Carbon fiber reinforced plastics (CFRPs) are employed in many industrial applications because of their attractive mechanical and structural properties. However, to date, drilling is still considered as the most pivotal process in manufacturing/assembly of CFRPs components, and the delamination damage can be regarded as the most severe machining-induced issue in the drilling process. To solve this problem, a delamination prediction model for CFRPs using Ultrasonic Vibration Assisted Drilling (UVAD) with the abrasive diamond hole saw or core drill is proposed to calculate delamination factor and thickness. The approach of the modeling development starts from simplified for tool and CFRPs workpiece, calculating the total cutting force and the critical thrust force, respectively, and adopting maximum nominal stress criterion to predict delamination. Experimental validation has indicated that the calculated results showed a reasonable agreement with the experimental results on the basis of both delamination factor and thickness, proving the feasibility and the accuracy of the model. This work provides an important reference for selecting and optimizing the drilling parameters to enable delamination-free holes on CFRPs composite.

碳纤维增强塑料 (CFRP) 由于其吸引人的机械和结构特性而被用于许多工业应用。然而，迄今为止，钻孔仍被认为是碳纤维复合材料部件制造/组装中最关键的过程，而分层损坏可被视为钻孔过程中最严重的机加工引起的问题。为了解决这个问题，提出了一种使用带有磨料金刚石孔锯或空心钻的超声波振动辅助钻孔 (UVAD) 的 CFRP 分层预测模型来计算分层因子和厚度。建模开发的方法从简化刀具和CFRPs工件开始，分别计算总切削力和临界推力，并采用最大名义应力准则来预测分层。实验验证表明，计算结果与实验结果在分层因子和厚度的基础上均具有合理的一致性，证明了模型的可行性和准确性。该工作为选择和优化钻孔参数以在CFRPs复合材料上实现无分层钻孔提供了重要参考。