Use of Surface Acoustic Waves for Crack Detection on Railway Track Components—Laboratory Tests

Gruber, Claudia; Hammer, René; Gänser, Hans-Peter; Künstner, David; Eck, Sven

doi:10.3390/app12136334

Cited by 4 publications

(2 citation statements)

References 12 publications

(22 reference statements)

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“…The typical rail profiles in reference [34] are similar to Figure 5, further corroborating the wear locations. As for RCF, early visual signs of RCF defects typically appear around the gauge corner, a location where many severe cases have also been observed [35][36][37]. These computational results are in agreement with field observations.…”

Section: Relationship Between Contact Forces and Microstructuresupporting

confidence: 84%

Effect of Cyclic Loading on the Surface Microstructure Evolution in the Pearlitic Rail

Shi,

Liu,

Yang

et al. 2023

Coatings

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The effects of cyclic loading on the surface microstructure evolution of different contact locations in a used pearlitic rail were studied. Microstructures were analyzed using Scanning Electron Microscopy (SEM). Meanwhile, grain boundaries and crystallographic orientations were explored via Electron Backscatter Diffraction (EBSD). At last, wheel–rail contact probabilities and forces were calculated using rail profiles. The results indicate that the side wear region located in the gauge face was 71.5% in the high-angle grain boundaries (HAGBs) fraction, 0.88 in the Kernel Average Misorientation (KAM) value, 36% in the recrystallization (REX) fraction, and had a predominant orientation in grains. The rolling contact fatigue (RCF) region situated at the gauge corner was 66.3% in the HAGBs fraction, 0.92 in the KAM value, 33% in the REX fraction, and was mis-orientated in grains. The region located at the edge of the running band was 60.7% in the low-angle grain boundaries (LAGBs) fraction, 0.97 in the KAM value, 12% in the REX fraction, and was mis-orientated in grains. Continuous dynamic recrystallization (cDRX) took place in wear and RCF regions during the cyclic rolling contact loading, creating ultra-fine grains with a transformation from LAGBs to HAGBs, lower KAM values, and more REX. Grains oriented along [111] parallel to the vertical direction in the wear region were influenced by the dominant normal force, while grains in the RCF region were non-oriented, which was attributed to large lateral and vertical forces of similar magnitudes.

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Section: Relationship Between Contact Forces and Microstructuresupporting

confidence: 84%

Effect of Cyclic Loading on the Surface Microstructure Evolution in the Pearlitic Rail

Shi,

Liu,

Yang

et al. 2023

Coatings

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“…Consideration of the requirements of both components helps explore and understand the nature of the development of certain phenomena [31,32] in the process of the interaction between the components. These phenomena influence the functional safety of transport infrastructure [33][34][35][36][37][38][39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Dynamic Processes of Rolling Stock–Track Interaction: Experimental Realization

et al. 2023

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The dynamic process of the railway track–rolling stock interaction is characterized by time-dependent dynamics that are determined by both the varying characteristics of the interaction objects and the varying climatic conditions. This study investigated the effect of different groups of influence on the dynamic process, with a view towards the reduction of the cases of randomness during the registration of the process in experiments and an expansion of the understanding of the processes happening during the assessment of the registered data. The static nature of the rolling stock has been demonstrated to be not uniform and to influence the scattering of dynamic values under the variation of vertical and horizontal forces due to the characteristics of a rolling stock. The position of the rolling stock truck relative to the track axis during the movement of the rolling stock has been shown to enhance static non-uniformity. The results of the longitudinal force measurements under the three-point and Schlumpf methods have suggested that it is necessary to investigate the process of rail warping under the action of the rolling stock wheels. To enhance the output of the experiments, it is proposed to consider not only the stiffness of the basis of the oscillatory processes that imitate the physical process of oscillation of the system elements by means of the oscillation amplitude, but also the time of response to the oscillation process by using and assessing the triggering time rather than the frequencies of the oscillation processes.

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Digitalization and Reliability of Railway Vehicles and Tracks—Condition Monitoring and Condition-based Maintenance

Maierhofer,

Gänser,

Daves

et al. 2024

Berg Huettenmaenn Monatsh

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Use of Surface Acoustic Waves for Crack Detection on Railway Track Components—Laboratory Tests

Cited by 4 publications

References 12 publications

Effect of Cyclic Loading on the Surface Microstructure Evolution in the Pearlitic Rail

Effect of Cyclic Loading on the Surface Microstructure Evolution in the Pearlitic Rail

Investigation of Dynamic Processes of Rolling Stock–Track Interaction: Experimental Realization

Digitalization and Reliability of Railway Vehicles and Tracks—Condition Monitoring and Condition-based Maintenance

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