Detail publikačního výsledku

Fatigue crack propagation in thin structures

HUTAŘ, P.; SEITL, S.; NÁHLÍK, L.; KNÉSL, Z.

Originální název

Fatigue crack propagation in thin structures

Anglický název

Fatigue crack propagation in thin structures

Druh

Článek recenzovaný mimo WoS a Scopus

Originální abstrakt

The influence of specimen thickness on fatigue crack behaviour has been investigated. To this aim the fatigue crack propagation rate has been measured on two different types of test specimens with varying thickness. The change of stress singularity exponent for the crack front due to vicinity of the free surface is considered. To explain the effect of stress singularity changes on obtained experimental results a methodology based on generalized stress intensity factor and strain energy density concept has been used. It is shown that for materials with Poissons ratio of about 0.3 the free surface effect does not play a decisive role for specimens with a low level of in-plane constraint but can influence fatigue crack propagation rate in the case of geometries with a high level of the constraint.

Anglický abstrakt

The influence of specimen thickness on fatigue crack behaviour has been investigated. To this aim the fatigue crack propagation rate has been measured on two different types of test specimens with varying thickness. The change of stress singularity exponent for the crack front due to vicinity of the free surface is considered. To explain the effect of stress singularity changes on obtained experimental results a methodology based on generalized stress intensity factor and strain energy density concept has been used. It is shown that for materials with Poissons ratio of about 0.3 the free surface effect does not play a decisive role for specimens with a low level of in-plane constraint but can influence fatigue crack propagation rate in the case of geometries with a high level of the constraint.

Klíčová slova

Fatigue crack, vertex singularity, thin structures

Klíčová slova v angličtině

Fatigue crack, vertex singularity, thin structures

Autoři

HUTAŘ, P.; SEITL, S.; NÁHLÍK, L.; KNÉSL, Z.

Rok RIV

2012

Vydáno

01.10.2010

Nakladatel

TTP

Místo

Švýcarsko

ISSN

1013-9826

Periodikum

Key Engineering Materials (print)

Svazek

417-418

Číslo

xxx

Stát

Švýcarská konfederace

Strany od

257

Strany do

260

Strany počet

4

BibTex

@article{BUT50811,
  author="Pavel {Hutař} and Stanislav {Seitl} and Luboš {Náhlík} and Zdeněk {Knésl}",
  title="Fatigue crack propagation in thin structures",
  journal="Key Engineering Materials (print)",
  year="2010",
  volume="417-418",
  number="xxx",
  pages="257--260",
  issn="1013-9826"
}