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Parameter optimisation of powder mixed EDM of aluminium-based metal matrix composite using Taguchi and grey analysis

机译:基于Taguchi和灰色分析的铝基金属基复合材料粉末混合电火花加工参数优化。

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Powder-mixed electrical discharge machining (PMEDM), a non-conventional manufacturing process involves the use of a dielectric fluid mixed with abrasive powder (Al_2O_3), combines the benefits of mechanical and thermal interactions. The aim of this article is to use a new approach of performance evaluation to evaluate the effectiveness of optimising multiple performance characteristics of PMEDM of SiC reinforced ZA-27 metal matrix composites (MMCs). Taguchi analysis is used to plan and analyse the experiment and grey relational analysis (GRA) for multi-parameter analysis. The considered process parameter includes the four control factors namely powder concentration, % Sic in MMC, pulse current (I_p) and duty cycle (τ). The combination of L_9 orthogonal array design of experiment with GRA enables to determine the optimal parameters for multiple responses. GRA is used to obtain a single performance index, grey relational grade through grey relational coefficient to optimise the PMEDM process. In addition, analysis of variance (ANOVA) for the GRC is also utilised.
机译:粉末混合放电加工(PMEDM)是一种非常规的制造工艺,涉及将介电流体与磨料粉末(Al_2O_3)混合使用,结合了机械和热相互作用的优点。本文的目的是使用一种新的性能评估方法来评估优化SiC增强ZA-27金属基复合材料(MMC)的PMEDM多个性能特征的有效性。 Taguchi分析用于计划和分析实验,而灰色关联分析(GRA)用于多参数分析。所考虑的过程参数包括四个控制因素,即粉末浓度,MMC中的Sic%,脉冲电流(I_p)和占空比(τ)。实验的L_9正交阵列设计与GRA相结合,可以确定多个响应的最佳参数。 GRA用于通过灰色关联系数获得单一性能指标,灰色关联等级,以优化PMEDM过程。此外,还利用了GRC的方差分析(ANOVA)。

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