ON THE MODE-I DELAMINATION TEST AND THE IMPORTANCE OF LAMINATE LAY-UPS

被引:10
作者
BENZEGGAGH, ML [1 ]
GONG, XJ [1 ]
LAKSIMI, A [1 ]
ROELANDT, JM [1 ]
机构
[1] UNIV TECHNOL COMPIEGNE,DIV MODELES NUMER MECAN,CNRS,URA 849,F-60206 COMPIEGNE,FRANCE
关键词
D O I
10.1002/pen.760311709
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The aim of this work has been the study of mode I delamination of multi-ply double cantilever beam specimens of glass fiber/epoxy. The results show an important influence of laminate lay-ups on delamination resistance. The value of G(Ic) at the initiation of delamination varies with laminate curvature coupling K(y)/K(x) and K(xy)/K(x). An empirical model describing this variation has been proposed. In addition, it is seen that the values of G(Ic) at the initiation of delamination and at stable crack growth will be very different. The delamination resistance can be characterized by two constants: G(Ic) corresponds to the initiation of delamination, and G(Ip)s corresponds to the plateau of stable crack propagation. The correlation between experimental measurement and analysis of compliance and energy release rate results reveals significant three-dimensional effects.
引用
收藏
页码:1286 / 1292
页数:7
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