Masoud Fathi, Sapuan S M, Ariffin Mohd Khairol Anuar Mohd, Nukman Y, Bayraktar Emin
Department of Mechanical and Manufacturing Engineering, University Putra Malaysia, Serdang 43400, Selangor, Malaysia.
Laboratory of Biocomposite Technology, Institute of Tropical Forestry and Forest Products (INTROP), University Putra Malaysia, Serdang 43400, Selangor, Malaysia.
Polymers (Basel). 2021 Jul 31;13(15):2543. doi: 10.3390/polym13152543.
In this research, the effect of processing input parameters on the kerf taper angle response of three various material thicknesses of sugar palm fiber reinforced unsaturated polyester composite was investigated as an output parameter from abrasive waterjet and laser beam cutting techniques. The main purpose of the study is to obtain data that includes the optimum input parameters in cutting the composite utilizing these two unconventional techniques to avoid some defects that arise when using traditional cutting methods for cutting the composites, and then make a comparison to determine which is the most appropriate technique regarding the kerf taper angle response that is desired to be reduced. In the laser beam cutting process, traverse speed, laser power, and assist gas pressure were selected as the variable input parameters to optimize the kerf taper angle. While the water pressure, traverse speed, and stand-off-distance were the input variable parameters in the case of waterjet cutting process, with fixing of all the other input parameters in both cutting techniques. The levels of the input parameters that provide the optimal response of the kerf taper angle were determined using Taguchi's approach, and the significance of input parameters was determined by computing the max-min variance of the average of the signal to-noise ratio (S/N) for each parameter. The contribution of each input processing parameter to the effects on kerf taper angle was determined using analysis of variation (ANOVA). Compared with the results that were extrapolated in the previous studies, both processes achieved acceptable results in terms of the response of the kerf taper angle, noting that the average values produced from the laser cutting process are much lower than those resulting from the waterjet cutting process, which gives an advantage to the laser cutting technique.
在本研究中，研究了加工输入参数对三种不同材料厚度的糖棕纤维增强不饱和聚酯复合材料切口锥角响应的影响，该响应作为磨料水射流和激光束切割技术的输出参数。本研究的主要目的是获取数据，包括使用这两种非常规技术切割复合材料时的最佳输入参数，以避免使用传统切割方法切割复合材料时出现的一些缺陷，然后进行比较，以确定就期望减小的切口锥角响应而言哪种技术最合适。在激光束切割过程中，选择横向速度、激光功率和辅助气体压力作为可变输入参数，以优化切口锥角。而在水射流切割过程中，水压、横向速度和离焦距离是输入可变参数，同时固定两种切割技术中的所有其他输入参数。使用田口方法确定提供切口锥角最佳响应的输入参数水平，并通过计算每个参数的信噪比（S/N）平均值的最大-最小方差来确定输入参数的显著性。使用方差分析（ANOVA）确定每个输入加工参数对切口锥角影响的贡献。与先前研究推断的结果相比，就切口锥角响应而言，这两种工艺均取得了可接受的结果，注意到激光切割工艺产生的平均值远低于水射流切割工艺产生的平均值，这使激光切割技术具有优势。
