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首页> 外文期刊>Optics and Lasers in Engineering >Multi-objective optimization of Nd:YAG laser cutting of nickel-based superalloy sheet using orthogonal array with principal component analysis
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Multi-objective optimization of Nd:YAG laser cutting of nickel-based superalloy sheet using orthogonal array with principal component analysis

机译：基于主成分分析的正交阵列对Nd：YAG激光切割镍基高温合金板材的多目标优化

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摘要

Laser cutting of nickel-based superalloy sheets, having wide applications in aircraft and rocket industries, is important from the quality of cut point of view. Keeping this in view, a hybrid approach of Taguchi method (TM) and principal component analysis (PCA) has been applied for multi-objective optimization (MOO) of pulsed Nd:YAG laser beam cutting (LBC) of nickel-based superalloy (SUPERNI 718) sheet to achieve better cut qualities within existing resources. The three-quality characteristics kerf width, kerf deviation (along the length of cut), and kerf taper have been considered for simultaneous optimization. The input parameters considered are assist gas pressure, pulse width, pulse frequency, and cutting speed. Initially, single-objective optimization has been performed using TM and then the signal-to-noise (S/N) ratios obtained from TM have been further used in PCA for multi-objective optimization. The results of MOO include the prediction of optimum input parameter level and their relative significance on multiple quality characteristics (MQC). The responses at predicted optimum parameter level are in good agreement with the results of confirmation experiments conducted for verification tests.
机译：从切割质量的角度来看，激光切割镍基高温合金板在飞机和火箭工业中有着广泛的应用，这一点很重要。考虑到这一点，田口方法（TM）和主成分分析（PCA）的混合方法已应用于镍基高温合金（SUPERNI）的脉冲Nd：YAG激光束切割（LBC）的多目标优化（MOO） 718）工作表，以在现有资源中获得更好的切割质量。为了同时进行优化，考虑了三个质量特征：切缝宽度，切缝偏差（沿切割长度）和切缝锥度。考虑的输入参数是辅助气压，脉冲宽度，脉冲频率和切割速度。最初，已经使用TM执行了单目标优化，然后从TM获得的信噪比（S / N）已在PCA中进一步用于多目标优化。 MOO的结果包括最佳输入参数水平的预测及其对多种质量特征（MQC）的相对重要性。在预测的最佳参数水平上的响应与为验证测试​​而进行的确认实验的结果非常吻合。

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