Additive manufacturing technologies are positioned to provide an unprecedented innovative transformation in how products are designed and manufactured. Due to differences in the technical specifications of AM technologies, the final fabricated parts can vary significantly from the original CAD models, therefore raising issues regarding accuracy, surface finish, robustness, mechanical properties, functional and geometrical constraints. Various researchers have studied the correlation between AM technologies and design rules. In this work we propose a novel approach to assessing the capability of a 3D model to be printed successfully (a.k.a printability) on a specific AM machine. This is utilized by taking into consideration the model mesh complexity and certain part characteristics. A printability score is derived for a model in reference to a specific 3D printing technology, expressing the probability of obtaining a robust and accurate end result for 3D printing on a specific AM machine. The printability score can be used either to determine which 3D technology is more suitable for manufacturing a specific model or as a guide to redesign the model to ensure printability. We verify this framework by conducting 3D printing experiments for benchmark models which are printed on three AM machines employing different technologies: Fused Deposition Modeling (FDM), Binder Jetting (3DP), and Material Jetting (Polyjet).

中文翻译：

---

3D 可打印性的表征

增材制造技术旨在为产品的设计和制造方式提供前所未有的创新变革。由于增材制造技术的技术规格存在差异，最终制造的零件可能与原始 CAD 模型有很大不同，因此会出现精度、表面光洁度、坚固性、机械性能、功能和几何约束等问题。许多研究人员已经研究了 AM 技术与设计规则之间的相关性。在这项工作中，我们提出了一种新方法来评估在特定 AM 机器上成功打印 3D 模型的能力（也称为可打印性）。这是通过考虑模型网格复杂性和某些零件特性来利用的。参考特定 3D 打印技术得出模型的可打印性分数，表示在特定 AM 机器上获得稳健和准确的 3D 打印最终结果的可能性。可印刷性分数可用于确定哪种 3D 技术更适合制造特定模型，或作为重新设计模型以确保可印刷性的指南。我们通过对使用不同技术的三台 AM 机器打印的基准模型进行 3D 打印实验来验证该框架：熔融沉积建模 (FDM)、粘合剂喷射 (3DP) 和材料喷射 (Polyjet)。可印刷性分数可用于确定哪种 3D 技术更适合制造特定模型，或作为重新设计模型以确保可印刷性的指南。我们通过对使用不同技术的三台 AM 机器打印的基准模型进行 3D 打印实验来验证该框架：熔融沉积建模 (FDM)、粘合剂喷射 (3DP) 和材料喷射 (Polyjet)。可印刷性分数可用于确定哪种 3D 技术更适合制造特定模型，或作为重新设计模型以确保可印刷性的指南。我们通过对使用不同技术的三台 AM 机器打印的基准模型进行 3D 打印实验来验证该框架：熔融沉积建模 (FDM)、粘合剂喷射 (3DP) 和材料喷射 (Polyjet)。