Relationship between the Lower Limit of the Spatial Frequency Band of a Surface Texture and the Subjective Evaluation of Roughness

Abstract

While performance and functionality are required as the quality of products, in recent years, texture and aesthetics have been attracting attention in order to differentiate products from those of other companies, and the demand for tactile design of products has been increasing. However, it takes a lot of time and money to make prototypes and conduct tactile evaluations. Therefore, it would be useful to estimate the tactile sensation from the 3D coordinates obtained from the 3D model at the design stage. In this study, we focused on the spatial frequency of the texture and investigated the effect of bandwidth variation on the subjective evaluation of roughness, with the aim of quantifying the roughness feeling based on the shape information of the texture. The results of the subjective evaluation of roughness showed that the low-frequency component of the texture may not contribute to the roughness perception.