纤维增强复合材料磨削钻孔的表面微观研究

运用扫描电镜对烧结金刚石钻头加工纤维复合材料的孔壁表面进行微观观察，在此基础上分析了纤维复合材料磨削钻孔过程中的纤维破坏机理和磨削表面的微观结构特征。结果表明，玻璃纤维的磨削断口形貌可分为6种情况；芳纶纤维的破坏机理不同于玻璃纤维，其磨削断口形貌可分为7种情况；纤维复合材料的磨削加工表面由纤维断口表面和树脂涂附表面两部分组成，并存在3种特征鲜明的纤维断裂区。研究成果在一定程度上揭示了纤维复合材料的磨削钻孔机理，具有一定的参考价值。

Microscopic Study of Ground Surfaces of Drilled Holes in Fibre Reinforced Plastics

A scanning electron microscope (SEM) was used to observe the ground surfaces of drilled holes in fibre reinforced plastics (FRP) by using a sintered diamond drill, and accordingly the fracture mechanisms of glass fibre and Kevlar fibre, and the microscopic characteristics of ground surfaces were studied. The SEM observations show that there are six kinds of broken appearances for glass fibre and seven kinds for Kevlar fibre; the ground surface of FRP can be divided into two kinds of area, namely the area covered with polymer resin matrix and the area dominated by broken fibres, with three kinds of fibre fracture area found. To a certain extent, the results acmeved in tms paper reveal the drilling mechanism of FRP.