通过颗粒增材制造提高3d打印聚乳酸的力学性能:基于熵权的灰色关联分析

Q1 Engineering
Radhika Mandala , B. Anjaneya Prasad , Suresh Akella
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引用次数: 0

摘要

最普遍和广泛使用的增材制造(AM)方法是熔融沉积建模(FDM),它使用长丝作为原料。颗粒增材制造(PAM)是FDM领域的一项新兴技术,它利用热塑性颗粒作为原料,考虑到它们比长丝更容易生产。PAM技术通过消除将颗粒转化为长丝的需要,使复杂部件的生产具有高尺寸精度和成本效益。打印参数的谨慎选择极大地影响了3d打印对象的性能。这项工作强调了印刷参数对机械性能测量,拉伸,弯曲和硬度特性的重要性,利用多目标优化技术。它是田口法、方差分析(ANOVA)和基于熵的灰色关联分析(EGRA)的结合。采用田口L9正交阵列,以填充模式、栅格角度和层高为控制变量,拉伸、弯曲强度和硬度作为输出响应。结果表明,在45°方向和0.25 mm层高的旋转充填模式下,获得了最佳效果。与初始参数配置相比,在多目标优化中执行EGRA导致灰色关联等级提高3.3%。因此,EGRA被证明是PAM优化过程中一种有效的潜在工具。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Enhancing the mechanical properties of 3D-Printed polylactic acid through pellet additive manufacturing: A grey relational analysis based on entropy weights
The most prevalent and extensively employed additive manufacturing (AM) approach method is fused deposition modeling (FDM), which uses filament as feedstock. Pellet additive manufacturing (PAM) is an emerging technique within the field of FDM that utilizes thermoplastic pellets as the feedstock considering their greater ease of production compared to filaments. The PAM technique enables the production of intricate components with high dimensional precision and cost efficiency by eliminating the need to transform pellets into filaments. The discreet choice of printing parameters greatly influences the performance of 3D-printed objects. This work underscores the significance of printing parameters on mechanical performance measures, tensile, flexure, and hardness characteristics by utilizing a multi-objective optimization technique. It is a combination of the Taguchi, analysis of variance (ANOVA), and entropy-based grey relational analysis (EGRA). A Taguchi L9 orthogonal array is employed, with infill pattern, raster angle, and layer height as the control variables, while tensile and flexural strengths, and hardness serve as the output responses. The findings demonstrated that the optimum outcomes were achieved for the gyroid infill pattern at 45° orientation and 0.25 mm layer height. Enforcing EGRA in multi-objective optimization has resulted in an improvement of 3.3 % in the grey relational grade when compared to the initial parameter configurations. Hence, EGRA proves to be an effective potential tool for the optimization process in PAM.
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来源期刊
International Journal of Lightweight Materials and Manufacture
International Journal of Lightweight Materials and Manufacture Engineering-Industrial and Manufacturing Engineering
CiteScore
9.90
自引率
0.00%
发文量
52
审稿时长
48 days
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