This paper focuses on the influence of polyphenylene sulfide (PPS) veil distribution within unidirectional carbon fibre reinforced polymer (CFRP) laminates under low velocity impact (LVI). Tests were conducted on a baseline layup of (0/90)_7s, modified with various levels of veil interleaving at the middle or the outer plies. The results demonstrate that veil interleaving can reduce and migrate the damage from predominantly inter-laminar to intra-laminar for veils positioned in the outer plies. The interleaved configurations also display differences in the impact stiffness [1] after the Delamination Threshold Load (DTL), implying the level of damage is lower than those with fewer veils and those positioned at the mid-level neutral plane. Interesting changes in the impact force history are also observed where a smoothing effect around the DTL is achieved through interleaving. Fracture migration effects are also considered and provide a significant insight into the damage characteristics when using CFRP laminates with interleaved PPS veils under LVI.

本文重点研究了低速冲击 (LVI) 下单向碳纤维增强聚合物 (CFRP) 层压板内聚苯硫醚 (PPS) 面纱分布的影响。测试是在 (0/90) _7s的基线上篮下进行的, 在中间或外层用不同层次的面纱交错进行修改。结果表明，对于位于外层中的面纱，面纱交织可以减少和迁移主要从层间到层内的损伤。在分层阈值载荷 (DTL) 之后，交错配置还显示出冲击刚度 [1] 的差异，这意味着损坏程度低于那些具有较少面纱和位于中间水平面的配置。还观察到冲击力历史的有趣变化，其中通过交错实现了围绕 DTL 的平滑效果。在 LVI 下使用具有交错 PPS 面纱的 CFRP 层压板时，还考虑了断裂迁移效应，并提供了对损伤特性的重要洞察。