DD CEN/TS 843-6:2004

Foreword
1 Scope
2 Normative references
3 Terms and definitions
  3.1 General terms
  3.2 Terms classifying inherently volume-distributed fracture
      origins
  3.3 Terms classifying inherently surface-distributed fracture
      origins
  3.4 Terms classifying features on fracture surfaces
4 Significance and use
5 Apparatus
  5.1 Preparation and cleaning facilities
  5.2 Observational facilities
6 Recommended procedure
  6.1 Outline
  6.2 Specimen storage and cleaning of fracture surfaces
  6.3 Visual inspection
  6.4 Optical microscope examination
  6.5 Identification of major fracture surface features
  6.6 Scanning electron microscope examination
  6.7 Identification of fracture origin
  6.8 Identification of chemical inhomogeneity at fracture origin
  6.9 Drawing conclusions
7 Report
Annex A (informative) Crack patterns in ceramic bodies
Annex B (informative) Examples of general features of fracture
        surfaces
Annex C (informative) Examples of procedure for fracture origin
        identification
      C.1 Single large pores
      C.2 Agglomerates
      C.3 Large grains
      C.4 Compositional inhomogeneities
      C.5 Delaminations
      C.6 Handling damage
      C.7 Machining damage
      C.8 Oxidation pitting
      C.9 Complex origins
      C.10 No obvious origins
Annex D (informative) Use of fracture mechanical information to aid
        fractography
      D.1 Fracture stress and origin size
      D.2 Fracture stress and fracture mirror size
Annex E (informative) Example layout of reporting pro-forma
Bibliography

Provides guidelines to be adopted when evaluating the appearance of the fracture surface of an advanced technical ceramic.