scope:

Specifies the principles for determining the fracture toughness of plastics in the crack-opening mode (mode I) under defined conditions. Two test methods with cracked specimens are defined, namely three-point-bending tests and compact-specimen tensile tests in order to suit different types of equipment available or different types of material. The methods are suitable for use with the following range of materials: - rigid and semi-rigid thermoplastic moulding, extrusion and casting materials; - rigid and semi-rigid thermosetting moulding and casting materials.