On the effects of stitching in CFRPs - I. Mode I delamination toughness

被引：215
|
作者：
Dransfield, KA
Jain, LK
Mai, YW [1 ]
机构：
[1] Univ Sydney, Dept Mech & Mechatron Engn, Ctr Adv Mat Technol, Sydney, NSW 2006, Australia
[2] Cooperat Res Ctr Adv Composite Struct Ltd, Bankstown, NSW 2200, Australia
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 1998年 / 58卷 / 06期
关键词：
textile composites; fracture toughness; delamination; fibre bridging; resin transfer moulding (RTM);
D O I：
10.1016/S0266-3538(97)00229-7
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Stitching advanced carbon-fibre composites in the thought-thickness direction enhances the interlaminar fracture toughness. The mode I delamination roughness of a carbon/epoxy composite, both unstitched and stitched, was experimentally determined by using double-cantilever beam specimens. Specimens with varying stitch density, thread diameter and thread type were studied. The steady-state toughnesses, G(IRs) Of unstitched and stitched specimens have been compared. The addition of stitching was found to create an improvement in toughness of up to 15 times. The energy-dissipating crack propagation processes were determined and critical parameters identified. In addition, experimental results were compared with theoretical predictions from a micromechanics-based model developed previously and good agreement was found. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：815 / 827
页数：13
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