ISO DIS 17541

Abstract

This international standard deals with quantitative evaluation of scratch-induced damage and scratch visibility in polymers. <br>This international standard specifies two methods to assess scratch damage and visibility expressed by three color coordinates of a 3-D color model. <br>Method A uses a scratch tip capable of area-contact or line-contact with material surfaces under a constant load condition. It is represented by Scratch Damage Index (SDI). <br>Method B uses a scratch tip capable of line-contact under a linearly increasing load condition. It is represented by Scratch Visibility Index (SVI). <br>The methods are suitable for use with coated and uncoated thermoplastic and thermosetting moulding materials. <br>The methods specify the preferred dimensions of testing specimens and the preferred scratch-tip geometry.