ThisInternationalStandarddealswithquantitativeevaluationofscratch–induceddamageandscratchvisibilityinpolymers.

ThisInternationalStandardspecifiestwomethodstoassessscratchdamageandscratchvisibilityexpressedbythreecolourcoordinatesofa3-Dcolourmodel.

MethodAusesascratchtipcapableofarea-contactorline-contactwithmaterialsurfacesunderaconstantloadcondition. Itisrepresentedbyscratchdamageindex (SDI).

MethodBusesascratchtipcapableofline-contactunderalinearlyincreasingloadcondition. Itisrepresentedbyscratchvisibilityindex (SVI).

Themethodsaresuitableforusewithcoatedanduncoatedthermoplasticandthermosettingmouldingmaterials.

Themethodsspecifythepreferreddimensionsoftestingspecimensandthepreferredscratch-tipgeometry.