Search Results - "Kabo, Elena"

Wheel/rail rolling contact fatigue – Probe, predict, prevent by Ekberg, Anders, Åkesson, Bengt, Kabo, Elena

“…With the aim of putting prediction and prevention of rolling contact fatigue of wheels and rails in context, the paper sets out with a description of the…”
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Fatigue of railway wheels and rails under rolling contact and thermal loading—an overview by Ekberg, Anders, Kabo, Elena

“…An overview of rolling contact fatigue phenomena occurring at wheels and rails is given. The paper outlines mechanisms behind the various phenomena, means of…”
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Evaluation of stress intensity factors under multiaxial and compressive conditions using low order displacement or stress field fitting by Andersson, Robin, Larsson, Fredrik, Kabo, Elena

“…•SIFs are estimated by fitting a minimalistic ansatz to FE-approximations.•Different modes are accurately distinguished during mixed mode loading.•Accurate…”
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Integrated analysis of dynamic vehicle–track interaction and plasticity induced damage in the presence of squat defects by Andersson, Robin, Torstensson, Peter T., Kabo, Elena, Larsson, Fredrik, Ekberg, Anders

“…Despite significant efforts, the mechanisms behind the formation of squats – a form of rolling contact fatigue (RCF) damage – are not fully understood. This…”
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Influence of railway wheel tread damage on wheel–rail impact loads and the durability of wheelsets by Maglio, Michele, Vernersson, Tore, Nielsen, Jens C. O., Ekberg, Anders, Kabo, Elena

“…Dynamic wheel–rail contact forces induced by a severe form of wheel tread damage have been measured by a wheel impact load detector during full-scale field…”
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Subsurface initiated rolling contact fatigue of railway wheels as generated by rail corrugation by Ekberg, Anders, Kabo, Elena, Nielsen, Jens C.O., Lundén, Roger

“…A fracture mechanics based fatigue index for rolling contact fatigue (RCF) initiated at deep (10–25 mm) defects is derived and employed together with a fatigue…”
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Rolling contact fatigue assessment of repair rail welds by Kabo, Elena, Ekberg, Anders, Maglio, Michele

“…A repair welding procedure is numerically simulated. To validate the numerical model, analyses of the temperature evolution in a repaired rail are compared to…”
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Railway wheelset fatigue life estimation based on field tests by Maglio, Michele, Kabo, Elena, Ekberg, Anders

“…Field tests using an instrumented powered wheelset were performed to investigate fatigue damage accumulation in railway axles. Axle bending strains were…”
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Rail and wheel health management by Ekberg, Anders, Kabo, Elena, Lundén, Roger

“…Rail and wheel health management is investigated with focus on deterioration phenomena in the wheel/rail contact interface – plastic deformation, wear, and…”
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Numerical assessment of the loading of rolling contact fatigue cracks close to rail surface irregularities by Andersson, Robin, Kabo, Elena, Ekberg, Anders

“…Rolling contact fatigue damage of railway rails in the form of squats, characterised by local depressions and cracks located at the rail surface, has been…”
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Finite element analyses of rail head cracks: Predicting direction and rate of rolling contact fatigue crack growth by Nezhad, Mohammad Salahi, Larsson, Fredrik, Kabo, Elena, Ekberg, Anders

“…A numerical framework in 3D for predicting crack growth direction and rate in a rail head is presented. An inclined semi-circular surface-breaking gauge corner…”
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Numerical prediction of railhead rolling contact fatigue crack growth by Salahi Nezhad, Mohammad, Larsson, Fredrik, Kabo, Elena, Ekberg, Anders

“…The influence of crack face friction on predicted crack growth in a 2D rail model is investigated numerically. An isolated surface-breaking inclined rolling…”
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Numerical predictions of crack growth direction in a railhead under contact, bending and thermal loads by Salahi Nezhad, Mohammad, Floros, Dimosthenis, Larsson, Fredrik, Kabo, Elena, Ekberg, Anders

“…The effect of different operational loading scenarios on predicted crack growth direction for a propagating inclined railhead crack is assessed by 2D finite…”
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Temperature-dependent evolution of the cyclic yield stress of railway wheel steels by Ahlström, Johan, Kabo, Elena, Ekberg, Anders

“…The evolution of the cyclic yield stress for a railway wheel steel (UIC ER7T) during cyclic plastic straining has been characterized at different temperatures…”
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Numerical investigation of crack initiation in rails and wheels affected by martensite spots by Andersson, Robin, Ahlström, Johan, Kabo, Elena, Larsson, Fredrik, Ekberg, Anders

“…•Thermally induced White Etching Layers (WELs) appear on rails and wheels.•Crack initiation close to WELs due to rolling/sliding contact is…”
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Stress gradient effects in surface initiated rolling contact fatigue of rails and wheels by Ekberg, Anders, Kabo, Elena, Lundén, Roger, Matsui, Motohide

“…The paper investigates gradient effects, which relate to how highly stressed regions should be dealt with in fatigue design analyses. In particular stress…”
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Numerical assessment of the influence of worn wheel tread geometry on rail and wheel deterioration by Karttunen, K., Kabo, E., Ekberg, A.

“…Current maintenance criteria of railway wheel geometries consider mainly flange thickness, flange height, flange gradient, and depth of tread wear. These…”
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An efficient approach to the analysis of rail surface irregularities accounting for dynamic train-track interaction and inelastic deformations by Andersson, Robin, Torstensson, Peter T., Kabo, Elena, Larsson, Fredrik

“…A two-dimensional computational model for assessment of rolling contact fatigue induced by discrete rail surface irregularities, especially in the context of…”
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Estimation of gauge corner and flange root degradation from rail, wheel and track geometries by Karttunen, K., Kabo, E., Ekberg, A.

“…A methodology to predict gauge corner and flange root degradation in terms of rolling contact fatigue (RCF) and wear from measured rail, wheel and track…”
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The influence of track geometry irregularities on rolling contact fatigue by Karttunen, K., Kabo, E., Ekberg, A.

“…Optimised maintenance of railway tracks requires knowledge of how a deteriorated track geometry will affect subsequent damage of the track. In this study the…”
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