Fatigue crack growth in a welded rail under the influence of residual stresses

Skyttebol, Anders; Josefson, B. L.; Ringsberg, Jonas W.

doi:10.1016/j.engfracmech.2004.04.009

Cited by 102 publications

(79 citation statements)

References 7 publications

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“…Thus, in the 1950's the first welded rails begun to appear in the railway tracks. Nowadays they have become the most used ones due to the improved ride quality, increased rail and rolling stock fatigue life, and reduced maintenance costs, as stated by Skyttebol (2005) and Kish (2013). However, by using the CWR, new problems have arisen related to failure modes caused by thermal loads in the rails.…”

mentioning

confidence: 99%

Design of a new high lateral resistance sleeper and performance comparison with conventional sleepers in a curved railway track by means of finite element models

Montalbán-Domingo

Herráiz

Zamorano³

et al. 2014

Lat. Am. j. solids struct.

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The lack of lateral resistance in a curved railway track can produce misalignment problems due to the centrifugal forces when the trains pass through. Moreover, most of the times continuous welded rails (CWR) are used in nowadays railway tracks, which can induce the track buckling as a result of thermal loads caused by high temperature gradients. A new sleeper has been designed to provide higher lateral resistance of the track. A finite element model has been developed to analyze the lateral movements of an actual curved track subjected to lateral resistance problems. Then, variations on the finite element model have been made to study the response of the track when different sleepers are used. Thus, the performance of the different sleepers in the modeled track has been analyzed, resulting that the inclusion of the new sleeper in the track can improve the lateral resistance between 39 and 55 % with respect to a track with conventional sleepers made of wood or concrete.

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mentioning

confidence: 99%

Design of a new high lateral resistance sleeper and performance comparison with conventional sleepers in a curved railway track by means of finite element models

Montalbán-Domingo

Herráiz

Zamorano³

et al. 2014

Lat. Am. j. solids struct.

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“…[101][102][103][104]). Besides the transverse crack geometries shown in Figure 55, further crack configurations such as web cracks induced by bolt holes and weldments, vertical axial rail head cracks (splits) and cracks in switches have been investigated as well [105][106][107][108][109][110][111]. No detailed discussion of the various analyses listed above will be given here.…”

Section: Final Crack Propagationmentioning

confidence: 99%

“…[43][44][45]53,54]). Alternatively, they can be determined by use of various measuring techniques such as the destructive saw-cutting and hole-drilling method [53] or the non-destructive X-ray and neutron diffraction [46,47] methods.…”

Section: Figure 22mentioning

confidence: 99%

Introduction to the damage tolerance behaviour of railway rails – a review

Zerbst¹,

Lundén

Edel

et al. 2009

Engineering Fracture Mechanics

175

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Despite substantial advantages in material development and in periodic non-destructive inspection together with periodic grinding and other measures in order to guarantee safe service, fatigue crack propagation and fracture is still in great demand as emphasised by the present special issue. Rails, as the heart of the railway system, are subjected to very high service loads and harsh environmental conditions. Since any potential rail breakage includes the risk of catastrophic derailment of vehicles, it is of paramount interest to avoid such a scenario. The aim of the present paper is to introduce the most important questions regarding crack propagation and fracture of rails. These include the loading conditions: contact forces from the wheel and thermal stresses due to restrained elongation of continuously welded rails together with residual stresses from manufacturing and welding in the field, which is discussed in Section 2. Section 3 provides an overview of crack-type rail defects and potential failure scenarios. Finally the stages of crack propagation from initiation up to final breakage are discussed.

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“…This method is able to improve the continuity and integrity of the track structure, provide a good riding performance, extend service life of rails, and decrease labor in maintenance, which has been widely accepted in the railway. However, the geometrical profiles of rail welds are hardly to maintain due to the limitation of the welding process and the improper operation [3], the phase transformation between welding materials and base metals [4], and the influence of residual stress [5] and fatigue crack [6]. This phenomenon has been recently observed by Gao et al [1] who conducted detailed measurement and statistics on the geometric irregularity of rail welds in Chinese high-speed lines and found that short-wave irregularity is a main form of surface defects in the rail weld zones.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of Wheel-Rail Interaction at Rail Weld in High-Speed Railway

Wang

Xiao

et al. 2017

Shock and Vibration

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As a main part of continuously welded rail track, rail weld widely exists in high-speed railway. However, short-wave irregularities can easily initiate and develop in rail weld due to the limitation of welding technology and thus rail weld has been a main high-frequency excitation and is responsible for deterioration of track components. This work reports a 3D finite element model of wheel-rail rolling contact which can simulate dynamic wheel-rail interaction at arbitrary contact geometry up to 400 km/h. This model is employed to investigate dynamic response of wheel-rail interaction at theoretical and measured rail weld, including wheel-rail force and axlebox acceleration. These simulation results, combined with Quality Index (QI) method, are used to develop a quantitative expression, which can be easily applied for evaluating rail weld deterioration based on measured rail profiles and axle-box acceleration.

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Fatigue crack growth in a welded rail under the influence of residual stresses

Cited by 102 publications

References 7 publications

Design of a new high lateral resistance sleeper and performance comparison with conventional sleepers in a curved railway track by means of finite element models

Design of a new high lateral resistance sleeper and performance comparison with conventional sleepers in a curved railway track by means of finite element models

Introduction to the damage tolerance behaviour of railway rails – a review

Dynamic Response of Wheel-Rail Interaction at Rail Weld in High-Speed Railway

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