Doluk Elżbieta, Rudawska Anna, Kuczmaszewski Józef, Pieśko Paweł
Department of Mechanical Engineering, Lublin University of Technology, 20-388 Lublin, Poland.
Materials (Basel). 2020 Apr 3;13(7):1664. doi: 10.3390/ma13071664.
Hybrid sandwich structures are more and more widely used in many industries. This is mainly due to their good properties. One of the limitations regarding the use of sandwich structures is their difficult processing. Therefore, it seems reasonable to determine the influence of cutting parameters and machining configuration on the characteristic defect (phase) formed at the boundary of the materials forming a hybrid sandwich structure. This study investigates the effects of layer orientations during milling and machining parameters such as the cutting speed V, the feed f and the cutting width a. The study is conducted on a two-layer sandwich structure composed of two materials: 2024 aluminum alloy and epoxy-carbon composite with 60% of high-strength carbon fibers. A statistical analysis is performed using the Statistica program. The results show that the change in the cutting parameters has a greater impact on the formation of a defect on the surface of samples when the machining process starts on the side of the composite rather than the metal. The highest defect value is obtained for the milling from the composite layer when the process is performed with the following cutting parameters: V = 300 m/min, f = 0.08 mm/tooth, a = 5 mm.
混合夹层结构在许多行业中得到越来越广泛的应用。这主要归因于它们良好的性能。使用夹层结构的局限性之一在于其加工困难。因此，确定切割参数和加工配置对形成混合夹层结构的材料边界处形成的特征缺陷（相）的影响似乎是合理的。本研究调查了铣削过程中层取向以及诸如切削速度V、进给量f和切削宽度a等加工参数的影响。该研究是在由两种材料组成的两层夹层结构上进行的：2024铝合金和含有60%高强度碳纤维的环氧 - 碳复合材料。使用Statistica程序进行统计分析。结果表明，当加工过程从复合材料一侧而非金属一侧开始时，切削参数的变化对样品表面缺陷的形成影响更大。当采用以下切削参数进行加工时，从复合层铣削得到的缺陷值最高：V = 300米/分钟，f = 0.08毫米/齿，a = 5毫米。
