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Impact of quasi-isotropic raster layup on the mechanical behaviour of fused filament fabrication parts
High Performance Polymers ( IF 2.1 ) Pub Date : 2021-09-08 , DOI: 10.1177/09540083211041954
Lovin K John 1 , Ramu Murugan 1 , Sarat Singamneni 2
Affiliation  

The development of fused filament fabrication has extended the range of application of additive manufacturing in various areas of research. However, the mechanical strength of the fused filament fabrication–printed parts were considerably lower than that of parts fabricated by other conventional methods, owing to the observed anisotropic behaviour and formation of voids by weak interlayer diffusion. Intense studies on the effect of design and process parameters of the printed parts on the mechanical properties have been done, whereas studies on the effect of build orientations and raster patterns needs special concern. The main aim of this work is to fabricate parts printed using quasi-isotropic laminate arrangement of rasters, achieved by a raster layup of [45/0/−45/90]s, and to compare their mechanical properties with those of the commonly used 0°/90° (cross) and 45°/−45° (crisscross) raster oriented parts. The quasi-isotropic–oriented samples were observed with improved mechanical behaviour in tensile, compressive, flexural and impact tests compared to the commonly employed raster orientations.



中文翻译:

准各向同性光栅叠层对熔丝制造部件机械性能的影响

熔丝制造的发展扩大了增材制造在各个研究领域的应用范围。然而,由于观察到的各向异性行为和通过弱层间扩散形成空隙,熔融长丝制造印刷部件的机械强度远低于通过其他常规方法制造的部件。已经对打印部件的设计和工艺参数对机械性能的影响进行了深入研究,而对构建方向和光栅图案的影响的研究需要特别关注。这项工作的主要目的是制造使用准各向同性光栅排列打印的零件,通过 [45/0/−45/90] s的光栅叠层实现,并将它们的机械性能与常用的 0°/90°(交叉)和 45°/-45°(交叉)光栅定向零件的机械性能进行比较。与常用的光栅取向相比,准各向同性取向的样品在拉伸、压缩、弯曲和冲击试验中的机械性能得到改善。

更新日期:2021-09-08
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