Publication result detail

Fatigue crack propagation in thin structures

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

Original Title

Fatigue crack propagation in thin structures

English Title

Fatigue crack propagation in thin structures

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

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.

English abstract

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.

Keywords

Fatigue crack, vertex singularity, thin structures

Key words in English

Fatigue crack, vertex singularity, thin structures

Authors

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

RIV year

2012

Released

01.10.2010

Publisher

TTP

Location

Švýcarsko

ISBN

1013-9826

Periodical

Key Engineering Materials (print)

Volume

417-418

Number

xxx

State

Swiss Confederation

Pages from

257

Pages to

260

Pages count

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"
}