Vidakis Nectarios, Petousis Markos, Mountakis Nikolaos, Moutsopoulou Amalia, Karapidakis Emmanuel
Department of Mechanical Engineering, Hellenic Mediterranean University, 71410 Heraklion, Greece.
Electrical and Computer Engineering Department, Hellenic Mediterranean University, 71410 Heraklion, Greece.
Polymers (Basel). 2023 Feb 8;15(4):845. doi: 10.3390/polym15040845.
The energy efficiency of material extrusion additive manufacturing has a significant impact on the economics and environmental footprint of the process. Control parameters that ensure 3D-printed functional products of premium quality and mechanical strength are an established market-driven requirement. To accomplish multiple objectives is challenging, especially for multi-purpose industrial polymers, such as the Poly[methyl methacrylate]. The current paper explores the contribution of six generic control factors (infill density, raster deposition angle, nozzle temperature, print speed, layer thickness, and bed temperature) to the energy performance of Poly[methyl methacrylate] over its mechanical performance. A five-level L25 Taguchi orthogonal array was composed, with five replicas, involving 135 experiments. The 3D printing time and the electrical consumption were documented with the stopwatch approach. The tensile strength, modulus, and toughness were experimentally obtained. The raster deposition angle and the printing speed were the first and second most influential control parameters on tensile strength. Layer thickness and printing speed were the corresponding ones for the energy consumption. Quadratic regression model equations for each response metric over the six control parameters were compiled and validated. Thus, the best compromise between energy efficiency and mechanical strength is achievable, and a tool creates significant value for engineering applications.
材料挤出增材制造的能源效率对该工艺的经济性和环境足迹有重大影响。确保3D打印出具有优质品质和机械强度的功能性产品的控制参数是既定的市场驱动要求。要实现多个目标具有挑战性，尤其是对于诸如聚甲基丙烯酸甲酯之类的多用途工业聚合物而言。本文探讨了六个通用控制因素（填充密度、光栅沉积角度、喷嘴温度、打印速度、层厚和床温）对聚甲基丙烯酸甲酯能量性能及其机械性能的影响。构建了一个五级L25田口正交阵列，有五个重复，涉及135次实验。使用秒表法记录3D打印时间和耗电量。通过实验获得拉伸强度、模量和韧性。光栅沉积角度和打印速度是对拉伸强度影响最大的第一和第二控制参数。层厚和打印速度是能耗方面相应的控制参数。编制并验证了六个控制参数上每个响应指标的二次回归模型方程。因此，可以在能源效率和机械强度之间实现最佳折衷，并且该工具为工程应用创造了重大价值。
