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BS EN 843-1:2006

BS EN 843-1:2006

Current

Current

The latest, up-to-date edition.

Advanced technical ceramics. Mechanical properties of monolithic ceramics at room temperature Determination of flexural strength

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-31-2007

Publisher

British Standards Institution

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Significance and use
5 Apparatus
  5.1 Test jig
  5.2 Test machine
  5.3 Micrometer or alternative calibrated device
  5.4 Travelling microscope
  5.5 Humidity measuring device
6 Test pieces
  6.1 General
  6.2 Dimensions and tolerances
  6.3 Surface finish
  6.4 Number of test pieces
  6.5 Precautions
7 Procedure
8 Calculations
9 Test report
Annex A (informative) Typical fracture patterns
        in ceramic test pieces
Bibliography

Describes methods for determining the nominal flexural strength of advanced monolithic technical ceramic materials at ambient temperature. The available loading geometries are three- and four-point flexure, using rectangular section test pieces of two prescribed geometries: 20 mm support span (A) and 40 mm support span (B).

This part of EN 843 specifies methods for determining the nominal flexural strength of advanced monolithic technical ceramic materials at ambient temperature. The available loading geometries are three- and four-point flexure, using rectangular section test pieces of two prescribed geometries: 20 mm support span (A) and 40 mm support span (B). NOTE This part of EN 843 differs from ISO 14704 (see Bibliography) in respect of span A (not included in the ISO version), the absence of the 30 mm span option, and the required use of a fully articulating test jig. The test applies to materials with grain size less than 200 µm. The test prescribes four categories of surface finish applied to the test pieces: I: as-fired or annealed after machining; II: standard finishing by grinding; III: standard finishing by lapping/polishing; IV: machined using agreed grinding procedures and material removal rates.

Committee
RPI/13
DevelopmentNote
Supersedes 92/45075 DC (09/2005) Supersedes 04/30125782 DC (01/2007)
DocumentType
Standard
Pages
24
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
UNI EN 843-1 : 2007 Identical
SN EN 843-1 : 2007 Identical
NEN EN 843-1 : 2007 Identical
NS EN 843-1 : 2ED 2006 Identical
EN 843-1:2006 Identical
NBN EN 843-1 : 2007 Identical
I.S. EN 843-1:2006 Identical
UNE-EN 843-1:1996 Identical
NF EN 843-1 : 2007 Identical
DIN EN 843-1:2008-08 Identical

DD ENV 843-3:1997 Advanced technical ceramics. Monolithic ceramics. Mechanical properties at room temperature Determination of subcritical crack growth parameters from constant stressing rate flexural strength tests
DD ENV 843-2:1996 Advanced technical ceramics. Monolithic ceramics. Mechanical properties at room temperature Determination of elastic moduli

ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
MIL-HDBK-790 Base Document:1992 FRACTOGRAPHY AND CHARACTERIZATION OF FRACTURE ORIGINS IN ADVANCED
EN 623-4:2004 Advanced technical ceramics - Monolithic ceramics - General and textural properties - Part 4: Determination of surface roughness
EN 843-5:2006 Advanced technical ceramics - Mechanical properties of monolithic ceramics at room temperature - Part 5: Statistical analysis
ISO 4677-1:1985 Atmospheres for conditioning and testing Determination of relative humidity Part 1: Aspirated psychrometer method
ASTM C 1322 : 2015 : REDLINE PRACTICE FOR FRACTOGRAPHY AND CHARACTERIZATION OF FRACTURE ORIGINS IN ADVANCED CERAMICS
ISO 14704:2016 Fine ceramics (advanced ceramics, advanced technical ceramics) Test method for flexural strength of monolithic ceramics at room temperature
ISO 3611:2010 Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for external measurements — Design and metrological characteristics
ISO 7500-1:2015 Metallic materials Calibration and verification of static uniaxial testing machines Part 1: Tension/compression testing machines Calibration and verification of the force-measuring system
CEN/TS 843-6 : 2004 ADVANCED TECHNICAL CERAMICS - MONOLITHIC CERAMICS - MECHANICAL PROPERTIES AT ROOM TEMPERATURE - PART 6: GUIDANCE FOR FRACTOGRAPHIC INVESTIGATION
ISO 4677-2:1985 Atmospheres for conditioning and testing Determination of relative humidity Part 2: Whirling psychrometer method

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