Influence of different crack propagation rate descriptions on the residual fatigue lifetime of railway axles

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F15%3APU111301" target="_blank" >RIV/00216305:26210/15:PU111301 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.627.469" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.627.469</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.627.469" target="_blank" >10.4028/www.scientific.net/KEM.627.469</a>

Result language

angličtina

Original language name

Influence of different crack propagation rate descriptions on the residual fatigue lifetime of railway axles

Original language description

The paper deals with an estimation of the residual fatigue lifetime of the railway axles. The railway axles can include some cracks either from manufacturing process or from previous loading operation. Because of cyclic loading of the railway axles there is a risk of fatigue failure of the railway axles with unacceptable consequences. Based on this fact, for conservative establishment of the residual fatigue lifetime of the railway axle is necessary to consider an existing crack in the railway axle during design process. The fatigue lifetime estimation of railway axles is very sensitive to used crack propagation rate description (e.g. v-K curve). Typical bending of this curve (knee) can be found in the vicinity of the threshold value in fatigue crack propagation rate dependence (typically v-K curve expressed in log-log coordinates). For accurate estimation of residual fatigue lifetime of the railway axle is necessary to use approximation of v-K curve that takes into account existence of the knee close to the threshold value of the stress intensity factor. The paper shows important differences between different crack propagation rate descriptions on the residual fatigue lifetime estimation of the railway axles. Results obtained can be used for safer design and operation of the railway axles.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

20306 - Audio engineering, reliability analysis

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2015

Confidentiality

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

Name of the periodical

Key Engineering Materials (print)

ISSN

1013-9826

e-ISSN

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Volume of the periodical

627

Issue of the periodical within the volume

627

Country of publishing house

CH - SWITZERLAND

Number of pages

4

Pages from-to

469-472

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-84913582078