Application of the Nonlinear Fatigue Damage Cumulative on the Prediction for Rail Head Checks Initiation and Wear Growth

2019 ◽  
pp. 239-244
Author(s):  
Y. Zhou ◽  
D. S. Mu ◽  
Y. B. Han ◽  
X. W. Huang ◽  
C. C. Zhang
Keyword(s):  
Fatigue Damage ◽  
Rail Head

Fatigue Analysis of the Rail Underhead Radius under High Axle Load Conditions

2014 ◽  
Vol 891-892 ◽  
pp. 1181-1187 ◽  
Author(s):  
Sagheer Abbas Ranjha ◽  
Peter J. Mutton ◽  
Ajay Kapoor
Keyword(s):  
Tensile Stress ◽  
Fatigue Damage ◽  
Fatigue Behaviour ◽  
The Finite Element Method ◽  
Rail Head ◽  
Stress Peak ◽  
Heat Treated ◽  
Heavy Haul ◽  
Contact Position ◽  
Load Conditions

An evaluation of the potential risk of fatigue damage at the rail underhead radius (UHR) due to the occurrence of a short duration tensile stress peak, as a wheel passes over, has been examined. The tensile stress peak is mainly due to the localised bending of the rail head-on-web and its magnitude is associated with the contact position, lateral and vertical forces and rail head wear (HW). The stresses at the underhead radius have been explored using the finite element method (FEM). The Dang Van (DV) criterion, implemented as a customised computer programme, was used to identify the fatigue damage at the UHR. Fatigue behaviour under heavy haul conditions was compared for heat-treated low alloy, euctectoid and hypereutectoid rail grades in order to predict allowable rail head wear limits.

An evaluation of fatigue damage gages

1967 ◽  
Author(s):  
R. MATLOCK
Keyword(s):  
Fatigue Damage

Fatigue damage accumulation around notches

2004 ◽  
Vol 46 (6) ◽  
pp. 309-313
Author(s):  
Yutaka Iino ◽  
Hideo Yano
Keyword(s):  
Fatigue Damage ◽  
Damage Accumulation ◽  
Fatigue Damage Accumulation

3D Characterization of Thermal Fatigue Damage in Monofilament Reinforced Copper for Heat Sink Applications in Fusion Reactor Systems

2012 ◽  
Vol 49 (5) ◽  
pp. 278-289
Author(s):  
M. Schöbel ◽  
H.P. Degischer ◽  
A. Brendel ◽  
B. Harrer ◽  
M. Di Michiel
Keyword(s):  
Fatigue Damage ◽  
Thermal Fatigue ◽  
Heat Sink ◽  
Fusion Reactor

Оценка реальной чувствительности приемочного ультразвукового контроля рельсов

2020 ◽  
pp. 17-27
Author(s):  
А.А. Шелухин
Keyword(s):  
Ultrasonic Pulse ◽  
Piezoelectric Transducers ◽  
Acoustic Path ◽  
Metallic Inclusion ◽  
Inclusion Type ◽  
The Real ◽  
Rail Head ◽  
Pulse Echo

In this article, the analysis of the acoustic path during the ultrasonic pulse echo testing of the rail head in production is carried out. The influence of the parameters of the applied piezoelectric transducers on the distribution of sensitivity for the sounding scheme used in the existing installations is estimated and the real sensitivity of detecting defects of the «non-metallic inclusion» type is estimated.

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