Effect Of The Support Structure On Flexural Properties Of Fabricated Part At Different Parameters In The Fdm Process

Abstract

Traditional fused deposition modeling (FDM) is an additive manufacturing method in which a part is fabricated using layer upon layer approach. Due to the imminent nature of this approach, support structures are needed to sustain overhanging elements of the parts, particularly for the production of metal components and complex geometries. Several works are going on to minimize the usage of supports by using improved support strategies. However, the use of different support strategies at different pre-defined machine settings may lead to varied properties of the final printed part. In this work, the influence of support strategies on flexural properties at four different parameters is experimentally determined in the fused deposition modeling process. Two support strategies, Line and Grid, are adopted while fabricating the same 3D part at three different printer parameter settings. The flexural properties of the samples are compared for assessing the impact of two support strategies, as well as the support material usage and printing time. Results reveal that two support methods lead to varied flexural strength and print qualities at varied parameters.

Establishing a Framework for Fused Filament Fabrication Process Optimization: A Case Study with PLA Filaments

“…After printing the first layer on the print bed, subsequent layers may be extruded and bonded to the previous layer, facilitated by the semi-molten state of the extruded filament. Depending on the part geometry, a removable support material may be used, which is typical with overhanging sections, such as holes, arches, or bridges [12]. FFF is particularly versatile regarding material compatibility, spanning many polymer types and filament colors, with the principal requirement being that filaments must be extrudable through a heated nozzle.…”

Improving Estimation of Layer Thickness and Identification of Slicer for 3D Printing Forensics

“…Each slicer program exhibited unique periodic patterns, as the G-code was designed differently to conceal the Z-seam. Furthermore, the diversity in the shapes of the support structure reflects the uniqueness of each slicer program [32]. Structures such as overhangs or bridges may appear when complex or irregular models are used.…”

Veering to a Continuous Platform of Fused Deposition Modeling Based 3D Printing for Pharmaceutical Dosage Forms: Understanding the Effect of Layer Orientation on Formulation Performance

“…The adaptation of this continuous 3D printing system would bypass the pre-print and post-print lag times, and thereby reduce the manual intervention every time. The conveyor belt moves along the z -axis as the print progresses at an angle (25–60 degrees between the extruder and build surface ( Figure 1 A)), which helps to minimize and eliminate the use of support structures during printing [ 20 , 21 ]. This paper aims to set up and evaluate the continuous platform to understand the effect of the printed layer orientation on drug release and tablet mechanical strength, the two important parameters for drug dosage form performance, as compared to the conventional FDM printers that are limited to the batch printing process.…”