Purpose3D printing is gaining attention in the medical sector for the development of customized solutions for a wide range of applications such as temporary external implants The materials used for the manufacturing process are critical, as they must provide biocompatibility and adequate mechanical properties This study aims to evaluate and model the influence of the printing parameters on the mechanical properties of two biocompatible materials Design/methodology/approachIn this study, the mechanical properties of 3D-printed specimens of two biocompatible materials (ABS medical and PLActive) were evaluated The influence of several printing parameters (infill density, raster angle and layer height) was studied and modelled on three response variables: ultimate tensile strength, deformation at the ultimate tensile strength and Young’s modulus Therefore, statistical models were developed to predict the mechanical responses based on the selected printing parameters FindingsThe used methodology allowed obtaining compact models that show good fit, particularly, for both the ultimate tensile strength and Young’s modulus Regarding the deformation at ultimate tensile strength, this output was found to be influenced by more factors and interactions, resulting in a slightly less precise model In addition, the influence of the printing parameters was discussed in the work Originality/valueThe presented paper proposed the use of statistical models to select the printing parameters (infill density, raster angle and layer height) to optimize the mechanical response of external medical aids The models will help users, researchers and firms to develop optimized solutions that can reduce material costs and printing time but guaranteeing the mechanical response of the parts

中文翻译：

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3D 打印外部医疗辅助设备机械性能的统计模型

目的 3D 打印在医疗领域越来越受到关注，用于为广泛的应用开发定制解决方案，例如临时外部植入物 用于制造过程的材料至关重要，因为它们必须提供生物相容性和足够的机械性能 本研究旨在评估并模拟打印参数对两种生物相容性材料机械性能的影响设计/方法/途径在本研究中，评估了两种生物相容性材料（ABS 医疗和 PLActive）的 3D 打印标本的机械性能几个打印参数的影响（填充密度、光栅角和层高）被研究并建模为三个响应变量：极限拉伸强度、极限拉伸强度和杨氏模量下的变形因此，开发了统计模型来预测基于所选印刷参数的机械响应结果所使用的方法允许获得显示良好拟合的紧凑模型，特别是对于极限拉伸强度和杨氏模量极限拉伸强度下的变形，发现该输出受更多因素和相互作用的影响，导致模型精度稍低此外，在工作原创性/价值中讨论了印刷参数的影响。用于选择打印参数（填充密度、光栅角度和层高）的统计模型，以优化外部医疗辅助设备的机械响应 该模型将帮助用户，研究人员和公司开发优化的解决方案，以降低材料成本和打印时间，同时保证零件的机械响应