NF B41-220-3*NF EN 14425-3:2010 Advanced technical ceramics - Test methods for determination of fracture toughness of monolithic ceramics - Part 3 : chevron notched beam (CNB) method.
2010NF B41-220-3*NF EN 14425-3:2010 Advanced technical ceramics - Test methods for determination of fracture toughness of monolithic ceramics - Part 3 : chevron notched beam (CNB) method.