Influence of veil interleave distribution on the delamination resistance of cross-ply CFRP laminates under low velocity impact

被引：16

作者：

Ramji, Amit ^{[1
]}

Xu, Yigeng ^{[1
]}

Yasaee, Mehdi ^{[1
]}

Grasso, Marzio ^{[1
]}

Webb, Philip ^{[1
]}

机构：

[1] Cranfield Univ, Sch Aerosp Transport & Mfg, Cranfield MK43 0AL, Beds, England

来源：

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING | 2021年 / 157卷

关键词：

Carbon fibres; Interleaving; Delamination migration; Impact behaviour; Interfacial strength; Damage tolerance; INTERLAMINAR FRACTURE-TOUGHNESS; MODE-I; THERMOSETTING COMPOSITES; SUBSEQUENT MIGRATION; DAMAGE TOLERANCE; FAILURE; GROWTH; YARN;

D O I：

10.1016/j.ijimpeng.2021.103997

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

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.

引用

页数：10