Detail publikace

Effect of the free surface on the fatigue crack front curvature at high stress asymmetry

OPLT, T. HUTAŘ, P. POKORNÝ, P. NÁHLÍK, L. CHLUP, Z. BERTO, F.

Originální název

Effect of the free surface on the fatigue crack front curvature at high stress asymmetry

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The purpose of this paper is to investigate the effect of the vertex singularity on the fatigue crack front behaviour. Single edge notch bend specimens of steel EA4T and aluminium alloy 7075 of various thicknesses are subjected to the cyclic loading and the angles of the fatigue crack front curvature was measured. The experimental procedure is simulated using finite element analysis. Two methodologies used for the fatigue crack front shape estimation are compared. One is using stress singularity exponent as a controlling parameter and the second one is using stress intensity factor. Both methodologies provide comparable results of crack front formation process and they are in very good agreement with experimental results.

Klíčová slova

Stress intensity factor; Vertex singularity; Free surface; Fatigue crack front; Finite elements

Autoři

OPLT, T.; HUTAŘ, P.; POKORNÝ, P.; NÁHLÍK, L.; CHLUP, Z.; BERTO, F.

Vydáno

22. 8. 2018

Nakladatel

ELSEVIER SCI LTD

Místo

THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND

ISSN

0142-1123

Periodikum

INTERNATIONAL JOURNAL OF FATIGUE

Ročník

118

Číslo

2019

Stát

Spojené království Velké Británie a Severního Irska

Strany od

249

Strany do

261

Strany počet

13

URL

https://www.sciencedirect.com/science/article/pii/S0142112318304080?via%3Dihub

BibTex

@article{BUT156362,
  author="Tomáš {Oplt} and Pavel {Hutař} and Pavel {Pokorný} and Luboš {Náhlík} and Zdeněk {Chlup} and Filippo {Berto}",
  title="Effect of the free surface on the fatigue crack front curvature at high stress asymmetry",
  journal="INTERNATIONAL JOURNAL OF FATIGUE",
  year="2018",
  volume="118",
  number="2019",
  pages="249--261",
  doi="10.1016/j.ijfatigue.2018.08.026",
  issn="0142-1123",
  url="https://www.sciencedirect.com/science/article/pii/S0142112318304080?via%3Dihub"
}