- 재료 압출 방식 3D 프린팅에서 비대칭 적층 경로의 적층을 통한 인장 강도 향상
The deposition strength of material extrusion type 3D printed article is greatly influenced by the tool path. In this study, a 3D printed tensile specimen was fabricated with an asymmetric tool path and its tensile properties were analyzed. As a result of the experiment, specimen with asymmetric tool path based on 15° reference tool path showed higher tensile strength than that of the 0° reference tool path. In addition, specimen with asymmetric tool path based on 45° reference tool path showed the lowest tensile strength. After the tensile test, the fractured specimen was observed to determine the relationship between the tool path and tensile strength. In 3D printing, it was confirmed that higher tensile strength than the bulk tensile strength of the material can be obtained through the control of the asymmetric tool path.