Fatigue delamination behaviour of unidirectional carbon fibre/epoxy laminates reinforced by Z-Fiber® pinning

被引：63
作者：
Cartie, Denis D. R. [1 ]
Laffaille, Jean-Martin [1 ]
Partridge, Ivana K. [1 ]
Brunner, Andreas J. [2 ]
机构：
[1] Cranfield Univ, Sch Appl Sci, Composites Ctr, Cranfield MK43 0AL, Beds, England
[2] Swiss Fed Labs Mat Testing & Res, CH-8600 Dubendorf, Switzerland
来源：
ENGINEERING FRACTURE MECHANICS | 2009年 / 76卷 / 18期
基金：
英国工程与自然科学研究理事会;
关键词：
Composites; Delamination; Fatigue crack growth; Z-Fiber (R) pinning; LOW-VELOCITY IMPACT; FAILURE MECHANISMS; CYCLIC TENSION; JOINTS; PERFORMANCE; COMPOSITES; SIMULATION; DAMAGE;
D O I：
10.1016/j.engfracmech.2009.07.018
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
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.
引用
收藏
页码：2834 / 2845
页数：12
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