This study presents a novel approach to predict the fatigue life of plain and notched polylactide (PLA) components 3D-printed with different in-fill levels. The proposed method models 3D-printed PLA with manufacturing voids as a continuous, homogeneous, linear-elastic, isotropic material weakened by equivalent cracks that scale with the size of the voids. This allows for accurate estimation of both plain material strength and notched component fatigue life, considering various in-fill levels.

中文翻译：

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一种新的基于临界距离的均质材料方法，用于估计具有不同填充水平的普通/缺口聚丙交酯 3D 打印的疲劳寿命


本研究提出了一种新方法来预测具有不同填充水平的 3D 打印的普通和缺口聚丙交酯 （PLA） 组件的疲劳寿命。所提出的方法将 3D 打印的 PLA 建模，其中制造空隙是一种连续、均匀、线弹性、各向同性材料，其强度会随着空隙的大小而缩放。这样可以准确估计普通材料强度和缺口组件疲劳寿命，同时考虑各种填充水平。