Abstract
The purpose of this study is to present an evaluating method of scratch resistance of finishing materials from a viewpoint of visual perception. The results of this study is as follows. 1) A scratching apparatus was newly designed and produced which can give scratching effect to the surfaces of finishing materials under conditions similar to actual circumstances. 2) Two sensory scales which indicate the degree of scratch were composed on two sets of scratched samples by means of sensory test. One set of samples were made by actual human scratching, and other set of samples were made by the scratching apparatus. The validity of the apparatus was verified from the high correlation between two scales. 3) Physical quantity properly corresponding to the sensory scales was extracted from the analysis of color difference and gloss data of the samples. 4) An evaluating method of scratch resistance of finishing materials was presented, with an evaluating index based on the relation between an evaluating scale of scratch and the physical quantity, and with a scratching method of object materials.
