Influence of Crack Retardation on Fatigue Crack Propagation in Steels for Railway Axles

Luboš Náhlík; Pavel Pokorný; Pavel Hutař

doi:10.4028/www.scientific.net/AMR.891-892.351

Paper Titles

Fatigue Crack Growth Behavior in the Threshold Region
p.327

Crack Growth Threshold Criterion Based on Calculation of Dynamic Stress Intensity Factors in the Mixed Mode (Complex Functions Theory Approach)
p.333

Influence of the Inclusion Type on the Threshold Value of Failure in the VHCF-Regime of High-Strength Steels
p.339

Comparison of SGBEM-FEM Alternating Method and XFEM Method for Determining Stress Intensity Factor for 2D Crack Problems
p.345

Influence of Crack Retardation on Fatigue Crack Propagation in Steels for Railway Axles
p.351

Investigations on the Fatigue Crack Propagation Threshold in Very High Cycle Fatigue
p.357

J-Integral Approach to Creep-Fatigue Crack Propagation in Lead-Free Solder under Various Loading Waveforms
p.365

Determination of Creep Crack Growth Threshold by Experiments under Elevated Temperature with Pre-Stressed Specimens
p.371

Low Cycle Fatigue Behavior and Mechanism of Newly Developed Advanced Heat Resistant Austenitic Stainless Steels at High Temperature
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 891-892Influence of Crack Retardation on Fatigue Crack...

Influence of Crack Retardation on Fatigue Crack Propagation in Steels for Railway Axles

Abstract:

The railway axles are subjected to cyclic loading, therefore there is a risk of fatigue failure. For reason that possible crack could not be detected by non-destructive testing method an existing crack in the railway axle must be considered. This is conservative approach commonly used in applications where potential fatigue failure has unaccepted consequences. This paper deals with retardation effect caused by overload cycles and compares results obtained by no retardation approach and results obtained by generalized Willenborg model, which takes into account the retardation effects due to plastic zone around the crack tip. Results obtained can contribute to the better understanding of fatigue crack behavior in railway axles.

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Periodical:

Advanced Materials Research (Volumes 891-892)

Pages:

351-356

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.891-892.351

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Online since:

March 2014

Authors:

Luboš Náhlík*, Pavel Pokorný, Pavel Hutař

Keywords:

Crack Retardation, Fatigue Crack, Generalized Willenborg Model, Railway Axle

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