Fibre-reinforced polymers are utilized for different industrial applications. Hybridization of such fibre polymers aids in upgrading their performance. Kevlar-29, basalt fibre, and carbon fibre find tremendous use in automotive, defense and aerospace industries. These applications require precision machining with very close tolerances. In this research, such an attempt has been made to measure the values of top kerf width, and bottom kerf width, cut with a pulsed Nd:YAG laser on a 1.92 mm thick hybrid composite laminate having fibre volume fraction of 55.2%, and further optimize them using grey relational analysis. Input parameters such as pulse width, gas pressure, lamp current, standoff distance, and cutting speed have been experimentally varied for 42 combinations which have been designed with the help of Box Behnken design. Effects of parameters individual contribution towards the kerf quality have been discussed. With the help of grey relational analysis, optimal results were obtained at lamp current of 200 A, pulse width of 2.5 ms, 2 mm of standoff distance, compressed air pressure of 12 kg/cm² and cutting speed of 200 mm/min. The values of the kerf width showed a significant reduction of 15.28% and 12.81% when optimal values of input parameters were used.

纤维增强的聚合物用于不同的工业应用。这种纤维聚合物的杂化有助于提高其性能。凯夫拉尔29，玄武岩纤维和碳纤维在汽车，国防和航空航天工业中得到了广泛的应用。这些应用需要公差非常小的精密加工。在这项研究中，已经进行了这样的尝试：测量脉冲宽度的Nd：YAG激光在1.92毫米厚的纤维体积分数为55.2％的混合复合层压板上切割出的顶部切口宽度和底部切口宽度的值，并进一步进行测量。使用灰色关联分析对它们进行优化。在Box Behnken设计的帮助下，已针对42种组合对输入参数（例如脉冲宽度，气压，灯电流，支座距离和切割速度）进行了实验性更改。讨论了参数个体对切缝质量的影响。借助灰色关联分析，在200 A的灯电流，2.5 ms的脉冲宽度，2 mm的对距距离，12 kg / cm的压缩空气压力下可获得最佳结果²，切割速度为200毫米/分钟。当使用输入参数的最佳值时，切口宽度的值显着降低了15.28％和12.81％。