scholarly journals X-Ray Texture Analysis on Cyclic Shearring Deformation due to Rolling Contact Fatigue

2004 ◽  
Vol 53 (3) ◽  
pp. 300-305 ◽  
Author(s):  
Kenji KASHIWAYA ◽  
Yukio SATOH
Keyword(s):  
Texture Analysis ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
X Ray

Service Loading Analysis of Wind Turbine Gearbox Rolling Bearings Based on X-Ray Diffraction Residual Stress Measurements

2013 ◽  
Vol 768-769 ◽  
pp. 723-732 ◽  
Author(s):  
Jürgen Gegner ◽  
Wolfgang Nierlich
Keyword(s):  
Residual Stress ◽  
Wind Turbine ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
X Ray Diffraction ◽  
Rolling Bearings ◽  
Wind Turbine Gearbox ◽  
X Ray ◽  
Stress Measurements

Rolling bearings in wind turbine gearboxes occasionally fail prematurely by so-called white etching cracks. The appearance of the damage indicates brittle spontaneous tensile stress induced surface cracking followed by corrosion fatigue driven crack growth. An X-ray diffraction based residual stress analysis reveals vibrations in service as the root cause. The occurrence of high local friction coefficients in the rolling contact is described by a tribological model. Depth profiles of the equivalent shear and normal stresses are compared with residual stress patterns and a relevant fracture strength, respectively. White etching crack failures are reproduced on a rolling contact fatigue test rig under increased mixed friction. Causative vibration loading is evident from residual stress measurements. Cold working compressive residual stresses are an effective countermeasure.

Evaluation of Railway Rails Suffered from Rolling Contact Fatigue Using X-Ray Generalized cosα Method

2018 ◽  
Vol 941 ◽  
pp. 2378-2383
Author(s):  
Toshihiko Sasaki
Keyword(s):  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Full Width ◽  
Half Maximum ◽  
Diffraction Ring ◽  
X Ray ◽  
Depth Direction

In this study, the diffraction rings were measured point by point all over the head of rail sample which was used in service, and shearing stresses with respect to the depth direction were determined using the generalized cosα method. The full width at half maximum was also estimated from the diffraction ring.

Evaluation of Rolling Contact Fatigue Using X-Ray Diffraction Ring

2016 ◽  
pp. MPC20150027 ◽  
Author(s):  
Takumi Fujita ◽  
Naoya Kamura ◽  
Yoichi Maruyama ◽  
Toshihiko Sasaki
Keyword(s):  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
X Ray Diffraction ◽  
Diffraction Ring ◽  
X Ray

Reconstruction of the rolling contact fatigue cracks in rails using X-ray computed tomography

2017 ◽  
Vol 92 ◽  
pp. 199-212 ◽  
Author(s):  
Meysam Naeimi ◽  
Zili Li ◽  
Zhiwei Qian ◽  
Yu Zhou ◽  
Jun Wu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Fatigue Cracks ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
X Ray ◽  
X Ray Computed

scholarly journals X-ray Fourier Analysis on Rolling Contact Fatigue Layer Formed in Rail

2015 ◽  
Vol 56 (1) ◽  
pp. 15-20
Author(s):  
Motohide MATSUI ◽  
Yoshikazu KANEMATSU ◽  
Yuji KAMIYA ◽  
Naoki MATSUMOTO
Keyword(s):  
Fourier Analysis ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
X Ray

scholarly journals X-Ray Diffraction Residual Stress Measurements for Assessment of Rolling Contact Fatigue Behaviour of Railway Steels

2014 ◽  
Vol 996 ◽  
pp. 782-787 ◽  
Author(s):  
António Castanhola Batista ◽  
Joao P. Nobre ◽  
Daniel F.C. Peixoto ◽  
Luis A.A. Ferreira ◽  
Paulo M.S.T. de Castro ◽  
...  
Keyword(s):  
Residual Stress ◽  
Cyclic Loading ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Fatigue Behaviour ◽  
Rolling Contact ◽  
X Ray Diffraction ◽  
X Ray ◽  
Before And After ◽  
Stress Profiles

Rolling contact fatigue twin-disc tests were performed on rail/wheel steels from Spanish high velocity trains (AVE). Residual stress profiles were determined using X-ray diffraction before and after cyclic loading. The evolution of residual stress profiles, due to cyclic loading, was analysed in order to study how they affect the rolling contact fatigue behaviour of these materials. This study is included in a major project where other related phenomena and materials’ properties have been studied.

scholarly journals Effect of Quenching Temperature on Microstructure and Rolling Contact Fatigue Behavior of 17Cr2Ni2MoVNb Steel

Metals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 735 ◽  
Author(s):  
Yalong Zhang ◽  
Shengguan Qu ◽  
Fuqiang Lai ◽  
Haidi Qin ◽  
Liman Huang ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Failure Mode ◽  
Fatigue Behavior ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Microscopic Analysis ◽  
Optical Microscope ◽  
Rolling Contact ◽  
Quenching Temperature ◽  
X Ray

17Cr2Ni2MoVNb steel is a new type of gear steel in the automotive industry; the rolling contact fatigue behavior is not well documented. In this study, some microscopic analysis methods (optical microscope (OM), scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffractometer (XRD), and energy dispersive X-ray analysis (EDS)) were used to characterize material microstructure and damage surface. In addition, rolling contact fatigue behavior was evaluated by Weibull curve. The results show that the size of austenite grain increased while the quenching temperature increased. Moreover, the samples with a quenching temperature of 1000 °C exhibited the maximum mean life of 7.33 × 105 cycles. In addition, the failure mode of quenched at 900 °C and 1100 °C were delamination, and pitting was the main failure mode of 1000 °C.

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