Influence of meso-structure and chemical composition on FDM 3D-printed parts
Influence of meso-structure and chemical composition on FDM 3D-printed parts
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DOI：
10.1016/j.compositesb.2017.01.019
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发表时间：
2017-03-15
影响因子：
13.1
通讯作者：
Auricchio, Ferdinando
中科院分区：
文献类型：
--
作者：
Alaimo, Gianluca;Marconi, Stefania;Auricchio, Ferdinando
研究了挤出丝材尺寸和化学成分对丙烯腈-丁二烯-苯乙烯（ABS）聚合物熔融沉积成型（FDM）制品力学性能的影响。所有方面都通过实验活动进行了研究：我们在相同的材料上测试了三种不同的长丝尺寸，并在相同的长丝尺寸下测试了两种不同的化学成分。我们验证了FDM ABS试样显示各向异性的力学性能，因为它们随长丝挤出方向而变化。因此，经典层合理论（CLT）和Tsai-Hill屈服准则能够很好地预测FDM试件的面内刚度和强度。我们评估，不同的化学成分和长丝尺寸，有可能调整纤维性能和纤维与纤维的粘合，因此，在宏观尺度上的整体机械性能，特别是屈服强度和失效应变。实验获得的数据是有用的，以校准力学模型与计算工具，有限元分析。(C)2017爱思唯尔有限公司版权所有
We studied the influence of extruded filament dimensions and chemical composition on mechanical behavior of Fused Deposition Modeling (FDM) objects made of Acrylonitrile Butadiene Styrene (ABS) polymer. All aspects are investigated through experimental campaigns: we tested three different filament dimensions on the same material and two different chemical compositions with the same filament dimensions. We verified that FDM ABS specimens show anisotropic mechanical properties since they vary with filament extrusion direction. Accordingly, Classical Lamination Theory (CLT) and Tsai-Hill yielding criterion were found to be well capable of predicting in-plane stiffness and strength of FDM specimens. We assessed that, varying chemical composition and filament dimensions, it is possible to tune fiber properties and fiber-to-fiber bonding and, consequently, the overall mechanical properties at macro-scale, in particular the yielding strength and the strain at failure. The experimentally obtained data are useful to calibrate mechanical models to be used with computational tools as finite element analyses. (C) 2017 Elsevier Ltd. All rights reserved.