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Multi-objective optimization analysis of cutting parameters when drilling composite materials with special geometry drills

机译：用特殊几何钻探钻合复合材料时切割参数的多目标优化分析

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The cutting tool geometry is strongly influencing damage induced during drilling of composite materials. The searching of new and optimum geometries reducing the damage on the laminates is still a challenge for the scientific community and industry. This study focuses on drilling woven CFRP laminates with four different tool geometries, analyzing the influence of the cutting parameters on the cutting forces and delamination damage. The work is divided in three phases; the first phase carries out a full factorial design of experiments conducted to quantify the significance of each process parameter as well as its interaction, on the generation of delamination at the hole entry and exit as well as the thrust force and torque. The second phase uses the response surface methodology (RSM) to establish the relationships between each output variable and the input variables based on ANOVA results. Finally, a multi-objective optimization strategy has been presented using the fitting equations to select optimum ranges of design parameters that can minimize collectively the aforementioned output variables. Ultimate objective is the process improvement toward negligible defects during drilling of woven CFRP composites.
机译：切削刀具几何形状在复合材料钻井期间诱导造成的损坏。寻求新的和最佳的几何形状降低了层压板的损坏仍然是科学界和行业的挑战。本研究专注于钻孔编织CFRP层压板，具有四种不同的工具几何形状，分析了切削参数对切割力和分层损伤的影响。工作分为三个阶段;第一阶段执行进行的实验的完整因子设计，以量化每个工艺参数的重要性以及其相互作用，在空穴入口处的分层和出口以及推力和扭矩上的产生。第二阶段使用响应面方法（RSM）来建立每个输出变量与基于ANOVA结果之间的输入变量之间的关系。最后，使用拟合方程呈现了多目标优化策略，以选择可以集体化上述输出变量的最佳设计参数范围。最终目标是钻探编织CFRP复合材料期间可忽略不计缺陷的过程。

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