Community Research and Development Information Service - CORDIS

  • European Commission
  • Publications
  • Flexure tests of four-point-bend specimens with Chevron notches to study the fracture toughness and to determine da/dt versus K(I) curves in ceramics


Fracture toughness can be characterised by the critical stress intensity factor K(Ic). For ceramics, its determination according to ASTM : E 399-72, regardless of cost, is very complex. The utilisation of specimen geometries which permit stable crack growth have become popular. Good examples are the tests using Chevron notch specimens, which also allow the determination of da/dt versus K(I) curves.

Additional information

Authors: SARAIVA MARTINS C, JRC Petten (NL);GUERRA ROSA L, Instituto Superior Técnico, Lisboa (PT)
Bibliographic Reference: Paper presented: 4as Jornadas de Fractura, Lisboa (PT), Oct. 1991
Availability: Available from (1) as Paper PT 36500 ORA
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top