Publication result 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.

Original Title

The Effect of the Free Surface on the Singular Stress Field at the Fatigue Crack Front

English Title

The Effect of the Free Surface on the Singular Stress Field at the Fatigue Crack Front

Type

Scopus Article

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

fatigue crack; stress singularity exponent; vertex singularity; crack front shape

Key words in English

fatigue crack; stress singularity exponent; vertex singularity; crack front shape

Authors

OPLT, T.; POKORNÝ, P.; NÁHLÍK, L.; HUTAŘ, P.

RIV year

2018

Released

22.11.2017

Publisher

De Gruyter Open

Location

Slovenská republika

ISBN

2450-5471

Periodical

Journal of Mechanical Engineering - Strojnícky časopis

Volume

67

Number

2

State

Slovak Republic

Pages from

69

Pages to

76

Pages count

8

URL

http://www.degruyter.com/view/j/scjme.2017.67.issue-2/scjme-2017-0019/scjme-2017-0019.xml?format=INT

Full text in the Digital Library

http://hdl.handle.net/11012/184115

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",
  journal="Journal of Mechanical Engineering - Strojnícky časopis",
  year="2017",
  volume="67",
  number="2",
  pages="69--76",
  doi="10.1515/scjme-2017-0019",
  issn="2450-5471",
  url="http://www.degruyter.com/view/j/scjme.2017.67.issue-2/scjme-2017-0019/scjme-2017-0019.xml?format=INT"
}

Documents

scjme-2017-0019