of catenary support devices. With the massive …

The railway track fasteners play a critical role in fixing the track on the ballast bed. Achieving
full automation of the fastener defect detection is significant in terms of ensuring track safety …

Due to the impact of the surrounding environment changes, train-induced vibration, and
human interference, damage to metro tunnel surfaces frequently occurs. Therefore …

Rail surface defects (RSDs) are a major problem that reduces operation safety.
Unfortunately, the existing RSD detection systems have very limited accuracy. Current …

Railroad tracks need to be periodically inspected and monitored to ensure safe
transportation. Automated track inspection using computer vision and pattern recognition …

During the regular service life of high‐speed railway (HSR), there might be serious defects
in the concrete slabs of the infrastructure systems, which may further significantly affect …

Abstract According to the Federal Railroad Administration (FRA) database, track component
failure is one of the major factors causing train accidents. To improve railroad safety and …

Rail inspection based on visual inspection system (VIS) has drawn much attention recently,
since VIS is automatic, fast, nondestructive, and objective. However, visual rail inspection is …