Strength of PLA Components Fabricated with Fused Deposition Technology Using a Desktop 3D Printer as a Function of Geometrical Parameters of the Process
Strength of PLA Components Fabricated with Fused Deposition Technology Using a Desktop 3D Printer as a Function of Geometrical Parameters of the Process
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DOI：
10.3390/polym10030313
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发表时间：
2018-03-01
期刊：
影响因子：
5
通讯作者：
Tavitov, Azamat G.
中科院分区：
文献类型：
--
作者：
Kuznetsov, Vladimir E.;Solonin, Alexey N.;Tavitov, Azamat G.
本文研究了熔融沉积成型（FDM）-熔丝制造（FFF）3D打印工艺的几何参数对开源桌面3D打印机打印部件强度的影响，以及用于该目的的最流行的材料-即，聚乳酸（PLA）。使用一组不同的喷嘴（0.4、0.6和0.8 mm）和从机器的最小到最大物理极限的层高度范围进行研究。为了评估印刷强度，提出了一种新的评估方法。在三点弯曲夹具中沿最弱方向（跨层）加载管状样品。通过扫描电子显微镜（SEM）扫描的样品的介观结构评价被用来解释所获得的结果。我们检测到一个显着的影响几何工艺参数对样品的介观结构，因此，对样品的强度。
The current paper studies the influence of geometrical parameters of the fused deposition modeling (FDM)-fused filament fabrication (FFF) 3D printing process on printed part strength for open source desktop 3D printers and the most popular material used for that purpose-i.e., polylactic acid (PLA). The study was conducted using a set of different nozzles (0.4, 0.6, and 0.8 mm) and a range of layer heights from the minimum to maximum physical limits of the machine. To assess print strength, a novel assessment method is proposed. A tubular sample is loaded in the weakest direction (across layers) in a three-point bending fixture. Mesostructure evaluation through scanning electronic microscopy (SEM) scans of the samples was used to explain the obtained results. We detected a significant influence of geometric process parameters on sample mesostructure, and consequently, on sample strength.