scholarly journals Variation of Flaw Echo Height at Wheel Seat of Hollow Railway Axle in Cyclic Rotating Bending

2013 ◽  
Vol 6 (1) ◽  
pp. 41-53
Author(s):  
Kazunari MAKINO ◽  
Shiro BIWA ◽  
Hiroshi SAKAMOTO
Keyword(s):  
Railway Axle ◽  
Rotating Bending

Estimation of Crack Depth and Profile Using DCPD Method in Full Scale Railway Axle Loaded by Rotating Bending

2015 ◽  
Vol 732 ◽  
pp. 171-174 ◽  
Author(s):  
Ivo Černý
Keyword(s):  
Direct Current ◽  
Crack Depth ◽  
Potential Drop ◽  
Full Scale ◽  
Circumferential Crack ◽  
Railway Axle ◽  
Relevant Point ◽  
Rotating Bending ◽  
Bending Loading ◽  
Current Potential

The paper contains results of a study aimed at exploring possibilities of use of direct current potential drop (DCPD) method for evaluation of depth and profile of cracks occurred under or near press fitted hubs in a full-scale axle during severe rotating bending loading. DCPD method was applied on section of an axle after fatigue by a specific way and potentials were measured in several circumferential areas of the axle section, when direct current passed longitudinally. Results are analysed and discussed. It was indicated that unlike previous use of the method for crack measurement of different components, even large and complicated, described in the literature, when potentials corresponded to ratio of cracked and uncracked area, in this case of approximately circumferential crack, measured potentials correspond better to relative crack depth in the relevant point of the circumference.

scholarly journals Retardation of Fatigue Crack Growth in Rotating Bending Specimens with Semi-Elliptical Cracks

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 156 ◽  
Author(s):  
Martin Leitner ◽  
David Simunek ◽  
Jürgen Maierhofer ◽  
Hans-Peter Gänser ◽  
Reinhard Pippan
Keyword(s):  
Fatigue Crack ◽  
Crack Growth ◽  
Constant Amplitude ◽  
Cycle Number ◽  
Bending Tests ◽  
Railway Axle ◽  
Delay Cycle ◽  
Rotating Bending ◽  
Growth Assessment ◽  
Elliptical Cracks

This work investigates overload-induced retardation effects for semi-elliptically cracked steel round bars. The specimen geometry equals the shaft area of a 1:3 down-scaled railway axle and the material is extracted from railway axle blanks made of EA4T steel. Rotating bending tests under constant amplitude loading as well as overload tests considering overload ratios of ROL = 2.0 and ROL = 2.5 are conducted. The experimental results are compared to a crack growth assessment based on a modified NASGRO equation as well as the retardation model by Willenborg, Gallagher, and Hughes. The evaluated delay cycle number due to the overload by the experiments and the model shows a sound agreement validating the applicability of the presented approach.

On a New Rotating Bending Fatigue Testing Machine

1966 ◽  
Vol 15 (148) ◽  
pp. 49-54
Author(s):  
Minoru KAWAMOTO ◽  
Katsumi SUMIHIRO ◽  
Koji KIDA
Keyword(s):  
Fatigue Testing ◽  
Testing Machine ◽  
Bending Fatigue ◽  
Rotating Bending Fatigue ◽  
Rotating Bending

A FAST ROTATING BENDING FATIGUE TEST MACHINE

2017 ◽  
Author(s):  
Marco Antonio Meggiolaro ◽  
Jaime T P Castro ◽  
Rodrigo de Moura Nogueira
Keyword(s):  
Fatigue Test ◽  
Test Machine ◽  
Bending Fatigue ◽  
Bending Fatigue Test ◽  
Rotating Bending Fatigue ◽  
Rotating Bending ◽  
Fast Rotating

scholarly journals Effects of segment-structured DLC film on the fretting wear of railway axle journal bearings

2019 ◽  
Vol 6 (1) ◽  
pp. 18-00446-18-00446 ◽  
Author(s):  
Yoshiaki OKAMURA ◽  
Daisuke SUZUKI ◽  
Kazuki IKOMA ◽  
Takafumi NAGATOMO ◽  
Hiroshi UTSUNOMIYA
Keyword(s):  
Journal Bearings ◽  
Fretting Wear ◽  
Dlc Film ◽  
Railway Axle

Prediction of fatigue strength of micro-specimen on copper and aluminium alloys under rotating bending load

2020 ◽  
Author(s):  
Haftirman ◽  
Teguh Prioyono ◽  
Muhammad Kholil ◽  
Dinalant Al Tanggaraju ◽  
Mohd Arif Anuar Mohd Salleh ◽  
...  
Keyword(s):  
Fatigue Strength ◽  
Aluminium Alloys ◽  
Bending Load ◽  
Rotating Bending

scholarly journals Static Analysis of Railway Axle using Finite Element Method and Monitoring of Railway Bearing Based on Vibration Analysis

2021 ◽  
Vol 1845 (1) ◽  
pp. 012037
Author(s):  
B Asngali ◽  
A Susanto ◽  
M F Subkhan ◽  
I Martinez ◽  
K Yamada ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Static Analysis ◽  
Vibration Analysis ◽  
Railway Axle ◽  
Element Method

A Study onP-S-NCurve for Rotating Bending Fatigue Test for Bearing Steel

2008 ◽  
Vol 51 (2) ◽  
pp. 166-172 ◽  
Author(s):  
Katsuji Tosha ◽  
Daisuke Ueda ◽  
Hirokazu Shimoda ◽  
Shigeo Shimizu
Keyword(s):  
Fatigue Test ◽  
Bearing Steel ◽  
Bending Fatigue ◽  
Bending Fatigue Test ◽  
Rotating Bending Fatigue ◽  
Rotating Bending

The Strain Analysis at the Broadening Stage of the Hollow Railway Axle by Multi-Wedge Cross Wedge Rolling

2014 ◽  
Vol 494-495 ◽  
pp. 457-460 ◽  
Author(s):  
Bin Hu ◽  
Xue Dao Shu ◽  
Peng Hui Yu ◽  
Wen Fei Peng
Keyword(s):  
Production Efficiency ◽  
Strain Analysis ◽  
Cross Wedge Rolling ◽  
Forming Process ◽  
Element Analysis ◽  
Forming Mechanism ◽  
Railway Axle ◽  
The Finite Element Analysis ◽  
Scientific Significance ◽  
Deform 3D

The paper is based on the newest hollow railway axle, which utilizes the Pro/E designed multi-wedge cross wedge rolling (MCWR) model, utilizes the finite element analysis software DEFORM-3D to complete the numerical simulation about the whole stage of the hollow railway axle forming process, and analyzes the strain rule at the broadening stage of the hollow railway axle, especially conducts a detailed research on forming character into the strain rule at the multi-wedge transition stage, and finally gets the strain forming mechanism of the hollow railway axle at the broadening stage. The result of the research on the strain rule poses great scientific significance on enhancing the product quality and the production efficiency of the hollow railway axle, and improving the theory of multi-wedge cross wedge rolling.

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