A new ENF test specimen for the mode II delamination toughness testing of stitched woven CFRP laminates

被引：22

作者：

Wood, Michael D. K.

Sun, Xiannian

Tong, Liyong ^{[1
]}

Luo, Quantian

Katzos, Anthony

Rispler, Adrian

机构：

[1] Univ S Pacific, Sch Engn & Phys, Suva, Fiji

[2] Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia

[3] Hawker Havilland Ltd, Bankstown, NSW 2000, Australia

来源：

JOURNAL OF COMPOSITE MATERIALS | 2007年 / 41卷 / 14期

关键词：

stitching; ENF; mode II delamination toughness; reinforcing tabs;

D O I：

10.1177/0021998306069890

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

This paper presents an experimental and numerical investigation on the effects of stitching distribution on the interlaminar fracture toughness of carbon fiber reinforced polymers (CFRPs) using an end notch flexure (ENF) specimen. To avoid premature failure in bending, reinforcing tabs were bonded to either side of the ENF specimens to create a tabbed ENF (TENF) specimen. The effect of stitch distribution on mode II delamination toughness is investigated by considering several stitch distribution patterns. The experimental results indicate that the mode II delamination toughness of stitched TENF specimens can be effectively measured and that stitch distribution does not play a significant role in improving the steady-state mode II delamination toughness of stitched CFRPs. Numerical results are also obtained using both MSC/NASTRAN and an in-house software for the tested specimens. A reasonable correlation exists between the numerical and experimental results.

引用

页码：1743 / 1772

页数：30

共 19 条

[1]

[Anonymous], 2001, D552801 ASTM

[2]

*ASTM, 1990, PROT INT FRACT TEST, V2

[3] Analysis of the fracture behaviour of a stitched single-lap joint [J].