Effect of residual stresses on the fatigue lifetime of railway axle

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F17%3APU129728" target="_blank" >RIV/00216305:26210/17:PU129728 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2452321617300902" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2452321617300902</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.prostr.2017.07.005" target="_blank" >10.1016/j.prostr.2017.07.005</a>

Result language

angličtina

Original language name

Effect of residual stresses on the fatigue lifetime of railway axle

Original language description

The operation of railway axles should fulfill at least two main demands: safety and low operation costs. A significant part of operation costs is given by the length of regular inspection intervals which should reveal potential fatigue cracks in railway axle. The detection of cracks is of a probabilistic nature, therefore their detection is not ensured in all cases. For the safe operation of trains, an existence of potential initial crack should be considered on the axle surface and residual fatigue lifetime should be conservatively determined for this case. Reliable procedure of residual fatigue lifetime estimation should take into account real axle geometry, material characteristics and loading of the railway axle. This paper shows methodology for determination of residual fatigue lifetime (RFL) based on the fracture mechanics approach, taking into account real spectrum of the loading cycles, existence of press-fitted wheels and surface residual stresses given by the thermo-mechanical surface treatment of the railway axle. It is demonstrated that the effect of the residual stresses is significant and should not be neglected in the numerical estimation of residual fatigue lifetime of the axle.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20301 - Mechanical engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Procedia Structural Integrity

ISSN

2452-3216

e-ISSN

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Volume of the periodical

4

Issue of the periodical within the volume

2017

Country of publishing house

IT - ITALY

Number of pages

6

Pages from-to

42-47

UT code for WoS article

000418401700006

EID of the result in the Scopus database

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