Publication detail
The Effect of the Free Surface on the Singular Stress Field at the Fatigue Crack Front
OPLT, T. POKORNÝ, P. NÁHLÍK, L. HUTAŘ, P.
English title
The Effect of the Free Surface on the Singular Stress Field at the Fatigue Crack Front
Type
journal article in Scopus
Language
en
Original abstract
Description of stress singularity in the vicinity of a free surface is presented. Its presence causes the retardation of the fatigue crack growth in that region and fatigue crack is being curved. Numerical model is used to study dependence of the stress singularity exponent on Poisson’s ratio. Estimated values are compared to those already published. Experimentally measured angles of fatigue crack on SENB specimens confirm the relation between Poisson’s ratio and the angle between crack front and free surface.
English abstract
Description of stress singularity in the vicinity of a free surface is presented. Its presence causes the retardation of the fatigue crack growth in that region and fatigue crack is being curved. Numerical model is used to study dependence of the stress singularity exponent on Poisson’s ratio. Estimated values are compared to those already published. Experimentally measured angles of fatigue crack on SENB specimens confirm the relation between Poisson’s ratio and the angle between crack front and free surface.
Keywords in English
fatigue crack; stress singularity exponent; vertex singularity; crack front shape
Released
22.11.2017
Publisher
De Gruyter Open
Location
Slovenská republika
ISSN
2450-5471
Volume
67
Number
2
Pages from–to
69–76
Pages count
8
BIBTEX
@article{BUT142135,
author="Tomáš {Oplt} and Pavel {Pokorný} and Luboš {Náhlík} and Pavel {Hutař},
title="The Effect of the Free Surface on the Singular Stress Field at the Fatigue Crack Front",
year="2017",
volume="67",
number="2",
month="November",
pages="69--76",
publisher="De Gruyter Open",
address="Slovenská republika",
issn="2450-5471"
}