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B. J. Kim(김범준),J. H. Lee(이정환),I. S. Sohn(손일선),T. H. Lee(이태홍) Korean Society for Precision Engineering 2021 한국정밀공학회 학술발표대회 논문집 Vol.2021 No.11월
In the future, 3D printing technology is expected to increase the possibility of being directly applied to mass production, that is, commercial product production beyond the prototype area. This trend has already been introduced and tried in various industries such as the automobile industry, aviation, and medical fields. There is a need for a lot of research on the development of these technologies. Therefore, this study focused on the evaluation of the mechanical strength of the product according to the change of the filling rate under the 3D printing lamination condition, considering the commercialization of parts by the FDM method, which is the most widely used in the 3D printing field. To achieve the purpose, the study focused on evaluating tensile behavior by fabricating tensile specimens with filling factor and lamination thickness as variables. For this, the filling factor of the laminated cross-section was calculated using an optical microscope and the correlation was investigated by comparing it with the tensile strength.