Analysis of the influence of FDM parameters in the tensile strength response using machine learning

V. Cudris, V. J. Santiago, C. A. Londoño, H. Lopez
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Abstract

This research presents a comprehensive experimental study on the effect of temperature, material and process parameters related to tensile strength response in 3D printing manufacturing process with ABS material. A Hyper Latin Square design was chosen for the experimental points distribution. Thirteen parameters with multiple levels are considered LAYERHEIGHT, WALLTHICKNESS, TOPBOTTOMTHICKNESS, TOPBOTTOM-LINEDIRECTION1, TOPBOTTOMLINEDIRECTION2, INFILLDENSITY, INFILLLINEDI-RECTION1, INFILLLINEDIRECTION2, PRINTSPEED, EXTRUSIONTEMP, BEDTEMP, WORKSPACETEMP and POSITION. Type IV tensile specimens are fabricated and tested with an universal testing machine. Maximum stress is measured, evaluated and analyzed in three different building positions.Machine learning algorithm with Orange Data mining software are used to study underlying relations between factors and response. Experimental results indicate that INFILLDENSITY, TOPBOTTOMTHICKNESS and INFILLLINEDIRECTION1 has a strong positive correlation with tensile strength. Meanwhile, TOPBOTTOMLINEDI-RECTION1, WORKSPACETEMPERATURE and PRINTSPEED has a negative correlation with tensile strength. Position 1 with line depositions parallel to Y axis produce the higher tensile strength response. Findings imply that machine algorithms can be used to study multiple parameters at time.
利用机器学习分析 FDM 参数对拉伸强度响应的影响
本研究对 ABS 材料 3D 打印制造过程中与拉伸强度响应相关的温度、材料和工艺参数的影响进行了全面的实验研究。实验点分布采用超拉丁方阵设计。考虑了 13 个多级参数:层高(LAYERHEIGHT)、壁厚(WALLTHICKNESS)、顶底板厚度(TOPBOTTOMTHICKNESS)、顶底板连线方向1(TOPBOTTOM-LINEDIRECTION1)、顶底板连线方向2(TOPBOTTOM-LINEDIRECTION2)、渗透密度(INFILLDENSITY)、渗透连线方向1(INFILLLINEDI-RECTION1)、渗透连线方向2(INFILLLINEDIRECTION2)、打印速度(PRINTSPEED)、挤压速度(EXTRUSIONTEMP)、基底速度(BEDTEMP)、工作空间速度(WORKSPACETEMP)和位置(POSITION)。用万能试验机制作和测试 IV 型拉伸试样。使用 Orange 数据挖掘软件的机器学习算法来研究因素与响应之间的潜在关系。实验结果表明,INFILLDENSITY、TOPBOTTOMTHICKNESS 和 INFILLLINEDIRECTION1 与抗拉强度有很强的正相关性。同时,顶面线性方向 1、工作空间温度和印花速度与抗拉强度呈负相关。位置 1 的线条沉积平行于 Y 轴,产生的抗拉强度响应较高。研究结果表明,机器算法可用于同时研究多个参数。
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