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.
Anglický 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
en
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.
Anglický 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 anglicky
Stress intensity factor; Vertex singularity; Free surface; Fatigue crack front; Finite elements
Vydáno
22.08.2018
Nakladatel
ELSEVIER SCI LTD
Místo
THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
ISSN
0142-1123
Ročník
118
Číslo
2019
Strany od–do
249–261
Počet stran
13
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",
year="2018",
volume="118",
number="2019",
month="August",
pages="249--261",
publisher="ELSEVIER SCI LTD",
address="THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND",
issn="0142-1123"
}