Detail publikace

Advantageous Description of Short Fatigue Crack Growth Rates in Austenitic Stainless Steels with Distinct Properties

TRÁVNÍČEK, L. KUBĚNA, I. MAZÁNOVÁ, V. VOJTEK, T. POLÁK, J. HUTAŘ, P. ŠMÍD, M.

Originální název

Advantageous Description of Short Fatigue Crack Growth Rates in Austenitic Stainless Steels with Distinct Properties

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

In this work two approaches to the description of short fatigue crack growth rate under large-scale yielding condition were comprehensively tested: (i) plastic component of the J-integral and (ii) Polak model of crack propagation. The ability to predict residual fatigue life of bodies with short initial cracks was studied for stainless steels Sanicro 25 and 304L. Despite their coarse microstructure and very different cyclic stress-strain response, the employed continuum mechanics models were found to give satisfactory results. Finite element modeling was used to determine the J-integrals and to simulate the evolution of crack front shapes, which corresponded to the real cracks observed on the fracture surfaces of the specimens. Residual fatigue lives estimated by these models were in good agreement with the number of cycles to failure of individual test specimens strained at various total strain amplitudes. Moreover, the crack growth rates of both investigated materials fell onto the same curve that was previously obtained for other steels with different properties. Such a "master curve" was achieved using the plastic part of J-integral and it has the potential of being an advantageous tool to model the fatigue crack propagation under large-scale yielding regime without a need of any additional experimental data.

Klíčová slova

short fatigue crack; large scale yielding; low cycle fatigue; J-integral; austenitic stainless steel; residual lifetime prediction

Autoři

TRÁVNÍČEK, L.; KUBĚNA, I.; MAZÁNOVÁ, V.; VOJTEK, T.; POLÁK, J.; HUTAŘ, P.; ŠMÍD, M.

Vydáno

1. 3. 2021

Nakladatel

MDPI

Místo

BASEL

ISSN

2075-4701

Periodikum

Metals

Ročník

11

Číslo

3

Stát

Švýcarská konfederace

Strany od

1

Strany do

20

Strany počet

20

URL

https://www.mdpi.com/2075-4701/11/3/475

Plný text v Digitální knihovně

http://hdl.handle.net/11012/203244

BibTex

@article{BUT172857,
  author="Lukáš {Trávníček} and Ivo {Kuběna} and Veronika {Mazánová} and Tomáš {Vojtek} and Jaroslav {Polák} and Pavel {Hutař} and Miroslav {Šmíd}",
  title="Advantageous Description of Short Fatigue Crack Growth Rates in Austenitic Stainless Steels with Distinct Properties",
  journal="Metals",
  year="2021",
  volume="11",
  number="3",
  pages="1--20",
  doi="10.3390/met11030475",
  issn="2075-4701",
  url="https://www.mdpi.com/2075-4701/11/3/475"
}