Fused deposition modeling (FDM) has been the preferred technology in 3D printing due to its ability to build functional complex geometry parts. The lack of the printing parameter information and prediction model that directly reflects towards 3D printed part's mechanical properties has been a barrier for the FDM 3D printer users to appraise the product's strength as a whole. In the present work, 27 tensile specimens with different parameter combinations were printed using a low-cost FDM 3D printer according to the ASTM standard to evaluate their tensile properties. Statistical analysis was performed using MINITAB to validate the experimental data and model development. The investigational outcomes reveal that ultimate tensile strength was primarily affected by infill density, whereby it increases with increasing infill density. Elastic modulus, fracture strain, and toughness were mainly affected by infill density and layer thickness. The ideal printing parameter for optimal tensile behavior was identified to be 0.3 mm layer height, 40° raster angle, and 80% infill density from the 9th combination. The tensile values obtained for the optimal printing parameter were 28.45150 MPa for ultimate tensile strength, 0.08012 mm/mm for fracture strain, 828.06000 MPa for elastic modulus, 20.19923 MPa for yield strength, and 1.72182 J/m³ for toughness. The statistical analysis further affirmed the optimum printing has a minimal deviation from the experimental response. Finally, a mathematical model is proposed for the tensile properties prediction.

熔融沉积建模（FDM）由于能够构建功能复杂的几何图形零件而成为3D打印的首选技术。缺少直接反映3D打印部件机械性能的打印参数信息和预测模型，一直是FDM 3D打印机用户评估产品整体强度的障碍。在当前工作中，根据ASTM标准，使用低成本FDM 3D打印机打印了27个具有不同参数组合的拉伸试样，以评估其拉伸性能。使用MINITAB进行统计分析以验证实验数据和模型开发。研究结果表明，极限抗拉强度主要受填充密度的影响，从而随填充密度的增加而增加。弹性模量，断裂应变和韧性主要受填充密度和层厚度的影响。根据第9种组合，确定最佳拉伸性能的理想印刷参数为0.3毫米的层高，40°的光栅角和80％的填充密度。为获得最佳印刷参数而获得的拉伸值为极限拉伸强度为28.45150 MPa，断裂应变为0.08012 mm / mm，弹性模量为828.06000 MPa，屈服强度为20.19923 MPa和1.72182 J / m³韧性。统计分析进一步肯定了最佳印刷与实验响应的偏差最小。最后，提出了一种用于拉伸性能预测的数学模型。