ČSN EN ISO 24370   (727542) Jemná keramika (speciální keramika, speciální technická keramika) - Zkušební metoda lomové houževnatosti monolitické keramiky při pokojové teplotě metodou trámečku se zářezem chevron (CNB)

Anotace textu normy ČSN EN ISO 24370   (727542)

This Standard specifies a test method for determining the fracture toughness of monolithic ceramic materials at room temperature by the chevron-notched beam (CNB) method. This Standard is applicable to monolithic ceramics and whisker- or particulate-reinforced ceramics that are regarded as macroscopically homogeneous. It is not applicable to continuous-fibre reinforced ceramic composites. This Standard is usually applicable to ceramic materials with a fracture toughness less than about

12 MPa(m1/2). The test method is applicable to materials with a flat crack-growth resistance curve and may be applicable to materials with a rising crack-growth resistance curve (R-curve).