Detail publikačního výsledku

On the Crack Closure Effect in Metallic Nanomaterials

POKLUDA, J.; ŠANDERA, P.

Originální název

On the Crack Closure Effect in Metallic Nanomaterials

Anglický název

On the Crack Closure Effect in Metallic Nanomaterials

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Asymmetric arrangements of stored crack-wake dislocations and low values of the size ratio SR, the plastic zone size divided by the characteristic microstructural distance, were found to be of basic importance for the misfit of crack flanks causing the roughness-induced crack closure. According to newly derived formulae including these effects, an estimation of a maximum level of roughness-induced crack closure can be made for metallic materials in the near threshold crack growth regime. On the basis of statistical considerations, the assessments can be extended for the whole fatigue crack propagation regime. A negligible level of roughness-induced crack closure in nanomaterials is predicted as a partial result of the statistical analysis.

Anglický abstrakt

Asymmetric arrangements of stored crack-wake dislocations and low values of the size ratio SR, the plastic zone size divided by the characteristic microstructural distance, were found to be of basic importance for the misfit of crack flanks causing the roughness-induced crack closure. According to newly derived formulae including these effects, an estimation of a maximum level of roughness-induced crack closure can be made for metallic materials in the near threshold crack growth regime. On the basis of statistical considerations, the assessments can be extended for the whole fatigue crack propagation regime. A negligible level of roughness-induced crack closure in nanomaterials is predicted as a partial result of the statistical analysis.

Klíčová slova

crack closure, nanomaterials, fatigue threshold, crack wake plasticity

Klíčová slova v angličtině

crack closure, nanomaterials, fatigue threshold, crack wake plasticity

Autoři

POKLUDA, J.; ŠANDERA, P.

Vydáno

01.01.2005

Nakladatel

Vutium

Místo

Brno

ISBN

80-214-3085-0

Kniha

Nano 05

Edice

1

Strany od

213

Strany do

218

Strany počet

6

BibTex

@inproceedings{BUT16266,
  author="Jaroslav {Pokluda} and Pavel {Šandera}",
  title="On the Crack Closure Effect in Metallic Nanomaterials",
  booktitle="Nano 05",
  year="2005",
  series="1",
  number="1",
  pages="213--218",
  publisher="Vutium",
  address="Brno",
  isbn="80-214-3085-0"
}