Long term rail surface damage considering maintenance interventions

Krishna, Visakh; Nia, Saeed Hossein; Casanueva, Carlos; Stichel, Sebastian

doi:10.1016/j.wear.2020.203462

Cited by 19 publications

(8 citation statements)

References 16 publications

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“…Also, the rough damage function indicates higher damage for the 600 m radius cases when compared to the 1100 m radius case. This inference has earlier been observed in [1] where higher concentrations of RCF were observed for curve radii of 600 m. The spread of damage increment values for the cases at lower energy dissipation only increase further for the more complex Wedge model. This is particularly significant when analysis is restricted to curves with larger radii where the energy dissipation values lie below 100-120 Nm/m.…”

Section: Resultssupporting

confidence: 81%

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Rail RCF damage quantification and comparison for different damage models

et al. 2021

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There are several fatigue-based approaches that estimate the evolution of rolling contact fatigue (RCF) on rails over time and built to be used in tandem with multi-body simulations of vehicle dynamics. However, most of the models are not directly comparable with each other since they are based on different physical models even though they shall predict the same RCF damage at the end. This article studies different approaches to quantifying RCF and puts forward a measure for the degree of agreement between them. The methodological framework studies various steps in the RCF quantification procedure within the context of one another, identifies the ‘primary quantification step’ in each approach and compares results of the fatigue analyses. In addition to this, two quantities—‘similarity’ and ‘correlation’—have been put forward to give an indication of mutual agreement between models. Four widely used surface-based and sub-surface-based fatigue quantification approaches with varying complexities have been studied. Different operational cases corresponding to a metro vehicle operation in Austria have been considered for this study. Results showed that the best possible quantity to compare is the normalized damage increment per loading cycle coming from different approaches. Amongst the methods studied, approaches that included the load distribution step on the contact patch showed higher similarity and correlation in their results. While the different approaches might qualitatively agree on whether contact cases are ‘damaging’ due to RCF, they might not quantitatively correlate with the trends observed for damage increment values.

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Section: Resultssupporting

confidence: 81%

“…Management of rail surface damage has only been getting more critical to guarantee safety at still economically feasible cost. Study of RCF has assumed even more importance in recent times since RCF mitigation measures are driving a lot of track maintenance and wheel-reprofiling activities [1].…”

Section: Introductionmentioning

confidence: 99%

Rail RCF damage quantification and comparison for different damage models

et al. 2021

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“…Surface defects on in-service rails are inevitable after prolonged use, reducing their service life and the safety of train operation [1,2]. Currently, rail grinding is the primary technological procedure utilized to repair rail surface problems [3,4]. Heavy-duty grinding wheels made of phenolic resin binder are frequently required to execute grinding operations on rails in the rail grinding process [5,6].…”

Section: Introductionmentioning

confidence: 99%

Study on the Preparation and Performance of Silicone-Modified Phenolic Resin Binder for Rail Grinding Wheels

et al. 2023

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A scheme for manufacturing heavy-duty rail grinding wheels with silicone-modified phenolic resin (SMPR) as a binder in the field of rail grinding is presented to improve the performance of grinding wheels. To optimize the heat resistance and mechanical performance of rail grinding wheels, an SMPR for industrial production of rail grinding wheels was prepared in a two-step reaction using methyl-trimethoxy-silane (MTMS) as the organosilicon modifier by guiding the occurrence of the transesterification and addition polymerization reactions. The effect of MTMS concentration on the performance of silicone-modified phenolic resin for application in rail grinding wheels was investigated. The molecular structure, thermal stability, bending strength, and impact strength values of the SMPR were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and mechanical property testing, and the effect of MTMS content on the resin properties was investigated. The results indicated that MTMS successfully improved the performance of the phenolic resin. The thermogravimetric weight loss temperature of the SMPR modified by MTMS with 40% phenol mass at 30% weight loss is 66% higher than that of common phenolic resin (UMPR), exhibiting the best thermal stability; in addition, its bending strength and impact strength were enhanced by approximately 14% and 6%, respectively, compared with those of common UMPR. This study utilized an innovative Bronsted acid as a catalyst and simplified several intermediate reactions in the conventional silicone-modified phenolic resin technology. This new investigation of the synthesis process decreases the manufacturing cost of the SMPR, liberates it from the restrictions of grinding applications, and enables the SMPR to maximize its performance in the rail grinding industry. This study serves as a reference for future work on resin binders for grinding wheels and the development of rail grinding wheel manufacturing technology.

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“…Ramalho (2015) analyzed the wear mechanisms and compared with a real rail-wheelset, the fatigue cracks and strain hardening effects of the contact surface are researched. Krishna et al (2020) proposed a new method for estimating track wear and rolling contact fatigue maintenance costs, considering the effect of maintenance measures on long-term track profile evolution. Jin et al (2007) proposed a numerical method to predict the wear of curved tracks.…”

Section: Introductionmentioning

confidence: 99%

Research of operation mode of high-speed trains on the effect of rail wear evolution law

Qi,

Wang,

Cui

et al. 2023

ILT

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Purpose With the increased speed and mileage of high-speed lines, the problem of rail wear is increasing. In actual operation, a large number of abnormal wear phenomena occur on both vehicles and rails during fixed line operation; therefore, the purpose of the study is to explored the rail wear for a variety of vehicles running in mixed operation. Design/methodology/approach This paper used the universal mechanism multibody dynamics software to establish the CRH2 high speed train (HST) and the CRH3 HST vehicle dynamic models, respectively. The mixed running of HSTs on the effect of rail wear evolution law was analyzed. The rail wear of the two vehicles with different curve radii, different wheel diameters and different under-rail stiffness was compared and analyzed. Findings The result showed that the rail wear of CRH3 HST is greater than that of CRH2 HST. The rail wear in the tangent track under mixed operation conditions is 25.4% less than when CRH3 HST operated independently. When there is a 1-mm wheel diameter difference, the maximum rail wear of CRH2 HST and CRH3 HST increases by 263% and 44%, respectively. The amount of rail wear is proportional to the under-rail stiffness, and the position of the maximum wear is almost unchanged. Originality/value Most studies on the evolution law of rail wear are conducted for a single vehicle type and a single line. This study explored the mixed running of HSTs on the effect of rail wear evolution law. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-08-2023-0276/

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Long term rail surface damage considering maintenance interventions

Cited by 19 publications

References 16 publications

Rail RCF damage quantification and comparison for different damage models

Rail RCF damage quantification and comparison for different damage models

Study on the Preparation and Performance of Silicone-Modified Phenolic Resin Binder for Rail Grinding Wheels

Research of operation mode of high-speed trains on the effect of rail wear evolution law

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