Publication detail

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.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

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

Authors

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

Released

1. 3. 2021

Publisher

MDPI

Location

BASEL

ISBN

2075-4701

Periodical

Metals

Year of study

11

Number

3

State

Swiss Confederation

Pages from

1

Pages to

20

Pages count

20

URL

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

Full text in the Digital Library

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"
}