[PDF] Top 20 Measuring wheel/rail contact stresses using ultrasound

Measuring wheel/rail contact stresses using ultrasound

... single contact from the worn specimens, with Figure 7b showing the twin contact also ...twin contact patch occurred when the rail specimen was moved toward the flange fillet area of the ... See full document

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An ultrasonic sensor for monitoring wheel flange/rail gauge corner contact

... flange contact using an ultrasonic sensor mounted on the ...approach, using ultrasonic ray-tracing software, was used to determine the best location for the ...of wheel and ...the ... See full document

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Experimental characterization of wheel-rail contact patch evolution

... the contact area, with the amplitude of the reflected ultrasonic pulse recorded at ...the wheel and rail were not in ...the ultrasound is reflected from the steel-air interface at this ...the ... See full document

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Wheel/Rail Contact Isolation Due to Track Contamination

... the measuring technique used and that actually all peaks should go to the open circuit value (one particle entrainment may happen too fast to be picked up when sampling data at ...in contact isolation seen ... See full document

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Analytical Approach to Vibration Analysis Of the Wheel-rail contact

... to contact loading, where large stresses are applied over highly localized ...the contact of a cylinder rolling over a periodically varying surface ...pure contact one and the dynamics of the ... See full document

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Contact Force Estimation in the Railway Vehicle Wheel Rail Interface

... the wheel and rail geometric and wear characteristics, perhaps as part of a homologation ...load measuring wheels which is the current ...the wheel tread, wear of the rail head and it ... See full document

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The Influence of Wheel/Rail Contact Conditions on the Microstructure and Hardness of Railway Wheels

... 2.4. Region D: Running Band (Centre of the Wheel Tread). This portion of both leading and trailing wheels is used when running on straight track, which is the most common running condition. The trailing wheelset ... See full document

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Measuring the wheel-rail forces of a roller coaster

... the wheel are also mostly generated by the track geometry ...the wheel loads of the measurement are higher than the simulated ...simulated wheel load is closer to the measured ...upstop wheel ... See full document

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Download Download PDF

... system using Doppler effect (Jose Brizuela, Ibañez, Nevado, & Fritsch, ...the wheel-rail contact is analysed by frequency and phase ...special rail and any difference between ... See full document

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Simulation of Railroad Crack Growth Life under the Influence of Combination of Mechanical Contact and Thermal Loads

... the contact between the wheel and rail, ANSYS software with three-dimensional elastic-plastic finite element model is ...The wheel is modeled with a diameter of 920mm and UIC60 rail ... See full document

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Robust control for independently rotating wheelsets on a railway vehicle using practical sensors

... the wheel-rail contact mechanics upon the dynamics of each ...flange contact occurs. The paper uses the linearized models of the wheel-rail contact mechanics exclu- sively ... See full document

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Design and optimisation of wheel rail profiles for adhesion improvement

... the wheel-rail profiles are optimised to improve the general adhesion conditions across the contact points of the wheels, but it is possible to optimise the profiles differently, ...the ... See full document

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Contact Analysis of the Two Dimensional Wheel-Rail Based on Finite Element Method

... the contact area of wheel - rail, σ x is compressive stress, and the maximum compressive stress occurs near the center of the contact point of wheel ...the contact point, the ... See full document

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Multiple model based real time estimation of wheel rail contact conditions

... Multiple Model Based Identification of the Wheel-Rail Contact Condition for Traction and Braking Control I Hussain 1 , TX Mei2 and Mohammad Mirzapur 3 School of Computing, Science and En[r] ... See full document

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Stresses in a grinding wheel

... The material of the circle is considered as isotopic with averaged value of a shear modulus. The mean value of a shear modulus is calculated by the method offered by Feucht. The radial force is added at a point at a ... See full document

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Modelling the Dynamic Behaviour of the Wheel Rail Interface by Using a Novel 3D Wheel Rail Contact Model

... 3-D wheel-rail contact model which is used for dynamic simulation of a suspended wheelset with parameters listed for a typical Mark IV ...The contact point locations on the wheel and ... See full document

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Integrating Dynamics and Wear Modelling to Predict Railway Wheel Profile Evolution

... initial wheel and rail profiles, a wear sequence reproducing the vehicle mission profile is simulated using the multi-body vehicle ...global contact parameters (position of contacts, resulting ... See full document

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Wheel–rail contact: experimental study of the creep forces–creepage relationships

... the wheel-rail contact problem in the dynamic behaviour of railway vehicles has led to the publications of different mathematical developments that tackle this problem mainly from a purely ... See full document

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Reducing the Diameter of Freight Vehicle Wheels – The Suitability of Q/D as a Control for Wheel Rail Contact Stress

... minimum wheel diameter of freight vehicles operating on GB ...Hertzian contact stress and contact stress driven damage, within the scope of a national ...lateral wheel profile shape would ... See full document

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The Influence of Extrusion Ratio on Contact Stresses and Die Elastic Deformations in the Case of Cold Backward Extrusion

... In cold extrusion processes, the tool set is exposed to high contact stresses, which, in certain cases, may be limiting factors in applying this technology [3]. This is especially true for extruded steel ... See full document

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