Fatigue delamination behaviour of unidirectional carbon fibre/epoxy laminates reinforced by Z-Fiber® pinning
Fatigue delamination behaviour of unidirectional carbon fibre/epoxy laminates reinforced by Z-Fiber® pinning
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DOI：
10.1016/j.engfracmech.2009.07.018
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发表时间：
2009-12-01
影响因子：
5.4
通讯作者：
Brunner, Andreas J.
中科院分区：
文献类型：
--
作者：
Cartie, Denis D. R.;Laffaille, Jean-Martin;Brunner, Andreas J.
Z-Pin增强碳纤维环氧树脂层压板进行了测试模式I和模式II的条件下，准静态和疲劳。测试程序改编自现有标准或标准前测试。含有2%和4%的碳纤维Z-销（0.28毫米直径）面密度的样品进行了比较与unpinned层压板。在位移控制下的准静态测试产生了显着增加的表观分层阻力。2%针密度的样本在170 N载荷下在模式I中失效，相当于表观G（IC）为2 kJ/m（2）。载荷控制下的疲劳试验表明，全厚度增强的存在减缓了疲劳分层扩展。(C)2009年由Elsevier Ltd.出版
Z-Pin reinforced carbon-fibre epoxy laminates were tested under Mode I and Mode II conditions, both quasi-statically and in fatigue. Test procedures were adapted from existing standard or pre-standard tests. Samples containing 2% and 4% areal densities of carbon-fibre Z-pins (0.28 mm diameter) were compared with unpinned laminates. Quasi-static tests under displacement control yielded a dramatic increase of the apparent delamination resistance. Specimens with 2% pin density failed in Mode I at loads 170 N, equivalent to an apparent G(IC) of 2 kJ/m(2). Fatigue testing under load control showed that the presence of the through-thickness reinforcement slowed down fatigue delamination propagation. (C) 2009 Published by Elsevier Ltd.