적층각도에 따른 FDM공정으로 제작된 시편의 압축/충격 특성 변화 분석

Abstract

Melt lamination process, depending on the characteristics Floor laminate Out-of-Plane so the mechanical properties of the products according to the angle of inclination between the inclination of the laminated stack and the bottom face surface differ during lamination. Using a small three-dimensional printers in the MOJO FDM manner, it was produced by compressing the laminate angle / impact test specimens. Compression test and the impact test was performed according to ASTM D 695 and ASTM D 256 respectively. A compression test results stack tilt angle 0, 60, and also the compression of the specimen 90 was found to be the dominant tensile breakage. However, the laminate angle of inclination of 30 degree and 45 degree compression specimens of shear failure occurred. Charpy impact test result of the laminated inclined angle increases, the specimen was found to decrease the fracture toughness value. In addition, if the inclination angle is increased fracture more stacked from 0 to 90 degrees was found to be the fracture mode changes from ductile fracture to brittle fracture. This results from the inclination angle in the three-dimensional printing process of the laminate FDM scheme could be considered as the quantitative effect on the mechanical properties of the product.