FFF工艺参数的分析与优化以提高3D打印PLA产品的力学性能

IF 1.1 4区工程技术 Q4 ENGINEERING, CHEMICAL

International Polymer Processing Pub Date : 2022-10-18 DOI:10.1515/ipp-2022-4237

Tesfaye Mengesha Medibew, A. Ali

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引用次数: 2

摘要

摘要本研究以R 2(97.29%)的拉伸强度为重点，确定了熔丝制造(FFF)工艺参数对3D打印PLA产品力学性能的综合影响。ASTM D638试验标准用于拉伸试验试样的制备。该优化技术已被用于确定FFF工艺参数的最佳组合，以验证实验拉伸试验和计算流体动力学(CFD)模拟。结果表明，最佳冷却风扇转速为79.3%，挤出温度为214.4℃，打印速度为75.9 mm/s，栅格宽度为0.4814 mm，壳号为5，抗拉强度(45.06 MPa)误差为2.266%。SEM形貌分析表明，在80%冷却风扇转速下，制备的零件具有良好的层间结合强度，CFD温度分布分析也证实了这一点。

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Analysis and optimization of FFF process parameters to enhance the mechanical properties of 3D printed PLA products

Abstract In this work, the combined effects of fused filament fabrication (FFF) process parameters on the mechanical properties of 3D printed PLA products have been determined by focusing on the tensile strength at R 2 (97.29%). ASTM D638 test standard is used for the preparation of specimens for tensile tests. The optimization technique has been used to determine the optimal combinations of FFF process parameters for the validation of experimental tensile tests and computational fluid dynamics (CFD) simulations. From the results obtained the optimum cooling fan speed of 79.3%, extrusion temperature of 214.4 °C, printing speed of 75.9 mm/s, raster width of 0.4814 mm, and shell number 5 were determined with a 2.266% error of the tensile strength (45.06 MPa). SEM morphology examination shows that the fabricated part cooled at 80% cooling fan speed illustrates good inter-layer bond strength which is also confirmed by CFD temperature distributions analysis.

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来源期刊

International Polymer Processing 工程技术-高分子科学

CiteScore

2.20

自引率

7.70%

发文量

审稿时长

6 months

期刊介绍： International Polymer Processing offers original research contributions, invited review papers and recent technological developments in processing thermoplastics, thermosets, elastomers and fibers as well as polymer reaction engineering. For more than 25 years International Polymer Processing, the journal of the Polymer Processing Society, provides strictly peer-reviewed, high-quality articles and rapid communications from the leading experts around the world.