NF EN ISO 23146

NF EN ISO 23146

June 2016
Standard Current

Fine ceramics (advanced ceramics, advanced technical ceramics) - Test methods for fracture toughness of monolithic ceramics - Single-edge V-notch beam (SEVNB) method

ISO 23146:2012 specifies a method for the determination of the fracture toughness of advanced technical ceramics. The procedure makes use of single-edge V-notched bars, which are loaded in four-point bending until failure. It is applicable to monolithic ceramics with a grain size or major microstructural feature size larger than about 1 µm.The use of ISO 23146:2012 for yttria tetragonal zirconia polycrystal material (Y-TZP) is not recommended. The method might also be unsuitable for some other very tough or soft ceramics in which a sharp crack does not form at the root of the V-notch.

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Main informations

Collections

National standards and national normative documents

Publication date

June 2016

Number of pages

23 p.

Reference

NF EN ISO 23146

ICS Codes

81.060.30   Advanced ceramics

Classification index

B43-212

Print number

1

International kinship

ISO 23146:2012

European kinship

EN ISO 23146:2016
Sumary
Fine ceramics (advanced ceramics, advanced technical ceramics) - Test methods for fracture toughness of monolithic ceramics - Single-edge V-notch beam (SEVNB) method

ISO 23146:2012 specifies a method for the determination of the fracture toughness of advanced technical ceramics. The procedure makes use of single-edge V-notched bars, which are loaded in four-point bending until failure. It is applicable to monolithic ceramics with a grain size or major microstructural feature size larger than about 1 µm.

The use of ISO 23146:2012 for yttria tetragonal zirconia polycrystal material (Y-TZP) is not recommended. The method might also be unsuitable for some other very tough or soft ceramics in which a sharp crack does not form at the root of the V-notch.

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Principe
  • 5 Appareillage
  • 6 Préparation des éprouvettes
  • 7 Méthode d'essai
  • 8 Fidélité et biais
  • 9 Rapport d'essai
  • Annexe A Affûtage des entailles à la machine
  • Annexe B Évaluation interlaboratoires des méthodes SEVNB d'essai de ténacité à la rupture
  • Annexe C Corrections relatives à la longueur réelle de la fissure plus élevée que la profondeur de l'entaille
  • Bibliographie
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