고투광성 유약과 이중 경계 기술 적용을 통한 고해상도 질감 디자인 개발

Abstract

The purpose of this study is to apply a hemp texture to the ceramic surface in order to produce a distinctive design of pottery which reflects Korean culture and environments. A Hemp fabric structure is made from weft and warp yarns by using the spinning wheel. The more the yarn is wound, the finer its texture becomes. If a closely-woven hemp fabric is applied directly to the surface of pottery, the hemp texture will be changed in the compression molding process and become dull due to the thickness and devitrification of glaze, which is hard to achieve a fine texture of hemp. In this study, a high resolution pottery design was developed through the application of highly transparent glaze and double boundary technology. The glaze combination was conducted by using UMF and the quality of glaze was tested at sintering under oxidization condition of 1300℃. The brilliance, chromaticity, surface profile, Vickers hardness, brittleness were derived from the analysis of test specimen. The change in chroma according to glaze application ratio was compared with the change in the height of the convex part and surfacing process of texture. When the silica concentration was 4.5, the most appropriate glaze of high resolution was formed. Then, the brilliance of glaze was 72.04GU, the Vickers hardness was 7.14GPa, and brittleness was 86.62 ㎛-1/2. In order to establish 3D digital information with an actual hemp texture pattern, 3D scanner was used to collect the initial digital data and convert them into digital files through the compensation via noise reduction and reverse engineering in the process of scanning. The digital file was designed into double boundary design to obtain the optimum texture and uniform application of glaze as a 3D software and prototypes and samples were manufactured with 3D printers. The height of the convex part which has been applied with double boundary technology was compared with the surfacing application rate. The result shows that the glaze indicates the highest chroma at 100% and the application rate of 50% rate is more effective to enhance three dimensional aesthetic sense. At the final pottery prototype, it was confirmed that a hemp texture would be the optimum material and design technology which expresses the three dimensional texture of the surface of pottery well based on thermal stability of clays and glazes.