Experimental evaluation and optimization of parameters affecting delamination, geometrical tolerance and surface roughness in ultrasonic drilling of 3D-Printed PLA thermoplastic

IF 3.6 4区材料科学 Q2 MATERIALS SCIENCE, COMPOSITES

Journal of Thermoplastic Composite Materials Pub Date : 2024-06-24 DOI:10.1177/08927057241264803

Mohammad Baraheni, Mohammad Reza Shabgard, Saeid Amini, Farid Gholipour

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Abstract

Ultrasonic drilling is a suitable process to enhance the generated surfaces by additive manufacturing. In this study, polylactic acid was selected as the workpiece. The examination parameters were thrust force, delamination, geometrical tolerance, chip adhesion, hole wall morphology and surface roughness. It was explained that the harmonic movement of drill bit in ultrasonic drilling reduced thrust force, delamination, circularity, cylindricality and surface roughness up to 14.5%, 3.7%, 44%, 38%, 20% respectively and removed chip adhesion. Furthermore, number of end-mill flutes was examined and observed that 4-flutes compared to 2-flutes induced reduction in thrust force, delamination, circularity, cylindricality and surface roughness up to 15.2%, 2%, 7.5%, 18.9%, 12.5% respectively. Besides, analysis of variance was established to determine the significant parameters. Finally, non-dominated sorting genetic algorithm-II technique was implemented in order to carry out multi-response optimization.

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对三维打印聚乳酸热塑性塑料超声波钻孔中影响分层、几何公差和表面粗糙度的参数进行实验评估和优化

超声波钻孔是通过增材制造增强生成表面的一种合适工艺。本研究选择聚乳酸作为工件。检查参数包括推力、分层、几何公差、切屑附着力、孔壁形态和表面粗糙度。结果表明，在超声波钻孔过程中，钻头的谐波运动使推力、分层、圆度、圆柱度和表面粗糙度分别降低了 14.5%、3.7%、44%、38% 和 20%，并消除了切屑附着。此外，还对立铣刀刃数进行了研究，结果表明，4 个刃比 2 个刃的推力、分层、圆度、圆柱度和表面粗糙度分别降低了 15.2%、2%、7.5%、18.9% 和 12.5%。此外，还通过方差分析确定了重要参数。最后，采用非支配排序遗传算法-II 技术进行多响应优化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Thermoplastic Composite Materials 工程技术-材料科学：复合

CiteScore

8.00

自引率

18.20%

发文量

104

审稿时长

5.9 months

期刊介绍： The Journal of Thermoplastic Composite Materials is a fully peer-reviewed international journal that publishes original research and review articles on polymers, nanocomposites, and particulate-, discontinuous-, and continuous-fiber-reinforced materials in the areas of processing, materials science, mechanics, durability, design, non destructive evaluation and manufacturing science. This journal is a member of the Committee on Publication Ethics (COPE).