Challenges in a Field Study of Wear and Rolling Contact Fatigue on Railway Rails
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review
|Title of host publication||Proceedings of The Third International Conference on Railway Technology: Research, Development and Maintenance|
|Subtitle of host publication||Wheel-rail Damage: Influencing Factors and Metallurgical Aspects|
|Place of Publication||Railways 2016 (Sardinia)|
|Publication status||Published - 2016|
|Publication type||A4 Article in a conference publication|
|Event||International conference on railway technology - |
Duration: 13 Apr 2016 → …
|Conference||International conference on railway technology|
|Period||13/04/16 → …|
Numerous problems have been encountered during the analysis of these field measurements. Since these problems are common to many other studies, this paper is dedicated to the discussion of these problems and suggestions for their solutions. Also, smaller issues regarding regression analysis are addressed.
The problems are divided into three main categories, which are the quality of the data, sampling from mixed populations, and the correlation of track geometry and loading parameters. The quality of the data involved measurement accuracy and the calculation of the degradation speed. The mixed populations' problem means that the rails do not degrade uniformly, and measurements from undamaged rail weight down the results of the analysis. The correlation problem means that variables that are used to predict rail degradation are not independent, which has important implications to regression analysis and related conclusions.