Machining and Drilling of Carbon Fiber Reinforced Plastic (CFRP) Composites

摘要

The use of carbon fiber reinforced polymers (CFRP) has been steadily increasing because of superior specific strength, corrosion resistance, and fatigue performance. Machining of CFRP structures is often necessary for achieving final dimensions following cure and for assembly operations. Edge trimming or milling is the most common secondary processing method for achieving net engineering geometry and hole drilling is the most common method for producing features necessary for assembly. There are significant differences between the machining of metals and composites due to the inhomogeneity and anisotropy of the material system. The choice of constituent materials and fiber orientation has the most significant influence on the cutting process. A common concern when drilling and trimming CFRP materials is machining quality, which is essential for dimensional accuracy, and minimizing defects. Chip formation modes, abrasiveness of the fibers, cutting tool selection, and cutting conditions impact hole and edge quality of machined components. This paper will provide some recent experimental results along with a review of the issues and challenges for edge trimming and drilling of CFRP materials.