熱溶解積層法により造形されたポリ乳酸の力学的特性に及ぼす積層構成の影響

抄録

Additive manufacturing (AM) technology is a forming method that does not require molds and can create complex shapes as a single unit. Fused deposition modeling (FDM) is a most popular AM technology because the molding equipment is inexpensive. It has been reported that the mechanical properties of objects formed by FDM depend on the layering configuration. In order to estimate the mechanical properties of specimens formed by FDM using lamination theory, the effect of lamination configuration on the mechanical properties was investigated in this study. As a result, the lamination configurations in which the printing direction was at an angle to the loading direction, such as [90]₂₂, [±45]₁₁, and [0/60/120]₇, were significantly deformed due to the rotation of the filaments within the specimen. The tensile strength of [0/90]₁₁ and [±45]₁₁ was higher than that of [0]₂₂. Therefore, the mechanical properties may be increased by aligning the printing direction with the loading direction and by having layers printed in different directions.