Publication detail

On the Crack Closure Effect in Metallic Nanomaterials

POKLUDA, J. ŠANDERA, P.

Original Title

On the Crack Closure Effect in Metallic Nanomaterials

Type

conference paper

Language

English

Original Abstract

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.

Keywords

crack closure, nanomaterials, fatigue threshold, crack wake plasticity

Authors

POKLUDA, J.; ŠANDERA, P.

RIV year

2005

Released

1. 1. 2005

Publisher

Vutium

Location

Brno

ISBN

80-214-3085-0

Book

Nano 05

Edition

1

Edition number

1

Pages from

213

Pages to

218

Pages count

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"
}