Publication detail

Can a Pure Mode III Fatigue Loading Contribute to Crack Propagation in Metallic Materials?

POKLUDA, J. PIPPAN, R.

Czech title

Může prostý únavový zátěžný mód III přispívat k šíření trhliny v kovových materiálech?

English title

Can a Pure Mode III Fatigue Loading Contribute to Crack Propagation in Metallic Materials?

Type

journal article - other

Language

en

Original abstract

The possibility of a pure mode III crack growth is analyzed on the background of theoretical and experimental results achieved in the last 20 years. Unlike for modes I and II, there is no plausible micromechanistic model explaining a pure mode III crack growth in ductile metals. In order to realize plain mode III fracture surface, we propose a propagation of a series of pure mode II cracks along the crack front. Fractographical observations on crack initiation and propagation in a low alloy steel under cyclic torsion support such a model. The authors do not see any clear indication of a pure mode III crack growth micromechanism in metals till now.

Czech abstract

Může prostý únavový zátěžný mód III přispívat k šíření trhliny v kovových materiálech?

English abstract

The possibility of a pure mode III crack growth is analyzed on the background of theoretical and experimental results achieved in the last 20 years. Unlike for modes I and II, there is no plausible micromechanistic model explaining a pure mode III crack growth in ductile metals. In order to realize plain mode III fracture surface, we propose a propagation of a series of pure mode II cracks along the crack front. Fractographical observations on crack initiation and propagation in a low alloy steel under cyclic torsion support such a model. The authors do not see any clear indication of a pure mode III crack growth micromechanism in metals till now.

Keywords in English

crack growth, pure mode III, ductile metals, crack front, cyclic torsion

RIV year

2005

Released

01.01.2005

ISSN

8756-758X

Journal

Fatigue & Fracture of Engineering Materials & Structures

Volume

28

Pages from–to

179–186

Pages count

8

BIBTEX


@article{BUT45573,
  author="Jaroslav {Pokluda} and Reinhard {Pippan},
  title="Can a Pure Mode III Fatigue Loading Contribute to Crack Propagation in Metallic Materials?",
  journal="Fatigue & Fracture of Engineering Materials & Structures",
  year="2005",
  volume="28",
  month="January",
  pages="179--186",
  issn="8756-758X"
}