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Proceedings 2018, 2(8), 470; https://doi.org/10.3390/ICEM18-05373

Influence of Micro-Structure on the Fatigue Crack Propagation in Bridge Steel

1
Institute of Physics of Materials, Academy of Science of the Czech Republic, Zizkova 22 Brno 616 62, Czech Republic
2
Faculty of Civil Engineering, Brno University of Technology, Veveri 331/95 Brno 602 00, Czech Republic
Presented at the 18th International Conference on Experimental Mechanics (ICEM18), Brussels, Belgium, 1–5 July 2018.
*
Author to whom correspondence should be addressed.
Published: 19 June 2018
PDF [4805 KB, uploaded 28 June 2018]

Abstract

The use of high strength steels (HSS) allows designing lighter, slenderer and simpler structures with high structural performance. In general, the use of HSS leads to weight reduction of the whole structure, which compensates the higher cost of such a material comparing to the conventional construction steels. Knowledge of the fatigue resistance of material plays the key role during design and maintenance of the bridge structures. This contribution brings a comparison of the fatigue crack growth resistance of S355 J0 steel. Differences in microstructure and the texture of material structure could generally play a role in the fatigue crack growth. This study shows that in the case of studied steel texture of material structure has an influence on material fatigue behavior in Paris’ law regime.
Keywords: bridge steel; Paris’ law; microstructure; stress intensity factor; fatigue properties; S355 J0 bridge steel; Paris’ law; microstructure; stress intensity factor; fatigue properties; S355 J0
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Seitl, S.; Miarka, P.; Pokorný, P.; Fintová, S.; Klusák, J. Influence of Micro-Structure on the Fatigue Crack Propagation in Bridge Steel. Proceedings 2018, 2, 470.

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