Stress-based fatigue reliability analysis ofthe rail fastening spring clipunder traffic loads

Mechanical Spring Reliability Assessments Based on FEA Generated Fatigue Stresses and Monte Carlo Simulated Stress/Strength Distributions

Dispatcher reliability analysis : SPICA - RAIL experiments

Although considered as not safety critical (safety function being performed by other sub-systems), railway supervision systems can contribute to hazardous scenarios. It is of primary importance to identify this type of scenarios and evaluate the behaviour of human operators. A state of the art in human reliability is presented. This article presents an experimental protocol based on an automati...

Reliability-Based Optimization of Rail Inspection

This thesis proposes a quantitative method to optimize inspection/repair intervention in rail defect management. Rail defect management is important for track maintenance, since rails are the most significant and basic component of the track systems. Rail inspection is a fundamental intervention to prevent rail failure. Railroads have evolved the rail inspection interval based on their empirica...

Structural Fatigue Reliability Based on Extension of Random Loads into Interval Variables

According to the problem that for a structure under random loads, the structural fatigue life can’t be directly calculated out by S-N curves and linear Miner cumulative damage rule. Owing to the uncertainty of loads, and the problem of the inaccuracy of calculated structural reliability index for the existence of deviation between measured data in projects and real data, the research method for...

Online Condition Monitoring of a Rail Fastening System on High-Speed Railways Based on Wavelet Packet Analysis

The rail fastening system is an important part of a high-speed railway track. It is always critical to the operational safety and comfort of railway vehicles. Therefore, the condition detection of the rail fastening system, looseness or absence, is an important task in railway maintenance. However, the vision-based method cannot identify the severity of rail fastener looseness. In this paper, t...