The quality of holes machined in carbon fibre reinforced plastic is vital to the strength of CFRP/Ti stacks. In this study, the influence of cutting temperature upon hole damage of CFRP in CFRP/Ti stacks under helical milling was compared with and without the presence of an underlying Ti. The cutting forces, exit quality, wall surface and subsurface quality of CFRP hole were analysed. And proposing a method to evaluate subsurface damage, and combined with the tensile test to study the effect of subsurface damage on the mechanical properties of CFRP. The results suggest that titanium alloy slightly exerts an effect on the cutting force and exit and wall mass of CFRP holes, yet dramatically affects their subsurface mass. High cutting temperatures may degrade the performance of the CFRP resin matrix, which may cause further subsurface damage closest to the hole exit. The proposed method is used to evaluate subsurface damage. It was most serious in the fibre layer near the hole exit and gradually decreased with distance from the exit. The results of this study will help improve the machining quality of CFRP/Ti stacks.

用碳纤维增强塑料加工的孔的质量对于CFRP / Ti叠层的强度至关重要。在这项研究中，比较了在有和没有底层Ti的情况下，切削温度对CFRP / Ti叠层中CFRP孔损伤的影响。分析了CFRP孔的切削力，出口质量，壁面和地下质量。并提出了评价地下损伤的方法，并结合拉伸试验研究了地下损伤对CFRP力学性能的影响。结果表明，钛合金对CFRP孔的切削力，出口和壁质量有轻微影响，但显着影响其表面质量。高切削温度可能会降低CFRP树脂基体的性能，这可能会导致最靠近孔出口的地下破坏。所提出的方法用于评估地下破坏。它在孔出口附近的纤维层中最为严重，并随着距出口的距离逐渐减小。这项研究的结果将有助于提高CFRP / Ti叠层的加工质量。