Experimental and Numerical Visualisation of Subsurface Rail Deformation in a Full-Scale Wheel–Rail Test Rig

Gschwandl, Timna J.; Weniger, Tristan M.; Antretter, Thomas; Künstner, David; Scheriau, Stephan; Daves, Werner

doi:10.3390/met13061089

Cited by 3 publications

(1 citation statement)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When a rolling contact fatigue test machine with different diameters of rail and wheel specimens is used in RCF tests, the cyclic plastic behavior of the investigated materials plays a significant role, especially under high contact pressures. Various effects of actual wheel/rail contact can also be studied analytically and numerically [31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Two Contributions to Rolling Contact Fatigue Testing Considering Different Diameters of Rail and Wheel Discs

Šmach,

Halama,

Marek

et al. 2023

Lubricants

View full text Add to dashboard Cite

Scaled rolling contact fatigue tests, used to practically simulate the wear of the wheel and rail material under laboratory conditions, are typically classified into two categories. Tests in the first category use twin-disc stands, while the second group of test rigs use two discs of different diameters considering the rail disc as the larger one. The latter setup is closer to the real situation, but problems can occur with high contact pressures and tractions. The focus of this paper is on two main contributions. Firstly, a case study based on finite element analysis is presented, allowing the optimization of the specimen geometry for high contact pressures. Accumulated plastic deformation caused by cycling is responsible for abrupt lateral deformation, which requires the use of an appropriate cyclic plasticity model in the finite element analysis. In the second part of the study, two laser profilers are used to measure the dimensions of the specimen in real time during the rolling contact fatigue test. The proposed technique allows the changes in the specimen dimensions to be characterized during the test itself, and therefore does not require the test to be interrupted. By using real-time values of the specimen’s dimensional contours, it is possible to calculate an instantaneous value of the slip ratio or the contact path width.

show abstract

Section: Introductionmentioning

confidence: 99%

Two Contributions to Rolling Contact Fatigue Testing Considering Different Diameters of Rail and Wheel Discs

Šmach,

Halama,

Marek

et al. 2023

Lubricants

View full text Add to dashboard Cite

show abstract

Evaluating the impact of rail surface roughness post-grinding: An experimental and elastoplastic modelling approach

Edjeou,

Moström,

Asplund

et al. 2025

Tribology International

View full text Add to dashboard Cite

Simulation and Experimental Research of V-Crack Testing of Rail Surfaces Based on Laser Ultrasound

Lian,

Du,

Xie

et al. 2024

Photonics

View full text Add to dashboard Cite

Rail surface cracks are widespread damage that can lead to uneven surfaces of railheads and affect traveling safety. Non-destructive testing is needed to inspect rails regularly to ensure the normal operation of railroads. This paper proposes a laser ultrasonic testing method combining variational mode decomposition and diffractive Rayleigh wave time-of-flight to detect tiny cracks on the rail surface quantitatively. The finite element method was combined with experiments to simulate and experimentally investigate cracks of different sizes numerically. In the numerical simulation, the location of the crack was determined by B-scan. Afterward, the interaction between various types of ultrasound and cracks was comparatively analyzed, and the crack size was quantitatively characterized using useful information from the ultrasound signals. The results show that the time-of-flight method can detect arbitrary cracks with low error. Therefore, the experimentally acquired ultrasound signals used the time difference between the diffracted Rayleigh wave and other ultrasound waves to detect the crack information quantitatively. The variational mode decomposition method was used to separate the ultrasonic signals and extract the best surface wave modes to improve the signal-to-noise ratio. The results show that the combination of variational mode decomposition and time-of-flight method can effectively detect the size of cracks.

show abstract

Experimental and Numerical Visualisation of Subsurface Rail Deformation in a Full-Scale Wheel–Rail Test Rig

Cited by 3 publications

References 33 publications

Two Contributions to Rolling Contact Fatigue Testing Considering Different Diameters of Rail and Wheel Discs

Two Contributions to Rolling Contact Fatigue Testing Considering Different Diameters of Rail and Wheel Discs

Evaluating the impact of rail surface roughness post-grinding: An experimental and elastoplastic modelling approach

Simulation and Experimental Research of V-Crack Testing of Rail Surfaces Based on Laser Ultrasound

Contact Info

Product

Resources

About