Out-of-roundness in railway wheels, particular polygonal wear resulting regular, multi-lobed, out-of-round has become a significant problem recent years. It is of concern to operators due the increased noise and vibration it can cause. This polygonisation caused by cyclic but exact mechanism leading this type not fully understood. appears be result dynamic linking between resonance or other per...

Railway concrete sleepers have been developed and utilized in railway industry for over 50 years. Cyclic loading because of vibration on sleepers due to the train loading and the velocity of train itself and also a small percentage of bad wheels, can eventually lead to a crack network and failure of component. The objective of this study is to investigate the load carrying capacity of the selec...

The Dynamic Railway Diagnostic System (DRD) is a DSP-based measurement system that measures and stores the deformation signal of the rail caused by an in-motion train. The DRD is an intelligent sensor system, where the DSP-based sensor units preprocess and store the deformation signal, and a HOST PC collects the results and performs a second level of signal processing. This architecture makes t...

Damage to the surface of railway wheels and rails commonly occurs in most railways and, if not detected at an early stage, can result in rapid deterioration and possible failure incurring high maintenance costs. If detected at an early stage these maintenance costs can be minimised. This paper presents an investigation into the use of time-frequency analysis of vibrations in railway vehicles fo...

The purpose of this paper is to study the behavior of elastic-plastic stresses under severe drag braking. A railway wheel performs three tasks, aiding in trian movement, supporting the car load, and acting as a brake drum. Finite element computer programs are developed for elasto-plastic stress analysis. An attempt is made here to find an improved fillet profile of the wheel with the intention ...