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

Comment end date 2026-02-19

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Project stage codes

1. Decision on WI Proposal

2. Projektas

3. Viešoji apklausa

From 2025-12-21 till 2026-02-19

4. Closure of enquiry

5. Submission to Formal Vote

Organisation

CEN Europos standartizacijos komitetas

ICS

81.060.30 - Advanced ceramics

ForeignTC'S

CEN/TC 184

Number of comments

Comment start date

2025-12-21

Scope

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.

Relations

Pakeis

prEN ISO 23146