Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Razor blades
5.2 Diamond paste
5.3 Lubricant
5.4 Test piece support
5.5 Flexural strength test jig
5.6 Mechanical testing machine
5.7 Ultrasonic cleaning bath
5.8 Micrometer
5.9 Microscope
5.10 Notch measuring device
5.11 Drying oven
5.12 Diamond slitting saw
6 Test piece preparation
6.1 Number of test pieces
6.2 Test-piece dimensions
6.3 Preparing the V-notch by hand
6.4 Preparing the V-notches by machine (optional)
7 Test procedure
7.1 Determination of notch root radius
7.2 Dimensions of test-piece
7.3 Flexural strength test
7.4 Measurement of notch depth
7.5 Calculation of fracture toughness
8 Precision and bias
9 Test report
Annex A (informative) Notch honing by machine
Annex B (informative) Interlaboratory evaluation of the SEVNB
fracture toughness test procedures
Bibliography