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"
}